Re: Testing K-r with Infrared.
On Fri, May 6, 2011 at 2:01 PM, Timber tim...@clancode.hu wrote: Anyone tried IR photography with the K-5 / K-7 / K-x? No, but i had very good success with my istD. Mid range ISO settings and short shutters settings. Sometimes i think i should have kept mine, but i may steal my sisters from here, she migrated to a Canon after suffering from the istD lock up problems. My second place photo in the 2006 GFM, NPW was shot with the istD and Hoya R72 filter. Dave Regards, .timber -- 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. -- Documenting Life in Rural Ontario. www.caughtinmotion.com http://brooksinthecountry.blogspot.com/ York Region, Ontario, Canada -- 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: Testing K-r with Infrared.
What kind of modification will you do? Full spectrum or dedicated to IR? And how's the modded K10D serving you? Did you find any difficulties or disadvantages? Internal filters are reducing hotspot if I am correct, but what happens if you have a 1000nm filter on the lens and the 720nm internal filter? Does it still eliminates the hotspot? Sorry for having loads of questions but IR photography is something really interests me :) Unfortunately I only have one K-r and I want to keep the possibility to make normal pictures as well so with that I will go for clear glass filter. But I also have a K10D so that might be a dedicated IR machine as it has no Live View so composition would be only possible with hotshoe mounted Russian Turret Finder for RF cameras :) Cheers, .t On Fri, 2011-05-06 at 23:43 +0300, Krisjanis Linkevics wrote: Anyone tried IR photography with the K-5 / K-7 / K-x? Regards, .timber Nop, only a 720nm modified K10D. But if some cash falls on my head and its not enough for a 645D I will probably buy another K-5 and have it modified. kris -- 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: Testing K-r with Infrared.
It's a very nice image. On Fri, May 6, 2011 at 2:01 PM, Timber tim...@clancode.hu wrote: Hi, I just made a little test the other day, an unmodified (yet) Pentax K-r and the infrared photography. What I've found is the K-r has very strong IR filter (about 20EV) so both high iso handheld and composing the picture with Live View is impossible. Also using 'False color' IR filters, such as the Hoya R72 is out of question as the amount of visible red light will be too much. So the only option to try IR photography with the K-r was the B+W 093 (830nm) filter, which normally let's only the IR light go trough with a very very small amount of visible red. Well with the K-r that very very small amount becomes quite more so the 093 on the K-r acts as the R72 on a modded camera. I can't wait to get my hands on a 1000nm filter :) Usually with bright sunlight 30 seconds, f4 at ISO 400 did the trick and the worst case scenario is cloudy sky where ISO 1600 is needed. Normally ISO 1600 is not noisy but together with long exposure, the noise (which in case of Pentax it's more like a fine grain) is becoming visible. A few pictures can be found on my flickr stream ( http://www.flickr.com/photos/timbah/5693966320/ ) if you want to see the results. Anyone tried IR photography with the K-5 / K-7 / K-x? Regards, .timber -- 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. -- Steve Desjardins -- 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.
Testing K-r with Infrared.
Hi, I just made a little test the other day, an unmodified (yet) Pentax K-r and the infrared photography. What I've found is the K-r has very strong IR filter (about 20EV) so both high iso handheld and composing the picture with Live View is impossible. Also using 'False color' IR filters, such as the Hoya R72 is out of question as the amount of visible red light will be too much. So the only option to try IR photography with the K-r was the B+W 093 (830nm) filter, which normally let's only the IR light go trough with a very very small amount of visible red. Well with the K-r that very very small amount becomes quite more so the 093 on the K-r acts as the R72 on a modded camera. I can't wait to get my hands on a 1000nm filter :) Usually with bright sunlight 30 seconds, f4 at ISO 400 did the trick and the worst case scenario is cloudy sky where ISO 1600 is needed. Normally ISO 1600 is not noisy but together with long exposure, the noise (which in case of Pentax it's more like a fine grain) is becoming visible. A few pictures can be found on my flickr stream ( http://www.flickr.com/photos/timbah/5693966320/ ) if you want to see the results. Anyone tried IR photography with the K-5 / K-7 / K-x? Regards, .timber -- 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: Testing K-r with Infrared.
Anyone tried IR photography with the K-5 / K-7 / K-x? Regards, .timber Nop, only a 720nm modified K10D. But if some cash falls on my head and its not enough for a 645D I will probably buy another K-5 and have it modified. kris -- 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: Testing K-r with Infrared.
On May 6, 2011, at 11:01 AM, Timber wrote: A few pictures can be found on my flickr stream ( http://www.flickr.com/photos/timbah/5693966320/ ) if you want to see the results. Very cool. Anyone tried IR photography with the K-5 / K-7 / K-x? No, but I used to put an IR filter over my flash when shooting with my K100. I found that I needed to use two speedlights to get enough IR through the filter to work. -- Larry Colen l...@red4est.com sent from i4est -- 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: Testing K-r with Infrared.
Those are really nice, whether true IR or not. Rick http://photo.net/photos/RickW --- On Fri, 5/6/11, Timber tim...@clancode.hu wrote: From: Timber tim...@clancode.hu Subject: Testing K-r with Infrared. To: pdml@pdml.net Date: Friday, May 6, 2011, 2:01 PM Hi, I just made a little test the other day, an unmodified (yet) Pentax K-r and the infrared photography. What I've found is the K-r has very strong IR filter (about 20EV) so both high iso handheld and composing the picture with Live View is impossible. Also using 'False color' IR filters, such as the Hoya R72 is out of question as the amount of visible red light will be too much. So the only option to try IR photography with the K-r was the B+W 093 (830nm) filter, which normally let's only the IR light go trough with a very very small amount of visible red. Well with the K-r that very very small amount becomes quite more so the 093 on the K-r acts as the R72 on a modded camera. I can't wait to get my hands on a 1000nm filter :) Usually with bright sunlight 30 seconds, f4 at ISO 400 did the trick and the worst case scenario is cloudy sky where ISO 1600 is needed. Normally ISO 1600 is not noisy but together with long exposure, the noise (which in case of Pentax it's more like a fine grain) is becoming visible. A few pictures can be found on my flickr stream ( http://www.flickr.com/photos/timbah/5693966320/ ) if you want to see the results. Anyone tried IR photography with the K-5 / K-7 / K-x? Regards, .timber -- 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.
