RE: Blue Channel Noise
Doesn't that somehow just ask for a specific noise profile for the K10D for the noise reduction software or are you profiling each image or just use the defaults on the blue channel? greetings Markus -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Bruce Dayton Sent: Thursday, January 04, 2007 5:59 AM To: Pentax-Discuss Mail List Subject: Re: Blue Channel Noise I saw some blue channel noise when I shot at 1600 ISO and underexposed too much. It seemed less forgiving than the *istD for that situation. -- Best regards, Bruce Wednesday, January 3, 2007, 7:29:28 PM, you wrote: PS I've only been able to generate noise when I underexpose by a stop or PS so at high ISO with longish exposures. PS Paul PS On Jan 3, 2007, at 5:39 PM, Godfrey DiGiorgi wrote: No, not me. I haven't found much noise as yet. My longest exposures tend to be in the .5 to 1 second range so far. Godfrey On Jan 3, 2007, at 8:14 AM, David Savage wrote: From John Celio http://www.mail-archive.com/pdml%40pdml.net/msg369265.html Godfrey (I think) posted something a few weeks back as well, but I can't find it. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.432 / Virus Database: 268.16.3/614 - Release Date: 02.01.2007 14:58 -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Blue Channel Noise
I find that the D is also quite noisy when underexposed at high ISO. Perhaps somewhat less, but I can't say for sure without testing. It's close. Paul On Jan 3, 2007, at 11:59 PM, Bruce Dayton wrote: I saw some blue channel noise when I shot at 1600 ISO and underexposed too much. It seemed less forgiving than the *istD for that situation. -- Best regards, Bruce Wednesday, January 3, 2007, 7:29:28 PM, you wrote: PS I've only been able to generate noise when I underexpose by a stop or PS so at high ISO with longish exposures. PS Paul PS On Jan 3, 2007, at 5:39 PM, Godfrey DiGiorgi wrote: No, not me. I haven't found much noise as yet. My longest exposures tend to be in the .5 to 1 second range so far. Godfrey On Jan 3, 2007, at 8:14 AM, David Savage wrote: From John Celio http://www.mail-archive.com/pdml%40pdml.net/msg369265.html Godfrey (I think) posted something a few weeks back as well, but I can't find it. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Blue Channel Noise
Hi, Recently someone posted some examples of blue channel noise experienced with the K10D. I can't find that message or the thread. Would someone be kind enough repost the original message, or provide a pointer to it in the archive. Thanks from cold and foggy Kensington, CA. Shel -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Blue Channel Noise
From John Celio: http://www.mail-archive.com/pdml%40pdml.net/msg369265.html Godfrey (I think) posted something a few weeks back as well, but I can't find it. Cheers, Dave On 1/4/07, Shel Belinkoff [EMAIL PROTECTED] wrote: Hi, Recently someone posted some examples of blue channel noise experienced with the K10D. I can't find that message or the thread. Would someone be kind enough repost the original message, or provide a pointer to it in the archive. Thanks from cold and foggy Kensington, CA. Shel -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Blue Channel Noise
Thanks Dave - that was the message I recall. Shel [Original Message] From: David Savage From John Celio: http://www.mail-archive.com/pdml%40pdml.net/msg369265.html Godfrey (I think) posted something a few weeks back as well, but I can't find it. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Blue Channel Noise
No, not me. I haven't found much noise as yet. My longest exposures tend to be in the .5 to 1 second range so far. Godfrey On Jan 3, 2007, at 8:14 AM, David Savage wrote: From John Celio http://www.mail-archive.com/pdml%40pdml.net/msg369265.html Godfrey (I think) posted something a few weeks back as well, but I can't find it. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Blue Channel Noise
No, not me. I haven't found much noise as yet. My longest exposures tend to be in the .5 to 1 second range so far. Perhaps someone could try a longer exposure, if you have a spare moment? I'd really like to see if this issue is common or not. Thanks. John -- http://www.neovenator.com http://www.cafepress.com/neovenatorphoto -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Blue Channel Noise
- Original Message - From: John Celio Subject: Re: Blue Channel Noise No, not me. I haven't found much noise as yet. My longest exposures tend to be in the .5 to 1 second range so far. Perhaps someone could try a longer exposure, if you have a spare moment? I'd really like to see if this issue is common or not. I noticed a lot of noise and banding in my moon shots from last night, and I wasn't shooting long exposures, but I did have the ISO bumped to 400. When I dropped the ISO back to 100 the problem went away. William Robb -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Blue Channel Noise
