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DPChallenge Forums >> Hardware and Software >> canon 50mm 1.2L....EXTREME disappointment
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05/02/2008 08:10:57 PM · #51
It is theoratically possible to focus recompose without rotating the focal plane by moving the camera up or down perpendicular to camera direction., eg. by bending your knees and moving slowly while keepng your spine straight. It might look strange to your model but it's probably a very good exercise for you thighs. :)

I don't do anything about it meself while shooting. I take more shots if DOF extremely thin and hope that lateral movement corrects the shift on some of the shots. It's still only few millimeters on a tight headshot with a 50mm and a non-issue when you're further away or using longer lenses.

05/02/2008 08:19:55 PM · #52
Originally posted by lovethelight:

I did some more specific really really careful testing and came to the conclusion of backfocusing. I am very excited about the quality I managed to get after this last test:

These were taken in the same location, same lighting and both at f/3.5. The difference is that the one on the left was taken with my 1.7 on my sony and at ISO100 1/200ss and the one on the right was taken with the 50mm 1.2 on my canon at iso 160 and ss 1/250

both are unedited and unsharpened. They are 100% crops.
[thumb]675452[/thumb][thumb]675454[/thumb]

yay!


The 50/1.2 L looks WAY sharper here. At least it's working on f/3.5 :-) I'd do some more testig if I were you. Shoot the minolta at f/1.7 and the 50L at f/1.6 or f/1.8 and both at f/2. Try shooting a stationary object from a tripod at f/1.2.

Good luck!
05/02/2008 11:30:10 PM · #53
Originally posted by lovethelight:

[thumb]675452[/thumb][thumb]675454[/thumb]

yay!


Woohoo! Now THAT is more like it! Although I still think you can do even better with that lens (more careful focus), it's now at least looking like what you should expect. And the comparison ... really shows the limitations of the other camera/lens.


05/04/2008 10:42:53 AM · #54
Agreed. I used to always have to worry about my aperture in low light with the f/1.8. When I switched to the f/1.4, this worry disappeared. I still like to push the aperture to f/1.8 or f/2 out of habit, but those higher quality primes by canon can easily yield breathtaking results. I have a number of wedding pictures from about a month ago where off a 3/4 body shot I have beautiful definition in the eyelashes like that.

Sometimes I just sit and marvel.

If you are sending the lens back, at least ask for a 50mm f/1.4 USM as a loaner.

Additionally, as was mentioned by someone else a bit earlier, I'd not be shooting portraits for lens tests. I'd do what the pro's do. Grab a ruler that has millimeters and throw it on a 30 degree or 45 degree angle. Set the camera to center focus point and take 10 pictures, 3 in a row and then focus elsewhere, and come back between a few shots. Take a few with different focus points selected too.

This should give a fairly broad bit of information that would be usable to whatever service technicians you speak with. Additionally, you will give them the impression that you have a clue, which may help to get more immediate service.

Even though I'm not a Canon Pro Shooter, I get similar or (sometimes) even better service when I go to the service center in Taipei because of taking these steps (and a few others that I've picked up along the way).
05/04/2008 10:49:01 AM · #55
Originally posted by awpollard:


Yup... Check you Picture Style (Canon 40D) settings and change them to what you are used to (or like) A couple of them are soft by default (Portrait is one of them), I ended up setting the sharpness to 5 on most of my PS's.


incidentally, you might be surprised how unecessary this really is once you switch to a really sharp lens.

I shoot with the sharpness as low as it can go in-camera. I still get sharp and clean results even without Post processing. True, I usually try to get them sharper with some mild sharpening or whatever is appropriate, but boosting in-camera sharpness isn't really the answer. Especially with a 1300 dollar 50mm prime.
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