Re: September PUG - 'Long Exposure' - is up
Darren, toss in yours and you have my top 5 My number 1 being Jan's - because I just love the scene, mostly... Ken's looked familiar for a good reason :-) Alan - buy the PDML annual and you won't ahve to log on to the web to enjoy it. I wonder of the person who did the 1/2500 shot misunderstood the challenge due to some incorrect translation mechanism on the web.. Thinking of 2500 being a large number and long ,in a way, from left to right. ann p.s. I had written the above and sent it in a more timely fashion - it was the first mail that had the mail delivery failure that day On 9/4/2013 11:11, Darren Addy wrote: I also thought that Thrainn Vigfusson's Strips of Green LEDs was a visual stunner, if unimaginatively named. :) I also especially liked Ken's Heading South and Jan's Midnight at the Pool. On Wed, Sep 4, 2013 at 8:48 AM, Alan C c...@lantic.net wrote: A very interesting gallery with the usual degree of licence. Ken's Heading South (1/15sec @ 600mm) is amazing - with a hand as steady as that, he should consider being a sniper. Darren's Impossible Ride makes my head spin just looking at it. I regained my balance looking at Brian's Full Moon Rising. Alan -Original Message- From: Brian Walters Sent: Wednesday, September 04, 2013 3:19 PM To: Pentax-Discuss Mail List Subject: September PUG - 'Long Exposure' - is up G'day all Another enjoyable gallery with some outstanding work. Thrainn's 'Strips of green LEDS' is probably the most visually stunning and innovative while Rick's 'On Main Street' provides a different take on the theme. As usual, you'll find the gallery here: http://pug.komkon.org/ (you may need to refresh your browser if you see the previous Gallery there). Note: The automated submission process usually works well but it's not infallible. So, if you made a submission and you don't see it in the gallery, let me know. + Coming up for October is 'Animal Kingdom' - cat and cormorant photos permitted... Submit here: http://pug.komkon.org/submit/ Submission Guidelines here: http://pug.komkon.org/general/autosubmit.html The main requirements are: * Max. pixel dimensions: 800 x 800 pixels * Max file size: 300k * Third party equipment is acceptable provided either the camera body or lens used is Pentax. * If you embed a colour space in the image, it should be sRGB to ensure that the image is displayed correctly on line. * Nominal closing date: 30 September. -- Cheers Brian ++ Brian Walters Western Sydney Australia http://lyons-ryan.org/southernlight/ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: September PUG - 'Long Exposure' - is up
On 9/6/2013 12:33 AM, Rob Studdert wrote: On 6 September 2013 05:19, Igor Roshchin s...@komkon.org wrote: I carefully read all 3 responses below, and I think the difference in the definition of what different people mean by HDR. In my view, HDR provides mapping of the large-bit-space (due to the large dynamic range of the scene light) to a smaller-bit-space. What the mapping function, whether it is analytical or not, spatialy uniform or not (i.e. global or local), etc, is a separate question. I'm with Mark, HDR is a digital image file spec, tone-mapping is the process that is applied to HDR image files specifically. Processes to enhance the apparent dynanic range of images has existed since very early in photography, dodge and burn being the most basic form. Cheers, HDR wouldn't give me the black sky I wanted, nor the darkness in the foreground that sets off the control structure. The foliage is bright green the sky is baby blue. I might as well have been shooting at high noon. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: September PUG - 'Long Exposure' - is up
I carefully read all 3 responses below, and I think the difference in the definition of what different people mean by HDR. In my view, HDR provides mapping of the large-bit-space (due to the large dynamic range of the scene light) to a smaller-bit-space. What the mapping function, whether it is analytical or not, spatialy uniform or not (i.e. global or local), etc, is a separate question. When a high-contrast scene is photographed with different exposure times, and then exposure fusion is performed (manually or with a software), what you do, is you take subsets (sub-ranges) of that original large-bit-space (large dynamic range), and capture them separately. Then you combine these sub-ranges into one photo, by some non-analytical, spatially non-uniform mapping function - to a smaller bit-space (dynamic range). The difference from the process performed by the software that has HDR in its title is just that has a well defined, frequently