Stephen Sullivan , Jun 24, 2008; 07:51 p.m.
Hello,
I was shooting today with my 5D and I wanted to do a little experimenting. Well I got back not what I had expected or hoped for.
Is this what is to be expected from Optics or do I need to send my EF 50 back to Canon?
5D EI 50 with Mirror Lockup & Cable Release.
EF 50mm f/1.4 USM with B+W Cir-Pl at Infinity (Focused and Locked At.)
Now I know at f/1.4 you'll have no depth of field, but should I have this little of resolution. As I stop down, resolution increases. Is this
normal?
Thank you.
5D & EF 50mm @ f/8 Full Horizon
Stephen Sullivan , Jun 24, 2008; 07:53 p.m.
5D & EF 50 @ f/1.4
Stephen Sullivan , Jun 24, 2008; 07:53 p.m.
5D & EF 50 @ f/2.0
Stephen Sullivan , Jun 24, 2008; 07:54 p.m.
5D & EF 50 @ f/2.8
Stephen Sullivan , Jun 24, 2008; 07:55 p.m.
f/8 {I'll skip 3.2 to 7.1}
5D & EF 50 @ f/8
Alex Kaufman , Jun 24, 2008; 07:55 p.m.
Mine does the exact same thing.
Bill Clark - Minnetonka Minnesota 
, Jun 24, 2008; 07:56 p.m.
Auto-focus?
I find manual focus works best with this type of photography.
Look at the lates Vogue issue. Wonder photography by Anne L.
Stephen Sullivan , Jun 24, 2008; 08:02 p.m.
Yes, initial Auto Focus on one of the buildings. Then I turned the AF switch to M.
Now I know that @ f/1.4 you'll get a lot of light fall off at the edges. As you stop down the light fall off at the edges will
become minimal, example f/5. But should the resolution be this poor at f/1.4 or even f/2?
G Dan Mitchell , Jun 24, 2008; 08:03 p.m.
If those are 100% crops...
... sort of normal, in that you see a softer image at f/1.4 that begins to sharpen up around f/2 and then becomes very, very
sharp at smaller apertures. (You might even see slightly better resolution at f/11 on your FF body.)
If those are NOT displayed at 100%, you have a problem with AF or something else.
Dan
Asher . , Jun 24, 2008; 08:07 p.m.
Maybe I'm misunderstanding the "problem" given the limitations of communicating via forum, but first, are you shooting raw? Pixel peeping jpegs is not a rewarding experience.
My 5D + 50mm f1.4 lens performs beautifully wide open, when focused accordingly. However, the first new copy I received had a faulty focusing mechanism- it felt like it was uncoupled. B&H replaced it immediately, free of shipping charges and I've had no problems with it since.