I've only been able to generate noise when I underexpose by a stop or so at high ISO with longish exposures. Paul On Jan 3, 2007, at 5:39 PM, Godfrey DiGiorgi wrote: No, not me. I haven't found much noise as yet. My longest exposures tend to be in the .5 to 1 second range so far. Godfrey On Jan 3, 2007, at 8:14 AM, David Savage wrote: From John Celio http://www.mail-archive.com/pdml%40pdml.net/msg369265.html Godfrey (I think) posted something a few weeks back as well, but I can't find it. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Blue Channel Noise
I saw some blue channel noise when I shot at 1600 ISO and underexposed too much. It seemed less forgiving than the *istD for that situation. -- Best regards, Bruce Wednesday, January 3, 2007, 7:29:28 PM, you wrote: PS I've only been able to generate noise when I underexpose by a stop or PS so at high ISO with longish exposures. PS Paul PS On Jan 3, 2007, at 5:39 PM, Godfrey DiGiorgi wrote: No, not me. I haven't found much noise as yet. My longest exposures tend to be in the .5 to 1 second range so far. Godfrey On Jan 3, 2007, at 8:14 AM, David Savage wrote: From John Celio http://www.mail-archive.com/pdml%40pdml.net/msg369265.html Godfrey (I think) posted something a few weeks back as well, but I can't find it. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Noisy New Year (blue channel noise issue)
AFAIK Pentax is aware and should introduce a fix (complete fix or not I don't know). 2007/1/2, William Robb [EMAIL PROTECTED]: - Original Message - From: John Celio Subject: Noisy New Year (blue channel noise issue) Welcome to 2007! *sigh* I hate to give fuel to the doomsayers and eternal pessimists (read: the seeming majority of DPReview's forum users and a few guys here), but I think there's a problem with my K10D. I never saw long-exposure noise like this in my *istD. Here are three versions of the same two-photo (10-second exposures) stitch. Granted, they're reduced in size and compressed, but if you look at them in photoshop or a browser with a non-white background, you'll see what I'm talking about. Full color: http://www.neovenator.com/special/new_year_pano_color.jpg Red channel: http://www.neovenator.com/special/new_year_pano_red_channel.jpg - very low noise, and the green channel is similar Blue channel: http://www.neovenator.com/special/new_year_pano_blue_channel.jpg - it's so noisy, it looks like a photo in a newspaper printed with rollers that were covered in dirt. Look at those streaks! It's horrible! Here's the right frame, which you can take into photoshop and see the channels first-hand: http://www.neovenator.com/special/new_year_pano_frame.jpg This is incredibly frustrating. It's a good thing I wasn't able to make my big nighttime pano this year, because the noise would be driving me insane. My question is, should I wait for Pentax to release a firmware update and see if that solves the problem, or call up Pentax this week and bug them about it? Also, what's a good phone number for reaching Pentax (US)? I've noticed that complaints of excessive noise seem to be cropping up when exposure times hit the several second range. I suspect that it is a sensor problem and that we are stuck with it. I applied some pretty heavy noise reduction to the blue channel of the image you posted, and thought it was much improved for it. William Robb -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net -- Thibault Massart aka Thibouille -- *ist-D,Z1,SuperA,KX,MX, P30t and KR-10x ;) ... -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Noisy New Year (blue channel noise issue)
Welcome to 2007! *sigh* I hate to give fuel to the doomsayers and eternal pessimists (read: the seeming majority of DPReview's forum users and a few guys here), but I think there's a problem with my K10D. I never saw long-exposure noise like this in my *istD. Here are three versions of the same two-photo (10-second exposures) stitch. Granted, they're reduced in size and compressed, but if you look at them in photoshop or a browser with a non-white background, you'll see what I'm talking about. Full color: http://www.neovenator.com/special/new_year_pano_color.jpg Red channel: http://www.neovenator.com/special/new_year_pano_red_channel.jpg - very low noise, and the green channel is similar Blue channel: http://www.neovenator.com/special/new_year_pano_blue_channel.jpg - it's so noisy, it looks like a photo in a newspaper printed