power-law (or more complicated function) type of scaling (dynamic range compression). I should point out that local burning and dodging done in photo-printing is also tone mapping to the paper which is typically a relatively low-dynamic-range media. As a simple reference that describes what I wrote above in somewhat more detail, I'd offer this Wikipedia page: http://en.wikipedia.org/wiki/Tone_mapping Best regards, Igor Wed Sep 4 17:00:38 EDT 2013 Mark Roberts wrote: Igor Roshchin wrote: I have a question for John Sessoms: John, you wrote for your photo: This is not an HDR image. It is a blend of 4 exposures 2 sec to 45 sec using layer masks blend modes. How is it different from HDR? HDR combines images into 32-bit-per-color space and then tone maps the 32-bit image into a viewable 16 or 8-bit image. Wed Sep 4 14:35:16 EDT 2013 Matthew Hunt wrote: I would say that the difference is that in HDR imaging (as the term is generally used) at some point (prior to tone-mapping) you produce a scene-referred high-dynamic-range image. This requires understanding or measuring the quantitative exposure relationship between the input LDR images, allowing the software to know (for example) that a bright point in the HDR image is 1,000,000 times brighter in the original scene than a darker point. What John did is more akin to exposure fusion, as performed by the Enfuse software for example (although it sounds like John blended images manually). In exposure fusion, the pixels in the output image are a weighted average of the pixels in the input image (with weights varying from pixel to pixel), but exposure fusion algorithms don't need to know the quantitative relationships between the exposures... they can just prefer to weight pixels that are well exposed (i.e. near the middle of the LDR exposure range). Wed Sep 4 16:52:16 EDT 2013 John wrote: It's not HDR because I didn't use HDR it's not tone-mapped. There's nothing wrong with HDR per se, I just didn't use it. Mainly, I didn't use HDR because I couldn't get it to do what I wanted it to do in this image, i.e. not look like it was HDR. It does still look kind of HDRish, and to the extent it does, I'm not happy with it. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: September PUG - 'Long Exposure' - is up
On 6 September 2013 05:19, Igor Roshchin s...@komkon.org wrote: I carefully read all 3 responses below, and I think the difference in the definition of what different people mean by HDR. In my view, HDR provides mapping of the large-bit-space (due to the large dynamic range of the scene light) to a smaller-bit-space. What the mapping function, whether it is analytical or not, spatialy uniform or not (i.e. global or local), etc, is a separate question. I'm with Mark, HDR is a digital image file spec, tone-mapping is the process that is applied to HDR image files specifically. Processes to enhance the apparent dynanic range of images has existed since very early in photography, dodge and burn being the most basic form. Cheers, -- Rob Studdert (Digital Image Studio) Tel: +61-418-166-870 UTC +10 Hours Gmail, eBay, Skype, Twitter, Facebook, Picasa: distudio -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
September PUG - 'Long Exposure' - is up
G'day all Another enjoyable gallery with some outstanding work. Thrainn's 'Strips of green LEDS' is probably the most visually stunning and innovative while Rick's 'On Main Street' provides a different take on the theme. As usual, you'll find the gallery here: http://pug.komkon.org/ (you may need to refresh your browser if you see the previous Gallery there). Note: The automated submission process usually works well but it's not infallible. So, if you made a submission and you don't see it in the gallery, let me know. + Coming up for October is 'Animal Kingdom' - cat and cormorant photos permitted... Submit here: http://pug.komkon.org/submit/ Submission Guidelines here: http://pug.komkon.org/general/autosubmit.html The main requirements are: * Max. pixel dimensions: 800 x 800 pixels * Max file size: 300k * Third party equipment is acceptable provided either the camera body or lens used is Pentax. * If you embed a colour space in the image, it should be sRGB to ensure that the image is displayed correctly on line. * Nominal closing date: 30 September. -- Cheers Brian ++ Brian Walters Western Sydney Australia http://lyons-ryan.org/southernlight/ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: September PUG - 'Long Exposure' - is up
