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FORUMS Canon Cameras, Lenses & Accessories Canon G-series Digital Cameras 
Thread started 31 May 2008 (Saturday) 00:37
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G9 - ISO3200 & continuous shooting mode = 3,8 frames/sec

 
Piet
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May 31, 2008 00:37 |  #1

I was just playing with the settings of my G9 and to my surprise, shooting in the scene mode ISO3200 with continuous shooting mode gives me about 3,8 frames/sec, which is more than double of the 1,5 frames/sec, which i thought is the max. value of the G9. :eek:
Can anyone confirm this behavior and perhaps explain it from a technical point of view? It has nothing to do with the low resolution of 1600x1200 in ISO3200 mode, as the same settings in P-mode stuck the G9 at the regular 1,5 frames/sec.

And of course i don't what to discuss if this combination makes sense or is of any use, i'm just tinking about the reason why... :confused:


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Piet

  
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Aweitzel
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May 31, 2008 08:22 |  #2

Lol, i cant get to technical with you, seeing as im not technical at all. I just pulled out my cam, and tried it. Are you using the AF mode? There is huge Differnce in speed if AF is on.My only guess is at 3200 Iso, the shutter is faster... Then agian that is only a guess.


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Piet
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May 31, 2008 08:57 |  #3

Aweitzel wrote in post #5630272 (external link)
Lol, i cant get to technical with you, seeing as im not technical at all. I just pulled out my cam, and tried it. Are you using the AF mode? There is huge Differnce in speed if AF is on.My only guess is at 3200 Iso, the shutter is faster... Then agian that is only a guess.

I've tested just continuous mode, without AF.


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Piet

  
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Jannie
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May 31, 2008 11:25 |  #4

HOLLY COW IT WORKS, in continuous not autofocus it really screams!!! If I pan from a light area to a dark area the exposure also does not readjust but this is incredible, now if I could just get it to do that at lower ISO's. It also is set at Superfine and M3 so it's a real small format.


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abjam77
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Sep 07, 2009 00:47 as a reply to  @ Jannie's post |  #5

Can anyone explain this yet? Using CHDK I can get the same results with iso 100, but since you are stuck on the ISO 3200 mode the camera underexposes the image because it is setting the shutter speed and aperture for ISO3200. If I override shutter speed and aperture with CHDK, it only works for the first shot in the series. 3.8FPS quite a nice improvement for the G9 and it would be awesome to have this in all modes.


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CJinAustin
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Sep 09, 2009 12:07 |  #6
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I think the G9 automatically lowers it's resolution to 1600x1200 at iso-3200. 2MP images can be written to the card much faster than 12MP images.

But if that's the only reason all you would need to do at iso-80 is set your resolution to 1600x1200... I haven't tried that though and have no idea if it would work.


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CJinAustin
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Sep 09, 2009 18:04 |  #7
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It doesn't work... lol

Hmm... wish someone could figure out how to do this at iso 100 in CHDK,,, the camera is really booking it at 3200


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abjam77
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Sep 09, 2009 20:44 |  #8

It does not appear to have anything to do with the resolution or the shutter speed - ISO 80 photos at M3 size still only get 1.3 FPS. If you force CHDK to override shutter speed, aperture, and iso WHILE you are in the ISO 3200 scene mode, you can get the same perfomance with a lower iso, but you have to make sure you enter the shutter speed and aperture correctly to expose everything right.


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G9 - ISO3200 & continuous shooting mode = 3,8 frames/sec
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