with rollers that were covered in dirt. Look at those streaks! It's horrible! Here's the right frame, which you can take into photoshop and see the channels first-hand: http://www.neovenator.com/special/new_year_pano_frame.jpg This is incredibly frustrating. It's a good thing I wasn't able to make my big nighttime pano this year, because the noise would be driving me insane. My question is, should I wait for Pentax to release a firmware update and see if that solves the problem, or call up Pentax this week and bug them about it? Also, what's a good phone number for reaching Pentax (US)? Thanks, John -- http://www.neovenator.com http://www.cafepress.com/neovenatorphoto -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Noisy New Year (blue channel noise issue)
I have to agree the noise in the blue channel is bloody awful. I haven't done any night shooting with the K10D yet, but going by the pictures I made at the family Christmas dinner, all of which required suppression of the blue channel noise (using the reduce noise filter in PS CS2). Admittedly I was shooting at ISO 1600, but even still, the D was never that bad. I hope it can be fixed via a firmware update. Dave (fingers crossed) On 1/2/07, John Celio [EMAIL PROTECTED] wrote: Welcome to 2007! *sigh* I hate to give fuel to the doomsayers and eternal pessimists (read: the seeming majority of DPReview's forum users and a few guys here), but I think there's a problem with my K10D. I never saw long-exposure noise like this in my *istD. Here are three versions of the same two-photo (10-second exposures) stitch. Granted, they're reduced in size and compressed, but if you look at them in photoshop or a browser with a non-white background, you'll see what I'm talking about. Full color: http://www.neovenator.com/special/new_year_pano_color.jpg Red channel: http://www.neovenator.com/special/new_year_pano_red_channel.jpg - very low noise, and the green channel is similar Blue channel: http://www.neovenator.com/special/new_year_pano_blue_channel.jpg - it's so noisy, it looks like a photo in a newspaper printed with rollers that were covered in dirt. Look at those streaks! It's horrible! Here's the right frame, which you can take into photoshop and see the channels first-hand: http://www.neovenator.com/special/new_year_pano_frame.jpg This is incredibly frustrating. It's a good thing I wasn't able to make my big nighttime pano this year, because the noise would be driving me insane. My question is, should I wait for Pentax to release a firmware update and see if that solves the problem, or call up Pentax this week and bug them about it? Also, what's a good phone number for reaching Pentax (US)? -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
Re: Noisy New Year (blue channel noise issue)
- Original Message - From: John Celio Subject: Noisy New Year (blue channel noise issue) Welcome to 2007! *sigh* I hate to give fuel to the doomsayers and eternal pessimists (read: the seeming majority of DPReview's forum users and a few guys here), but I think there's a problem with my K10D. I never saw long-exposure noise like this in my *istD. Here are three versions of the same two-photo (10-second exposures) stitch. Granted, they're reduced in size and compressed, but if you look at them in photoshop or a browser with a non-white background, you'll see what I'm talking about. Full color: http://www.neovenator.com/special/new_year_pano_color.jpg Red channel: http://www.neovenator.com/special/new_year_pano_red_channel.jpg - very low noise, and the green channel is similar Blue channel: http://www.neovenator.com/special/new_year_pano_blue_channel.jpg - it's so noisy, it looks like a photo in a newspaper printed with rollers that were covered in dirt. Look at those streaks! It's horrible! Here's the right frame, which you can take into photoshop and see the channels first-hand: http://www.neovenator.com/special/new_year_pano_frame.jpg This is incredibly frustrating. It's a good thing I wasn't able to make my big nighttime pano this year, because the noise would be driving me insane. My question is, should I wait for Pentax to release a firmware update and see if that solves the problem, or call up Pentax this week and bug them about it? Also, what's a good phone number for reaching Pentax (US)? I've noticed that complaints of excessive noise seem to be cropping up when exposure times hit the several second range. I suspect that it is a sensor problem and that we are stuck with it. I applied some pretty heavy noise reduction to the blue channel of the image you posted, and thought it was much improved for it. William Robb -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