I also thought that Thrainn Vigfusson's Strips of Green LEDs was a visual stunner, if unimaginatively named. :) I also especially liked Ken's Heading South and Jan's Midnight at the Pool. On Wed, Sep 4, 2013 at 8:48 AM, Alan C c...@lantic.net wrote: A very interesting gallery with the usual degree of licence. Ken's Heading South (1/15sec @ 600mm) is amazing - with a hand as steady as that, he should consider being a sniper. Darren's Impossible Ride makes my head spin just looking at it. I regained my balance looking at Brian's Full Moon Rising. Alan -Original Message- From: Brian Walters Sent: Wednesday, September 04, 2013 3:19 PM To: Pentax-Discuss Mail List Subject: September PUG - 'Long Exposure' - is up G'day all Another enjoyable gallery with some outstanding work. Thrainn's 'Strips of green LEDS' is probably the most visually stunning and innovative while Rick's 'On Main Street' provides a different take on the theme. As usual, you'll find the gallery here: http://pug.komkon.org/ (you may need to refresh your browser if you see the previous Gallery there). Note: The automated submission process usually works well but it's not infallible. So, if you made a submission and you don't see it in the gallery, let me know. + Coming up for October is 'Animal Kingdom' - cat and cormorant photos permitted... Submit here: http://pug.komkon.org/submit/ Submission Guidelines here: http://pug.komkon.org/general/autosubmit.html The main requirements are: * Max. pixel dimensions: 800 x 800 pixels * Max file size: 300k * Third party equipment is acceptable provided either the camera body or lens used is Pentax. * If you embed a colour space in the image, it should be sRGB to ensure that the image is displayed correctly on line. * Nominal closing date: 30 September. -- Cheers Brian ++ Brian Walters Western Sydney Australia http://lyons-ryan.org/southernlight/ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- Nothing is sure but death and Pentaxes. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: September PUG - 'Long Exposure' - is up
A very interesting gallery with the usual degree of licence. Ken's Heading South (1/15sec @ 600mm) is amazing - with a hand as steady as that, he should consider being a sniper. Darren's Impossible Ride makes my head spin just looking at it. I regained my balance looking at Brian's Full Moon Rising. Alan -Original Message- From: Brian Walters Sent: Wednesday, September 04, 2013 3:19 PM To: Pentax-Discuss Mail List Subject: September PUG - 'Long Exposure' - is up G'day all Another enjoyable gallery with some outstanding work. Thrainn's 'Strips of green LEDS' is probably the most visually stunning and innovative while Rick's 'On Main Street' provides a different take on the theme. As usual, you'll find the gallery here: http://pug.komkon.org/ (you may need to refresh your browser if you see the previous Gallery there). Note: The automated submission process usually works well but it's not infallible. So, if you made a submission and you don't see it in the gallery, let me know. + Coming up for October is 'Animal Kingdom' - cat and cormorant photos permitted... Submit here: http://pug.komkon.org/submit/ Submission Guidelines here: http://pug.komkon.org/general/autosubmit.html The main requirements are: * Max. pixel dimensions: 800 x 800 pixels * Max file size: 300k * Third party equipment is acceptable provided either the camera body or lens used is Pentax. * If you embed a colour space in the image, it should be sRGB to ensure that the image is displayed correctly on line. * Nominal closing date: 30 September. -- Cheers Brian ++ Brian Walters Western Sydney Australia http://lyons-ryan.org/southernlight/ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: September PUG - 'Long Exposure' - is up
No reflection on you Brian, you're work is highly appreciated, but perhaps you should re-institute the open gallery portion of the PUG. I didn't really have a long exposure image I thought was worthy, so I didn't submit anything, but that doesn't seem to have stopped everyone. This one http://pug.komkon.org/13sep/slides/JK-pentaxlongexpo.html violates the basic requirement of this month's theme. It's a pretty picture but it ain't no long exposure, nor is it even a cleaver such as this http://pug.komkon.org/13sep/slides/RW-NewHampshire-8-13-27.html a photograph of the results of long exposure, damn, I wish I'd thought of that. It's a nice gallery though. I'm impressed by all of the images, even the one that doesn't really belong. On 9/4/2013 9:19 AM, Brian Walters wrote: G'day all Another enjoyable gallery with some outstanding work. Thrainn's 'Strips of green LEDS' is probably the most visually stunning and innovative while Rick's 'On Main Street' provides a different take on the theme. As usual, you'll find the gallery here: