Gear Talk > EOS Bodies - For Stills
5DM3 ISO 1600/3200 bad technique, or broken camera?
mitchell3417:
On the first one her face is not properly exposed which contributes to the noise. It also seems like the first one is a touch out of focus. I would personally dial up the ISO 2 stops and the aperture a stop. This gives you a better exposure on her face, which you seem concerned about, and it gives you more depth of field for more sharpness.
The camera might be front or back focusing slightly. Did you micro adjust your lenses.
photokid:
thanks for your replies
I did use AIServo, I also tried various AF settings, including single point, expansion etc, I could use flash, but even at +3 FEC it wasn't enough given where i was standing, my daughter had to do the move where she could, we had little control over that, due to the fact that there were every level and she skates clockwise, most others are anti clockwise. I didn;t just point the camera and expect it to know what to do, as you'll see it was used in manual mode I tried to use 6400 but that was even worse, but the results were typical no matter what focus mode i used, and it was easier to keep her in the focus points when using expansion, zone etc. it's the noise that i'm concerned about, the lighting wasn't great but i was expecting better. Perhaps i need to increase my tracking technique, as keeping focus on her face was nigh on impossible and i suppose it does;t help that she was wearing black, i did ask her to wear brighter colours but teenage girls.....
I only took the shots as she asked me to take some of her airborne, and to be honest they have cleaned up not bad in post, and she is delighted with the results, but i was a little concerned about the noise levels, thanks for your help.
photokid:
--- Quote from: mitchell3417 on May 19, 2012, 01:34:17 PM ---On the first one her face is not properly exposed which contributes to the noise. It also seems like the first one is a touch out of focus. I would personally dial up the ISO 2 stops and the aperture a stop. This gives you a better exposure on her face, which you seem concerned about, and it gives you more depth of field for more sharpness.
The camera might be front or back focusing slightly. Did you micro adjust your lenses.
--- End quote ---
i'll try that next time, but at ISO 6400 it looked worse when chimping. Things looked better at 1/640 but there was too much motion blur, I also experimented with IS mode 1, mode 2 and off but it made little difference.
So far with the 70-200 i haven't need to use micro adjust, i did need a little on the 5D2 but not so on the MKIII, the 35L has around +5 or +7 from memory, but it seems to be inconstant depending on wether you are focusing on a near or far point, I have a shipping voucher to send the camera back to Canon for the light leak (non) Issue so i may send the 35L in at the same time for calibration.
wockawocka:
It's underexposed.
F/1.6 on a 35L is going to be risky, moreover risky on any lens at that aperture.
If noise is magnified by a lot if you don't get the exposure right and the subject matter is low contrast.
The first image is down to too wide an aperture.
The second is still a telephoto lens wide open at 2.8, did you have the IR focus assist enabled on the flash? If so turn the assist light off (camera menu) as it wouldn't of fired until the light gave it a lock but by that time the subject had skated past the AF point.
Turn the AF Microadjust off, it's junk and anything moving use AI servo.
To get the correct exposure meter off the ICE and overexpose by 1.5-2 stops.
photokid:
--- Quote from: wockawocka on May 19, 2012, 01:58:09 PM ---It's underexposed.
F/1.6 on a 35L is going to be risky, moreover risky on any lens at that aperture.
If noise is magnified by a lot if you don't get the exposure right and the subject matter is low contrast.
The first image is down to too wide an aperture.
The second is still a telephoto lens wide open at 2.8, did you have the IR focus assist enabled on the flash? If so turn the assist light off (camera menu) as it wouldn't of fired until the light gave it a lock but by that time the subject had skated past the AF point.
Turn the AF Microadjust off, it's junk and anything moving use AI servo.
To get the correct exposure meter off the ICE and overexpose by 1.5-2 stops.
--- End quote ---
Thanks, that's helpful, it's what I deep down suspected. I wasn't using focus assist, and I use back button focus, to be honest I never used ICE I just set it until it looked fine on camera screen, i should use histogram much more :)
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