Originally posted by JohnBee I think many people are overlooking the potential catch-in focus function that can be used with manual lenses. And though this could easily be replaced with a split screen with static work, it can prove to be quite indispensable in other types of shooting. And so in this sense, a Katzeye really can't compensate. it can help!, but it won't compensate for the loss of that function.
However... I think the inherent differences between the camera AF and it's potential is now clearer. Though I remain perplexed by the fact that a camera could properly focus with fast lenses(1.4) using AF, whereas it cannot AF confirm the same lens while in MF.
Granted... this isn't the end of the world(and I think we we all know better...). Though it does come across as a bump in the road(so to speak) when we constrast such issues with earlier systems that seem to work better in this respect.
Just to be clear, since I got 1) a replacement K-5 and 2) firmware 1.03, my AF system works quite well - at least as well as my K20D, and faster to boot. Catch-in-focus works quite well for most subjects. Testing with Bigma, I found that in extremely low contrast situations with (relatively) slow lenses, my K-5 FFs a bit. To contrast that, with the same lens and subject, the K20D hunts back and forth and often gives me a flashing green (can't focus) light. When it does lock, though, it's occasionally more accurate than the K-5, but still spotty. By comparison, a friend's CaNikon wouldn't lock on it either. But if I adjusted my point of focus just a bit to the right to find a strong vertical line, the focus on the K-5 locked in immediately, as did the other cameras.
In short, I have to work pretty hard to create situations in which my K-5 focus system fails (select light level, select low-contrast subject, etc).
The manual focus was off from day one, though. I set it up with the classic 45 degree angle to a yardstick and used a 135mm f2.8 lens, and it was quite obvious. Focus on 10, and 14 was in focus. And the DOF with that lens is pretty clear.