http://pug.komkon.org/ (you may need to refresh your browser if you see the previous Gallery there). Note: The automated submission process usually works well but it's not infallible. So, if you made a submission and you don't see it in the gallery, let me know. + Coming up for October is 'Animal Kingdom' - cat and cormorant photos permitted... Submit here: http://pug.komkon.org/submit/ Submission Guidelines here: http://pug.komkon.org/general/autosubmit.html The main requirements are: * Max. pixel dimensions: 800 x 800 pixels * Max file size: 300k * Third party equipment is acceptable provided either the camera body or lens used is Pentax. * If you embed a colour space in the image, it should be sRGB to ensure that the image is displayed correctly on line. * Nominal closing date: 30 September. -- A newspaper is a device for making the ignorant more ignorant, and the crazy, crazier. - H.L.Mencken -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: September PUG - 'Long Exposure' - is up
Of course I have no excuse for that first construction, forgetting the word not really screws it up. On 9/4/2013 12:43 PM, aggrivatedathotm...@gmail.com wrote: That should be you are work, it should be your work. Dammed spell checker traditiona On 9/4/2013 9:42 AM, P.J. Alling wrote: No reflection on you Brian, you're work is highly appreciated, but perhaps you should re-institute the open gallery portion of the PUG. I didn't really have a long exposure image I thought was worthy, so I didn't submit anything, but that doesn't seem to have stopped everyone. This one http://pug.komkon.org/13sep/slides/JK-pentaxlongexpo.html violates the basic requirement of this month's theme. It's a pretty picture but it ain't no long exposure, nor is it even a cleaver such as this http://pug.komkon.org/13sep/slides/RW-NewHampshire-8-13-27.html a photograph of the results of long exposure, damn, I wish I'd thought of that. It's a nice gallery though. I'm impressed by all of the images, even the one that doesn't really belong. On 9/4/2013 9:19 AM, Brian Walters wrote: G'day all Another enjoyable gallery with some outstanding work. Thrainn's 'Strips of green LEDS' is probably the most visually stunning and innovative while Rick's 'On Main Street' provides a different take on the theme. As usual, you'll find the gallery here: http://pug.komkon.org/ (you may need to refresh your browser if you see the previous Gallery there). Note: The automated submission process usually works well but it's not infallible. So, if you made a submission and you don't see it in the gallery, let me know. + Coming up for October is 'Animal Kingdom' - cat and cormorant photos permitted... Submit here: http://pug.komkon.org/submit/ Submission Guidelines here: http://pug.komkon.org/general/autosubmit.html The main requirements are: * Max. pixel dimensions: 800 x 800 pixels * Max file size: 300k * Third party equipment is acceptable provided either the camera body or lens used is Pentax. * If you embed a colour space in the image, it should be sRGB to ensure that the image is displayed correctly on line. * Nominal closing date: 30 September. -- A newspaper is a device for making the ignorant more ignorant, and the crazy, crazier. - H.L.Mencken -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: September PUG - 'Long Exposure' - is up
That should be you are work, it should be your work. Dammed spell checker traditiona On 9/4/2013 9:42 AM, P.J. Alling wrote: No reflection on you Brian, you're work is highly appreciated, but perhaps you should re-institute the open gallery portion of the PUG. I didn't really have a long exposure image I thought was worthy, so I didn't submit anything, but that doesn't seem to have stopped everyone. This one http://pug.komkon.org/13sep/slides/JK-pentaxlongexpo.html violates the basic requirement of this month's theme. It's a pretty picture but it ain't no long exposure, nor is it even a cleaver such as this http://pug.komkon.org/13sep/slides/RW-NewHampshire-8-13-27.html a photograph of the results of long exposure, damn, I wish I'd thought of that. It's a nice gallery though. I'm impressed by all of the images, even the one that doesn't really belong. On 9/4/2013 9:19 AM, Brian Walters wrote: G'day all Another enjoyable gallery with some outstanding work. Thrainn's 'Strips of green LEDS' is probably the most visually stunning and innovative while Rick's 'On Main Street' provides a different take on the theme. As usual, you'll find the gallery here: http://pug.komkon.org/ (you may need to refresh your browser if you see the previous Gallery there). Note: The automated submission process usually works well but it's not infallible. So, if you made a submission and you don't see it in the gallery, let me know. + Coming up for October is 'Animal Kingdom' - cat and cormorant photos permitted... Submit here: http://pug.komkon.org/submit/ Submission Guidelines here: http://pug.komkon.org/general/autosubmit.html The main requirements are: * Max. pixel dimensions: 800 x 800 pixels * Max file size: 300k * Third party equipment is acceptable provided either the camera body or lens used is Pentax. * If you embed a colour space in the image, it should be sRGB to ensure that the image is displayed correctly on line. * Nominal closing date: 30 September. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: September PUG - 'Long Exposure' - is up
I have a question for John Sessoms: John, you wrote for your photo: This is not an HDR image. It is a blend of 4 exposures 2 sec to 45 sec using layer masks blend modes. How is it different from HDR? As I understand this description, you used 4 different length exposures and combined them in one images. Just because you were not using a program/module that is called HDR, but rather implemented the same functionality manually, it doesn't change the essence of the process. IMHO, there is nothing wrong with the HDR process itself. What sometimes is wrong (or rather not even wrong, but just not tasteful, which is by itself subjective) is how some people use it. I see that some people run away from labels that developed some stigma, just because of the labels, not because of what is behind them. Unless I misunderstood you, it is a similar situation here. Classic example is that MRI (magnetic resonance imaging) which is based on NMR (nuclear magnetic resonance) does not have the word nuclear in the name, so that people are not afraid to do it. [BTW, it has nothing to do with the context of nuclear reactions, which people are so scared about. Unlike in nuclear reactions, nuclei used in NMR are stable and do not change.] Igor -Original Message- From: Brian Walters Sent: Wednesday, September 04, 2013 3:19 PM To: Pentax-Discuss Mail List Subject: September PUG - 'Long Exposure' - is up G'day all Another enjoyable gallery with some outstanding work. Thrainn's 'Strips of green LEDS' is probably the most visually stunning and innovative while Rick's 'On Main Street' provides a different take on the theme. As usual, you'll find the gallery here: http://pug.komkon.org/ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: September PUG - 'Long Exposure' - is up
On Wed, Sep 4, 2013 at 2:22 PM, Igor Roshchin s...@komkon.org wrote: I have a question for John Sessoms: John, you wrote for your photo: This is not an HDR image. It is a blend of 4 exposures 2 sec to 45 sec using layer masks blend modes. How is it different from HDR? I would say that the difference is that in HDR imaging (as the term is generally used) at some point (prior to tone-mapping) you produce a scene-referred high-dynamic-range image. This requires understanding or measuring the quantitative exposure relationship between the input LDR images, allowing the software to know (for example) that a bright point in the HDR image is 1,000,000 times brighter in the original scene than a darker point. What John did is more akin to exposure fusion, as performed by the Enfuse software for example (although it sounds like John blended images manually). In exposure fusion, the pixels in the output image are a weighted average of the pixels in the input image (with weights varying from pixel to pixel), but exposure fusion algorithms don't need to know the quantitative relationships between the exposures... they can just prefer to weight pixels that are well exposed (i.e. near the middle of the LDR exposure range). -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: September PUG - 'Long Exposure' - is up
How do y'all get the images larger than 800px on the long side? On 9/4/2013 9:19 AM, Brian Walters wrote: G'day all Another enjoyable gallery with some outstanding work. Thrainn's 'Strips of green LEDS' is probably the most visually stunning and innovative while Rick's 'On Main Street' provides a different take on the theme. As usual, you'll find the gallery here: http://pug.komkon.org/ (you may need to refresh your browser if you see the previous Gallery there). Note: The automated submission process usually works well but it's not infallible. So, if you made a submission and you don't see it in the gallery, let me know. + Coming up for October is 'Animal Kingdom' - cat and cormorant photos permitted... Submit here: http://pug.komkon.org/submit/ Submission Guidelines here: http://pug.komkon.org/general/autosubmit.html The main requirements are: * Max. pixel dimensions: 800 x 800 pixels * Max file size: 300k * Third party equipment is acceptable provided either the camera body or lens used is Pentax. * If you embed a colour space in the image, it should be sRGB to ensure that the image is displayed correctly on line. * Nominal closing date: 30 September. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: September PUG - 'Long Exposure' - is up
