Originally posted by Wheatfield I see a lot of "examples" here where people take pictures that are a test of their tracking ability, not a test of the AF, but they falsely conclude that the AF is fast enough based on the fact it can lock onto something whose distance from the camera isn't changing, it's just moving sideways really fast.
This is why I mentioned my experience at the aquarium with my 6x7. It isn't noted for being an especially fast handling camera, and it is manual focus.
And yet, it was able to capture jumping dolphins with ease.
My conclusion is that this would be a false test of an AF system.
'this any better?
zlin-62-2-2
or perhaps it's too far away (and the ratio between distnaces of focus the af has to track between is too near to 1).
how 'bout this
web-imgp1043.pef
"low light", too.
still a bit far, i admit (i am not very courageous)
web-imgp1088.pef
now it hardly gets much closer than this (except with a fisheye, in a slow hairpin, assuming you can convince the entire comitee of officials present to let you shoot there). it's also a nice shot to ilustrate my lame inability to properly track, as the action was so fast i got the nose blurred and the back sharp (common issue when panning from such a difficult position).
some really low light af (don't judge only the exposure data, i was shamelessly underexposing to get a decent shutter speed for the water)
hipo, in his natural habitat
that should cover weather-sealed af (and no, an wr body with a non-wr lens is not pointless, this was shot with the da 50-200, and i gave up when i realized, as they say, that i had water in places i hadn't known i had to begin with, sure i would have liked the da*, but we can't haveit all, everytime..).
web-sg104257
how about.. oh, wait, that's not fair, i'm cheating. this was shot with a nikon..
just pulling your leg, was shot with an m42 lens, older than myself. af is a bit slow on it with the safox VIII, so i had to prefocus and such. terrible of me to try such a dirty miss-representation.
joke aside, my point is that all tests are flawed. as long as enough people believe that the pentax af is bad, it is (at the very least for those people, but not only for them). and please don't jump at me about how well it "tracks", and how smart, the topic was about how slow it handles fast moving subject, inteligence of tracking is a different (and slimyer) can of worms.
the only test which is not flawed, the ultimate test, is people who claim to need this and that feature to handle the camera for what they need, and decide if it works for them or not. talking about what pentax could do to make those people happy is another (rather complicated) subject, but if talking about tests, that's it, that's the test. want objective tests? i love objective tests, but how many objective photographers/customers are there (i met not one).
so i guess, the moral to this story, what i am getting at, is that people who are happy and able to use this system for what they need are not those to test it for the flaws which the people who complain about it found, they will invariably find that it works fine, because, no, there is no common ground, it is so different how each of us uses their camera. the flipside to this is that telling people that the current pentax AF is good or bad is simply wrong, it cannot be either apriori, for some will be good, for others not, you need to decide that for yourself, if af is important for you. this is why i believe "who says you can't shoot fast action $%#" threads are completely pointless, and i feel the same about "pentax need to do something about the af or i will %$^$". the problem is that i cannot blame either side, as long as one side keeps at it, if the other stops, the general impression will be given by the "winning" side. so it's sort of like voting (i live it up to you to decide how much sense that makes, and how rational it seems).
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