Comments for Stephan's Blog http://glubsch.wordpress.com Stock Photography Thu, 03 Sep 2009 20:57:43 +0000 http://wordpress.com/ hourly 1 Comment on EOS 5D Mark II Noise Behavior by Bill Bartmann http://glubsch.wordpress.com/2008/11/26/eos-5d-mark-ii-noise-behavior/#comment-42 Bill Bartmann Thu, 03 Sep 2009 20:57:43 +0000 http://glubsch.wordpress.com/?p=9#comment-42 Cool site, love the info. Cool site, love the info.

]]> Comment on EOS 5D Mark II Noise Behavior by Canon EOS Rebel K2 35mm http://glubsch.wordpress.com/2008/11/26/eos-5d-mark-ii-noise-behavior/#comment-35 Canon EOS Rebel K2 35mm Sun, 01 Mar 2009 19:51:08 +0000 http://glubsch.wordpress.com/?p=9#comment-35 This is quite helpful to people like me. Thanks for taking the time to share. This is quite helpful to people like me. Thanks for taking the time to share.

]]> Comment on EOS 5D Mark II Noise Behavior by Michael http://glubsch.wordpress.com/2008/11/26/eos-5d-mark-ii-noise-behavior/#comment-34 Michael Mon, 26 Jan 2009 17:56:37 +0000 http://glubsch.wordpress.com/?p=9#comment-34 The Audio syncs OK to the video created by the 5d MkII - Ij ust doesn't sync to any of the other equipment. The Audio syncs OK to the video created by the 5d MkII – Ij ust doesn’t sync to any of the other equipment.

]]> Comment on EOS 5D Mark II Noise Behavior by glubsch http://glubsch.wordpress.com/2008/11/26/eos-5d-mark-ii-noise-behavior/#comment-33 glubsch Mon, 26 Jan 2009 17:51:27 +0000 http://glubsch.wordpress.com/?p=9#comment-33 I didn't experience a problem with audio being out of sync with video despite having filmed for more than 3 mins. but now that you mention it, I will pay more attention. It's a silly answer to give that there's not much to be expected from video. If it's part of the camera, it should work. Otherwise, what's the use? I didn’t experience a problem with audio being out of sync with video despite having filmed for more than 3 mins. but now that you mention it, I will pay more attention. It’s a silly answer to give that there’s not much to be expected from video. If it’s part of the camera, it should work. Otherwise, what’s the use?

]]> Comment on EOS 5D Mark II Noise Behavior by Michael http://glubsch.wordpress.com/2008/11/26/eos-5d-mark-ii-noise-behavior/#comment-32 Michael Mon, 26 Jan 2009 17:31:21 +0000 http://glubsch.wordpress.com/?p=9#comment-32 Here's the Canon EOS 5D audio sync issue or problem. Last Wednesday I used my two 5D MkII's in a 3 camera music video shoot. The third camera was a Sony PMW-EX1. Audio was recorded on two additional devices. One audio recording device was an Edirol R4 Pro. The other audio recording setup was a Tascam USB Interface to a MacBook Pro. The Sony Camera, Edirol, and Tascam/MacBook Pro devices all synced sound perfectly over the full duration of the shoot (just over 20 minutes). To clarify - once the different sources are sync'd quickly and easily to the slate clap on the waveform at the beginning of the shoot they all stayed perfectly in sync for the rest of the video. Both Canon cameras audio and video sync'd perfectly to each other but drifted significantly from the other 3 devices even over a 3 minute segment. The is a very serious problem for me and one that introduces significant post-production trouble and expense. This issue was so unexpected (I haven't run into this in years of working with a range of equipment) that I performed 3 subsequent tests to confirm that the 5D MkII's run too fast. The results from the tests show both of my 5D Mark II run about 14 frames too fast in 10 minutes. Audio that is 1 full frame out of sync is noticeable on sharp sounds causing an echo. Audio that is 2 or 3 frames out of sync causes echo on any sound and looks odd in terms of lip sync. That the two Canon cameras audio sync'd OK to each other tells me that the cameras can be calibrated to a standard. Evidently they are just calibrated to an incorrect standard. Anybody else experience this? Does anybody really know if this is likely a chip issue or a firmware issue? Does anyone know an easy reliable way to get the clips to conform to the standard without time-consuming constant tweaking? I contacted Canon tech support and the girl there couldn't care less. She said: There is no fix and that the 5d isn't really a video camera so what did I expect? Nice! Here’s the Canon EOS 5D audio sync issue or problem.

Last Wednesday I used my two 5D MkII’s in a 3 camera music video shoot. The third camera was a Sony PMW-EX1. Audio was recorded on two additional devices. One audio recording device was an Edirol R4 Pro. The other audio recording setup was a Tascam USB Interface to a MacBook Pro.

The Sony Camera, Edirol, and Tascam/MacBook Pro devices all synced sound perfectly over the full duration of the shoot (just over 20 minutes). To clarify – once the different sources are sync’d quickly and easily to the slate clap on the waveform at the beginning of the shoot they all stayed perfectly in sync for the rest of the video.

Both Canon cameras audio and video sync’d perfectly to each other but drifted significantly from the other 3 devices even over a 3 minute segment. The is a very serious problem for me and one that introduces significant post-production trouble and expense.