Great shot, Ken. Paul On Sep 4, 2013, at 3:58 PM, kwal...@peoplepc.com wrote: Thanks Alan, but the only way I shoot the 600 is on a Kirk 'King Cobra' gimbal head atop a sturdy Gitzo tripod, its a great way to negate the weight of the 600 (around 15 lbs.) Kenneth Waller http://www.pentaxphotogallery.com/kennethwaller - Original Message - From: Alan C c...@lantic.net Subject: Re: September PUG - 'Long Exposure' - is up A very interesting gallery with the usual degree of licence. Ken's Heading South (1/15sec @ 600mm) is amazing - with a hand as steady as that, he should consider being a sniper. Darren's Impossible Ride makes my head spin just looking at it. I regained my balance looking at Brian's Full Moon Rising. Alan -Original Message- From: Brian Walters Sent: Wednesday, September 04, 2013 3:19 PM To: Pentax-Discuss Mail List Subject: September PUG - 'Long Exposure' - is up G'day all Another enjoyable gallery with some outstanding work. Thrainn's 'Strips of green LEDS' is probably the most visually stunning and innovative while Rick's 'On Main Street' provides a different take on the theme. As usual, you'll find the gallery here: http://pug.komkon.org/ (you may need to refresh your browser if you see the previous Gallery there). Note: The automated submission process usually works well but it's not infallible. So, if you made a submission and you don't see it in the gallery, let me know. + Coming up for October is 'Animal Kingdom' - cat and cormorant photos permitted... Submit here: http://pug.komkon.org/submit/ Submission Guidelines here: http://pug.komkon.org/general/autosubmit.html The main requirements are: * Max. pixel dimensions: 800 x 800 pixels * Max file size: 300k * Third party equipment is acceptable provided either the camera body or lens used is Pentax. * If you embed a colour space in the image, it should be sRGB to ensure that the image is displayed correctly on line. * Nominal closing date: 30 September. -- Cheers Brian ++ Brian Walters Western Sydney Australia http://lyons-ryan.org/southernlight/ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: September PUG - 'Long Exposure' - is up
Thanks Alan, but the only way I shoot the 600 is on a Kirk 'King Cobra' gimbal head atop a sturdy Gitzo tripod, its a great way to negate the weight of the 600 (around 15 lbs.) Kenneth Waller http://www.pentaxphotogallery.com/kennethwaller - Original Message - From: Alan C c...@lantic.net Subject: Re: September PUG - 'Long Exposure' - is up A very interesting gallery with the usual degree of licence. Ken's Heading South (1/15sec @ 600mm) is amazing - with a hand as steady as that, he should consider being a sniper. Darren's Impossible Ride makes my head spin just looking at it. I regained my balance looking at Brian's Full Moon Rising. Alan -Original Message- From: Brian Walters Sent: Wednesday, September 04, 2013 3:19 PM To: Pentax-Discuss Mail List Subject: September PUG - 'Long Exposure' - is up G'day all Another enjoyable gallery with some outstanding work. Thrainn's 'Strips of green LEDS' is probably the most visually stunning and innovative while Rick's 'On Main Street' provides a different take on the theme. As usual, you'll find the gallery here: http://pug.komkon.org/ (you may need to refresh your browser if you see the previous Gallery there). Note: The automated submission process usually works well but it's not infallible. So, if you made a submission and you don't see it in the gallery, let me know. + Coming up for October is 'Animal Kingdom' - cat and cormorant photos permitted... Submit here: http://pug.komkon.org/submit/ Submission Guidelines here: http://pug.komkon.org/general/autosubmit.html The main requirements are: * Max. pixel dimensions: 800 x 800 pixels * Max file size: 300k * Third party equipment is acceptable provided either the camera body or lens used is Pentax. * If you embed a colour space in the image, it should be sRGB to ensure that the image is displayed correctly on line. * Nominal closing date: 30 September. -- Cheers Brian ++ Brian Walters Western Sydney Australia http://lyons-ryan.org/southernlight/ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: September PUG - 'Long Exposure' - is up
