« on: March 28, 2012, 10:14:13 AM »
It's not just about the s/n improvement, but the noise have a more pleasant film grain appearance with no banding
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So I have a the new 5dmk3 and a 50mm 1.2L. I have been trying to get the micro adjustment on the lens just right, but but I figured out why it had been a bit confusing up to this point. If I use the center point (or any AF point within the metering ring) I get spot on tack sharp AF on like 90% of the shots with 0 MFA. BUT, if I use one of the outer AF spots I get pretty bad back focusing (like +15). I thought maybe it was the body I had, so I just went back to the camera store and exchanged it for another body hoping that I would at least be able to figure out if that was the variable. Turns out this body is exactly the same. This makes me think it is either difficult for the AF to get a good lock due to the aberrations of the glass the closer you get to the edge, or something wrong with the lens itself (it is brand new and date code is uz0909). I'm also just wondering if this is the price you pay with AF on really fast glass. That is where you come in. If you have fast glass (1.2) try checking the AF accuracy on center point and a more lateral point and lets see if we can come to a consensus. I'm especially interested in 50mm 1.2 as thats what I'm working with. I tested my 70-200 2.8 and it's pretty spot on with no MFA, on both center and lateral AF points. I'll post a few test shots of my 50 when I get home later.
That is part of my disappointment. I have not used the DPP software because of the known issues. I'm using the Adobe DNG converter and photoshop and than maybe importing into lightroom, but going from the converter to photoshop is the best option at this time (actually its the only option). At the risk of repeating myself, I'm uncomfortable with the fact that the camera is released without any software that can process the images. Its a big leap of faith to assume that all is well with the raw images when cannon has not released software that can process them and the raw images where not available to the pre-testers either. Since I'm not using the DPP software it seems to be a hardware issue, but It could be operator error. Maybe the focus system is so advanced that it requires schooling to achieve acceptable results. I just don't know. Learned a big lesson, never buy a pre-released product. My father taught me to never throw away your old shoes until you have a good new pair. I forgot that lesson this time.
An interesting development tonight. I have been working at +6 all day on my 50 1.2 and been pretty happy, thought I might see a bit of front focus this evening, set back to 0 and everything is totally spot on. Will check tomorrow once the sun comes up if it is the lighting or if it just needed a bit of working in as the lens and body are brand new (makes no sense, I know).
perhaps i am splitting hairs or maybe in this case eyelashes
first image is dpp preview crop screen shot
second image is acr6.7 crop screen shot
shot at f2.8 1/500 sec ISO 100 AWB
these are 100% crops
obviously 5D mk3 and lens is the 50mm f1.4 canon
What is the datecode on your 50L2?