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03-12-2011, 07:30 AM   #76
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QuoteOriginally posted by WerTicus Quote
contrast af got a lot faster with the K-5. Its also almost always a superior result to phase. Which is so prone to variation.
I have to say the Contrast AF on the k-5 is quite fast. The slowness comes from taking your eye off the viewfinder, pressing the LV button, looking at the LCD screen, aiming the square at the target and have the AF work, before pressing the shutter button. Not so good when the 'moment' has probably gone.

03-12-2011, 11:25 AM   #77
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QuoteOriginally posted by jolepp Quote
Conclusion: the new firmware was a marked improvement for me, with 1.02 FF set in around EV 4-3, now this seems to happen around EV 2-1. Crucially this means that AF should now work with something like f=2.8 t=1/30s ISO=3200 (EV 3) even if there happens to be a tungsten bulb around.
+1..exactly the same experience here.

Andras

Last edited by planedriver; 03-12-2011 at 11:49 AM.
03-12-2011, 12:25 PM   #78
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QuoteOriginally posted by jolepp Quote
Enclosed is a series with the DFA 100mm 1:2.8 @1m f=2.8 in direct light from a 25W tungsten bulb (right of camera, ~-30-40 deg angle, distance varied to control light intensity), target from post #43 folded for 1" difference in depth from right or left to middle section.

#1 : EV 4 (t=0.5s) : camera wb 3371K
#2 : EV 3 (t=1.0s) : camera wb 3308K
#3 : EV 2 (t=2.0s) : camera wb 3266K
#4 : EV 1 (t=4.0s) : camera wb 3278K
Hey there Jolepp.

how do you calculated the temperature of an image?
03-12-2011, 01:19 PM   #79
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Ufraw reports these values as "camera wb". The value is stored in the raw file by the camera I presume (in one form or another, not necessarily in Kelvins as ufraw reports it).

03-12-2011, 03:14 PM   #80
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QuoteOriginally posted by jolepp Quote
Ufraw reports these values as "camera wb". The value is stored in the raw file by the camera I presume (in one form or another, not necessarily in Kelvins as ufraw reports it).
Ahhh OK, thanks
03-14-2011, 04:10 AM   #81
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I have performed a similar test and unfortunately the problem is still there with 1.03. Tested with 3 different lensens.

See the results here: focustest - a set on Flickr
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