On 9/4/2013 2:35 PM, Matthew Hunt wrote: On Wed, Sep 4, 2013 at 2:22 PM, Igor Roshchin s...@komkon.org wrote: I have a question for John Sessoms: John, you wrote for your photo: This is not an HDR image. It is a blend of 4 exposures 2 sec to 45 sec using layer masks blend modes. How is it different from HDR? I would say that the difference is that in HDR imaging (as the term is generally used) at some point (prior to tone-mapping) you produce a scene-referred high-dynamic-range image. This requires understanding or measuring the quantitative exposure relationship between the input LDR images, allowing the software to know (for example) that a bright point in the HDR image is 1,000,000 times brighter in the original scene than a darker point. What John did is more akin to exposure fusion, as performed by the Enfuse software for example (although it sounds like John blended images manually). In exposure fusion, the pixels in the output image are a weighted average of the pixels in the input image (with weights varying from pixel to pixel), but exposure fusion algorithms don't need to know the quantitative relationships between the exposures... they can just prefer to weight pixels that are well exposed (i.e. near the middle of the LDR exposure range). What I was trying to do was something I could do years ago with Cibachrome, where I could combine two or more slides by making masks. The mask would only allow light from the part of the slide image I wanted in the final print to reach the paper, blocking the rest. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: September PUG - 'Long Exposure' - is up
On 9/4/2013 2:22 PM, Igor Roshchin wrote: I have a question for John Sessoms: John, you wrote for your photo: This is not an HDR image. It is a blend of 4 exposures 2 sec to 45 sec using layer masks blend modes. How is it different from HDR? As I understand this description, you used 4 different length exposures and combined them in one images. Just because you were not using a program/module that is called HDR, but rather implemented the same functionality manually, it doesn't change the essence of the process. It's not HDR because I didn't use HDR it's not tone-mapped. There's nothing wrong with HDR per se, I just didn't use it. Mainly, I didn't use HDR because I couldn't get it to do what I wanted it to do in this image, i.e. not look like it was HDR. It does still look kind of HDRish, and to the extent it does, I'm not happy with it. IMHO, there is nothing wrong with the HDR process itself. What sometimes is wrong (or rather not even wrong, but just not tasteful, which is by itself subjective) is how some people use it. I see that some people run away from labels that developed some stigma, just because of the labels, not because of what is behind them. Unless I misunderstood you, it is a similar situation here. Classic example is that MRI (magnetic resonance imaging) which is based on NMR (nuclear magnetic resonance) does not have the word nuclear in the name, so that people are not afraid to do it. [BTW, it has nothing to do with the context of nuclear reactions, which people are so scared about. Unlike in nuclear reactions, nuclei used in NMR are stable and do not change.] Igor -Original Message- From: Brian Walters Sent: Wednesday, September 04, 2013 3:19 PM To: Pentax-Discuss Mail List Subject: September PUG - 'Long Exposure' - is up G'day all Another enjoyable gallery with some outstanding work. Thrainn's 'Strips of green LEDS' is probably the most visually stunning and innovative while Rick's 'On Main Street' provides a different take on the theme. As usual, you'll find the gallery here: http://pug.komkon.org/ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: September PUG - 'Long Exposure' - is up
Thanks for commenting Darren. Kenneth Waller http://www.pentaxphotogallery.com/kennethwaller - Original Message - From: Darren Addy pixelsmi...@gmail.com Subject: Re: September PUG - 'Long Exposure' - is up I also thought that Thrainn Vigfusson's Strips of Green LEDs was a visual stunner, if unimaginatively named. :) I also especially liked Ken's Heading South and Jan's Midnight at the Pool. On Wed, Sep 4, 2013 at 8:48 AM, Alan C c...