Lens calibration shop

Posted 03/06/2014 - 09:05 Link
I actually tried the dottune method last night, will do it again today since light wasnt that good indoors, I must say its pretty accurate and its much better than testing on focus charts. focus confirmed all the way from +4 to +10. dont know how much above +10 it will confirm. it will need to go all the way to +16 to get an average of +10. Ive set it to +8 and it seems i get the best of both worlds, focusing near and far.
Algernon
Posted 03/06/2014 - 11:09 Link
It's important not to use Tungsten light for calibrating.
Bright daylight or a good daylight bank of LED's is better.

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Half Man... Half Pentax ... Half Cucumber

Pentax K-1 + K-5 and some other stuff

Algi
Posted 03/06/2014 - 11:31 Link
Yep im aware even though i was shining a LED flashlight at the subject. Will redo it outdoors
Smeggypants
Posted 03/06/2014 - 21:58 Link
Algernon wrote:
It's important not to use Tungsten light for calibrating.
Bright daylight or a good daylight bank of LED's is better.

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Yup indeed. The K-5 had problems with tungsten and low light AF and Firmware 1.03 was released to try and improve it
[i]Bodies: 1x K-5IIs, 2x K-5, Sony TX-5, Nokia 808
Lenses: Pentax DA 10-17mm ED(IF) Fish Eye, Pentax DA 14mm f/2.8, Sigma 17-70mm f/2.8, Pentax-A 28mm f/2.8, Sigma 30mm F1.4 EX DC, Pentax-A 50mm f/1.2, Pentax-A 50mm f/1.4, Pentax-FA 50mm f/1.4, Pentax-A 50mm f/1.7, Pentax DA* 50-135mm f/2.8, Sigma 135-400mm APO DG, and more ..
Flash: AF-540FGZ, Vivitar 283
Posted 05/06/2014 - 13:35 Link
heres some test shots with the DA15mm. You guys can tell me if it looks ok or not.

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