So I've narrowed the problem down to just one lens - the 50 1.4 - the rest of my glass is actually fine. At first I thought the 70-200 had an issue too but it doesn't - things look much better in the light of day today...
You think it's worth sending my camera + 50mm to Canon? If they're able to align that combo, won't it throw off my other lenses?
Originally Posted by Jon Ruyle
It's notvery heavy for a lens this class, it weighs 5.2 lbs.
No, just the screan that came with my XTi. It's kinda hard though without a split focusing screan, but it works.
Yes you are correct, FD lenses do NOT work an EF mount unless they are converted or use an adapter. I only have one FD lens, the FD 35mm f/2.0 S.S.C. Which I havn't converted yet, but put it in front of my camera and seems to have good IQ. The rest of my lenses are Minolta MD or MC mount.
John.
With the standard APS-C viewfinder screen and a calibrated system, I think that the f/5.6 autofocus sensors are a little more accurate than I can do with manual focus through the viewfinder. But the center f/2.8 AF sensors are definitely better than anyone can do with the standard screen.
If you use a high precision screen, MF can get close to the accuracy of a calibrated f/2.8 AF system at f/2.8, but personally I think the latter is still a little better. If you have an f/2 or faster lens, then I find MF becomes better than even the f/2.8 AF sensor, doubly so if coupled with a true ground glass or split prism viewfinder (e.g. Katzeye).
Liveview beats them all, of course, for subjects that are slow enough to use it.
Your body and/or lens may be slightly out of tolerance at the zoom and focus distance you are using. If you had microadjustment (e.g. 50D upgrade), you might get sharper results. My 70-200 and 50mm f/1.4 lenses both required micro-adjustment.
Hooray! Someone actually mentioned the "Katzeye" system! I posted last year asking for KatzEye impressions but no one replied. []
I'm sure there are reviews on other sites but this is the only photo forum I ever read and I trust you guys.
Have you used a Katz screen Daniel? Anyone else - even if it starts out "I know this guy who's girlfriend's mom's best friend had one..." Seriously, anything you know about them would be helpful to me. I've read their site many times; the metering adj doesn't bother me. I'm just curious if it's anything like the Leica split prisms. (must be the 1.6x FOV complicating things for me, as I do see a big difference with the 1-series, but I still can't get over how dinky [and dark] these DSLR VFs are).
That's the larger aperture at work, right, allowing a brighter image in the VF?
I get the impression most folks here don't do much manual focusing, but whatever thoughts you'd care to share, I would appreciate reading them. Thanks All!
{btw, if you haven't tried it in awhile I recommend taking a day off from AF. What I've lost in blurry photos I've gained in slowing down the whole process and thinking more about each shot.}
Yeah, I saw your thread. As I recall, you specifically asked for people who had used it themselves, so I didn't respond.
No, but I would assume it's like using a film camera with a split prism.
That's a part of it, but I was mainly thinking because the visible DOF is slightly thinner. It's not as big as the difference from f/4 to f/2.8 with the high precision screen, but it's there. With a true ground glass or split prism, the difference would be even larger.
I have used a split prism focusing screan before on myMinoltaX-700 film camera, it works great. It gives you some feedback when you have achieved accurate focus.
Hey Daniel, how does AF confirmation compare to MF or Live View? Would it be faster than MF or Live View?
John.
Personally, I find that AF confirmation is a good technique to use to supplement MF, but I don't find it any faster than MF alone. Live view is the best I think, but for mobile subjects it can be slower as you lose and re-acquire the subject at 5X.
How do you get confirmation when you're in MF mode? Do you mean your lens is in AF mode but you focus manually, and then when you think you've got it you press your shutter halfway (or press the AF button if your cam is setup that way)?
Push the AF-ON button (or half-press shutter) while the lens is in MF mode and the focus confirmation will light up.
Hehe...okay - thought I was missing something there. So it's only "confirmation" if the camera agrees with you, otherwise it's AF... (lol)
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