@lantic.net wrote: A very interesting gallery with the usual degree of licence. Ken's Heading South (1/15sec @ 600mm) is amazing - with a hand as steady as that, he should consider being a sniper. Darren's Impossible Ride makes my head spin just looking at it. I regained my balance looking at Brian's Full Moon Rising. Alan -Original Message- From: Brian Walters Sent: Wednesday, September 04, 2013 3:19 PM To: Pentax-Discuss Mail List Subject: September PUG - 'Long Exposure' - is up G'day all Another enjoyable gallery with some outstanding work. Thrainn's 'Strips of green LEDS' is probably the most visually stunning and innovative while Rick's 'On Main Street' provides a different take on the theme. As usual, you'll find the gallery here: http://pug.komkon.org/ (you may need to refresh your browser if you see the previous Gallery there). Note: The automated submission process usually works well but it's not infallible. So, if you made a submission and you don't see it in the gallery, let me know. + Coming up for October is 'Animal Kingdom' - cat and cormorant photos permitted... Submit here: http://pug.komkon.org/submit/ Submission Guidelines here: http://pug.komkon.org/general/autosubmit.html The main requirements are: * Max. pixel dimensions: 800 x 800 pixels * Max file size: 300k * Third party equipment is acceptable provided either the camera body or lens used is Pentax. * If you embed a colour space in the image, it should be sRGB to ensure that the image is displayed correctly on line. * Nominal closing date: 30 September. -- Cheers Brian ++ Brian Walters Western Sydney Australia http://lyons-ryan.org/southernlight/ -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- Nothing is sure but death and Pentaxes. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: September PUG - 'Long Exposure' - is up
Igor Roshchin wrote: I have a question for John Sessoms: John, you wrote for your photo: This is not an HDR image. It is a blend of 4 exposures 2 sec to 45 sec using layer masks blend modes. How is it different from HDR? HDR combines images into 32-bit-per-color space and then tone maps the 32-bit image into a viewable 16 or 8-bit image. -- Mark Roberts - Photography Multimedia www.robertstech.com -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: September PUG - 'Long Exposure' - is up
Quoting P.J. Alling webstertwenty...@gmail.com: No reflection on you Brian, you're work is highly appreciated, but perhaps you should re-institute the open gallery portion of the PUG. I didn't really have a long exposure image I thought was worthy, so I didn't submit anything, but that doesn't seem to have stopped everyone. This one http://pug.komkon.org/13sep/slides/JK-pentaxlongexpo.html violates the basic requirement of this month's theme. It's a pretty picture but it ain't no long exposure, Yeah. Of course it's not my role to decline to accept images unless they violate the rules. Whether an image conforms to the theme is a matter for the photographer but, if I had taken more notice of the Exif, I probably would have questioned this particular one. As for the monthly Open Gallery, the problem is that it wasn't being supported. Over the past couple of years, the number of Open Gallery submissions rarely exceeded two, and more often it was one or none. I think most people just prefer to submit non-themed images as PESOs. Including the monthly Open Gallery complicates the gallery generation process - not insurmountably, but enough to be tedious for so few submissions. However, I'm intending to include an Open Gallery as one of the themes for 2014. Cheers Brian ++ Brian Walters Western Sydney Australia http://lyons-ryan.org/southernlight/ nor is it even a cleaver such as this http://pug.komkon.org/13sep/slides/RW-NewHampshire-8-13-27.html a photograph of the results of long exposure, damn, I wish I'd thought of that. It's a nice gallery though. I'm impressed by all of the images, even the one that doesn't really belong. On 9/4/2013 9:19 AM, Brian Walters wrote: G'day all Another enjoyable gallery with some outstanding work. Thrainn's 'Strips of green LEDS' is probably the most visually stunning and innovative while Rick's 'On Main Street' provides a different take on the theme. As usual, you'll find the gallery here: http://pug.komkon.org/ (you may need to refresh your browser if you see the previous Gallery there). Note: The automated submission process usually works well but it's not infallible. So, if you made a submission and you don't see it in the gallery, let me know. + Coming up for October is 'Animal Kingdom' - cat and cormorant photos permitted... Submit here: http://pug.komkon.org/submit/ Submission Guidelines here: http://pug.komkon.org/general/autosubmit.html The main requirements are: * Max. pixel dimensions: 800 x 800 pixels * Max file size: 300k * Third party equipment is acceptable provided either the camera body or lens used is Pentax. * If you embed a colour space in the image, it should be sRGB to ensure that the image is displayed correctly on line. * Nominal closing date: 30 September. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
