Originally posted by distudio Sure as I mention I provided the link for information mainly on the process that they employed which was different to what you suggested. In any case all I was alluding to is that people will continue to use DSLRs the way that one was used in the example that I linked too and they will continue to be unimpressed with Pentax AF.
If you read through the thread there were quite a few respondents that cited the same problem and indicated that buying a brand x camera provided the remedy. Pentax have to acknowledge this as they are fighting to keep the slim market share they have. I just get tired of people making excuses for Pentax DSLRs lackluster AF performance, no wonder they've stayed in the AF dark ages.
Until today, I wouldn't have even dreamed of making any excuses for Pentax's poor AF tracking, although I don't really care.
I don't have big use for tracking or fast fps but always thought it could come in handy sometimes.
In essence, I am no sport shooter and thus, probably have poor technique...
Yesterday, I did a quick test, following cars as they were coming to or away from me under some light rain (thanks to weathersealing...).
These were not fast (20 to 40 km/h maybe) and I tried using C-AF and continuous drive: focus on the car then push the shutter and try to follow the car as the camera clicks away.
Results: an utter failure, maybe 10 to 20% in focus pics
Then I turned off the continuous drive but stayed in C-AF. focused on the car, half-pressed shutter to get the AF to lock and fire away by just pressing slightly harder when I believed the pics were in focus.
Results: 100% in focus shots...
I looked at the timings, I fired between 10 and 15 shots in 9-10 seconds on each car passing by... not a machine gun but sufficient for 90% of action shots I would need to take.
Then I tried another technique: pulled back in continuous drive and did the same as before, except I fired small 2/3 images bursts each time with small pauses in between to follow the "action".
Results: 90% in focus shots but I fired around 20 shots each time!
So here I stand a little confused: yesterday I would have sworn the K10 couldn't track a walking child... and now I am thinking that with good technique, I might be able to pull it!
I'll try again in different conditions (my children are going to get some execise this weekend
)... and try to post some pictures if I get anything interesting.
If anyone wants to try, I used center point only for the test and the 50-135 @135 and f2.8 (Tv: 1/500s ISO400-640 in auto). Cars were about 5 to 100 meters away...