brainiac wrote:
Sadly I have just sold my 1Ds3. I say sadly because I did not expect my new 5D2 to have significantly worse performance at low ISOs, but it does seem to.
This is an ISO 200 HTP file, which is the same as an underexposed ISO 100 image. Having ALO activated only exacerbates the situations. I\'m also guessing you have peripheral illumination activated with your ultra wide angle lens shot nearly wide open. What you have here is essentially is the shadow area of a severely underexposed ISO 100 image where the deepest, darkest parts in the corner have been pushed up in exposure by at least 3 to 4 stops (ALO + HTP + Peripheral Correction).
No wonder banding occured. I do not doubt the 1Dsmk3, 1Dmk3, and D700 will all buckle under those conditions as well.
Funny enough, I started a thread about low ISO banding in the 5Dmk2 a while ago. I caught a lot of flak for it from people saying the noise doesn\'t manifest itself in real life situations. Well, your sample proves other wise. HTP + ALO + Peripheral Correction + Underexposure = The Perfect Storm.
brainiac wrote:
Sadly I have just sold my 1Ds3. I say sadly because I did not expect my new 5D2 to have significantly worse performance at low ISOs, but it does seem to.
This is an ISO 200 HTP file, which is the same as an underexposed ISO 100 image. Having ALO activated only exacerbates the situations. I\'m also guessing you have peripheral illumination activated with your ultra wide angle lens shot nearly wide open. What you have here is essentially is the shadow area of a severely underexposed ISO 100 image where the deepest, darkest parts in the corner have been pushed up in exposure by at least 3 to 4 stops (ALO + HTP + Peripheral Correction).
No wonder banding occured. I do not doubt the 1Dsmk3, 1Dmk3, and D700 will all buckle under those conditions as well.
Funny enough, I started a thread about low ISO banding in the 5Dmk2 a while ago. I caught a lot of flak for it from people saying the noise doesn\'t manifest itself in real life situations. Well, your sample proves other wise. HTP + ALO + Peripheral Correction = The Perfect Storm.
Feb 03, 2009 at 07:10 PM
Previous versions of Rubber Soul's message #6677609 « 5D2 low ISO poor v 1Ds3 »
