How sharp became your 50 1.2L AFTER the calibration?

[fellipe_de_paula]

<p>Does the calibration improve sharpness? If you sent your 50 1.2L for calibration please share the results.</p>

[steven_f1]

<p>If the lens is working OK calibration won't improve sharpness. If the lens doesn't focus correctly or has a lens out of alignment and calibration fixes the problem, then yes, sharpness will improve. </p>

<p>If you are concerned about your images, post an example picture. Perhaps the issue is not your lens.</p>

[PuppyDigs]

<p>I mainly use my 50 1.2L wide open to F2.8, so the only thing sharply in focus is a razor thin slice of the subject. So for those few millimeters of useable DOF it's friggen kickass deadly sharp. The other 90% of the image is a pleasant mozaic of bokeh--the main reason I bought this lens.</p>

<p>If you want everything in the picture sharp, you'll need to stop down to F16 and use hyperfocal distance. Not what anyone buys this lens for, but it can be done.</p>

[digitmstr]

<p>Calibration deals with focus accuracy when coupled with a given EOS body - not sharpness per se, which is a function of the resolving power, contrast and other lens design qualities.<br>

Such lenses are usually purchased to do low light work within the 1.2-2.8 range as such the DOF is extremely narrow - that means you have be extremely precise in focusing the lens on the proper subject area since everything else will be oof.</p>

[edrodgers]

<p>If you see a big difference between focusing manually and using auto focus, perhaps calibration will help. Use a precision focus screen or live view to verify.</p>

<p>My copy was dead on perfect straight from the factory.</p>

<p>In my travels, most of the problems people have with this lens are user error.</p>

[daniel flather]

<p><em>In my travels, most of the problems people have with this lens are user error.</em></p>

<p>Yes, as it is with the 1.4 wide open.</p>

[david_amberson1]

<p>Fellipe, check your email, I sent you one.</p>

[angel_bocanegra]

<p>I sent mine in twice. Once when I had a 30D, and the second I sent both the body and lens to make sure they are calibrated together as it was suggested by the canon service rep. I only noticed a minor difference, still not as sharp as the 50mm f1.4. When I got a 40D it had same image quality as with the 30D. But when I went FF with 5D and later 5dmkII, with the latter body combination being WOW tack sharp! and former very very sharp. I guess it makes sense to use an expensive lens with an expensive body, IDK.</p>

[david_amberson1]

<p>Angel, you were lucky. The more expensive bodies dont help. I have a 1D3 and have had issues too. You should have bought a lottery ticket when you got the 5D's cause your luck was good that day.</p>

[chris_clarke3]

<p>I agree with Ed and the others. This lens is difficult to master because of the narrow DOF. I have been very impressed with it using live view. I've also got some great hand-held shots. It's quite sharp at 1.8.</p>