This issue was so unexpected (I haven’t run into this in years of working with a range of equipment) that I performed 3 subsequent tests to confirm that the 5D MkII’s run too fast. The results from the tests show both of my 5D Mark II run about 14 frames too fast in 10 minutes. Audio that is 1 full frame out of sync is noticeable on sharp sounds causing an echo. Audio that is 2 or 3 frames out of sync causes echo on any sound and looks odd in terms of lip sync.

That the two Canon cameras audio sync’d OK to each other tells me that the cameras can be calibrated to a standard. Evidently they are just calibrated to an incorrect standard.

Anybody else experience this? Does anybody really know if this is likely a chip issue or a firmware issue? Does anyone know an easy reliable way to get the clips to conform to the standard without time-consuming constant tweaking?

I contacted Canon tech support and the girl there couldn’t care less. She said: There is no fix and that the 5d isn’t really a video camera so what did I expect? Nice!

]]> Comment on EOS 5D Mark II: The ‘Black Dot’ Phenomenon by Mike Louw http://glubsch.wordpress.com/2008/12/07/eos-5d-mark-ii-the-black-dot-phenomenon/#comment-30 Mike Louw Sat, 10 Jan 2009 01:08:12 +0000 http://glubsch.wordpress.com/?p=168#comment-30 Yes, the 1.0.7 firmware appears to have done the trick, at least as far as I can see with a few quick real-world test shots. A relief indeed for cityscape and astrophotographers at least! Yes, the 1.0.7 firmware appears to have done the trick, at least as far as I can see with a few quick real-world test shots. A relief indeed for cityscape and astrophotographers at least!

]]> Comment on EOS 5D Mark II: The ‘Black Dot’ Phenomenon by Terry http://glubsch.wordpress.com/2008/12/07/eos-5d-mark-ii-the-black-dot-phenomenon/#comment-29 Terry Thu, 08 Jan 2009 09:42:02 +0000 http://glubsch.wordpress.com/?p=168#comment-29 issue solved! The new firmware Update fixed this problem. http://www.andrewyip.com/blog/2009/01/07/firmware-update-fixes-5d-mark-ii-black-dots-problem issue solved! The new firmware Update fixed this problem.

http://www.andrewyip.com/blog/2009/01/07/firmware-update-fixes-5d-mark-ii-black-dots-problem

]]> Comment on EOS 5D Mark II: The ‘Black Dot’ Phenomenon by Canon acknowledges, doesn’t fix black dot and band problems on 5D Mark II — RSS z Zabawkami http://glubsch.wordpress.com/2008/12/07/eos-5d-mark-ii-the-black-dot-phenomenon/#comment-18 Canon acknowledges, doesn’t fix black dot and band problems on 5D Mark II — RSS z Zabawkami Fri, 19 Dec 2008 15:00:08 +0000 http://glubsch.wordpress.com/?p=168#comment-18 [...] [Via Digital Photography Review, image courtesy of Stephan Hörold] [...] [...] [Via Digital Photography Review, image courtesy of Stephan Hörold] [...]

]]> Comment on EOS 5D Mark II: The ‘Black Dot’ Phenomenon by Ariel Bravy http://glubsch.wordpress.com/2008/12/07/eos-5d-mark-ii-the-black-dot-phenomenon/#comment-17 Ariel Bravy Thu, 18 Dec 2008 21:06:26 +0000 http://glubsch.wordpress.com/?p=168#comment-17 It looks like disabling highlight tone priority, lighting optimizer, and noise reduction fixes the black dot problem for now. http://www.fredmiranda.com/forum/topic/715521/0 Must be a software thing give that it doesn't apply in all situations. With that, it sounds like Canon is about to release a firmware update to cover this issue. http://www.robgalbraith.com/bins/content_page.asp?cid=7-9319-9812 It looks like disabling highlight tone priority, lighting optimizer, and noise reduction fixes the black dot problem for now.

http://www.fredmiranda.com/forum/topic/715521/0

Must be a software thing give that it doesn’t apply in all situations. With that, it sounds like Canon is about to release a firmware update to cover this issue.

http://www.robgalbraith.com/bins/content_page.asp?cid=7-9319-9812

]]> Comment on EOS 5D Mark II: The ‘Black Dot’ Phenomenon by John Mann http://glubsch.wordpress.com/2008/12/07/eos-5d-mark-ii-the-black-dot-phenomenon/#comment-16 John Mann Tue, 16 Dec 2008 04:04:02 +0000 http://glubsch.wordpress.com/?p=168#comment-16 Hi. The fact that these black dots get worse with higher ISO indicates to me that it's a problem with saturation of the analog amplifier that sees the charge from the photodiodes first. Higher ISO, is, I think, cranking up the gain of this amplifier. Analog amplifiers, when they saturate, like from dealing with the previous blown out pixels, take a while to recover and will give very wrong outputs until they do. So, I think, the analog amplifier reading out the blown-out pixels saturates at maximum output level, but does not recover before seeing the charge from the adjacent pixels as the the pixels' charges are fed at a fixed rate to the analog amplifier. Hi. The fact that these black dots get worse with higher ISO indicates to me that it’s a problem with saturation of the analog amplifier that sees the charge from the photodiodes first. Higher ISO, is, I think, cranking up the gain of this amplifier. Analog amplifiers, when they saturate, like from dealing with the previous blown out pixels, take a while to recover and will give very wrong outputs until they do. So, I think, the analog amplifier reading out the blown-out pixels saturates at maximum output level, but does not recover before seeing the charge from the adjacent pixels as the the pixels’ charges are fed at a fixed rate to the analog amplifier.

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