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Forum: Pentax K-30 & K-50 09-05-2012, 06:27 PM  
Sticky: Pentax K-30 In-Depth Review by PentaxForums.com
Posted By cloud016
Replies: 79
Views: 78,973
very good review!
a little suggestion: can you do same autofocus tests on accuracy and speed with some Canon/Nikon`s competitve models?
Forum: Pentax K-r 02-14-2011, 06:36 AM  
DA35 Ltd AF speed on k-r
Posted By cloud016
Replies: 2
Views: 1,928
Yes, DA 35le focus much faster on my K-r than my old K-m. But not so quick as fa35 or 18-55 kit lens.
Forum: Pentax K-r 01-31-2011, 06:28 PM  
Yet another K-r AF test (with both 1.00 and 1.01)
Posted By cloud016
Replies: 229
Views: 40,109
testing af should with certain distance, not the close up distance!
AF microadjustment for the 1Ds mark III, 1D Mk3, 5D Mk2, 7D

Note - Camera-to-subject distance should ideally be no less than 50 times the focal length of the lens. For a 50mm lens, that would be at least 2.5 meters (25m for a 500mm)

FH, could you take some 'real life' shots like portrait or more distinct subject? no offence, but your sample was took at 40mm/f5.6 on a complex texture and maybe at very close range.
that`s not easy to distinguish.


ursamajor
, I am worried about the 'software solution', maybe they(Pentax) just expand the af adjustmant range.
Forum: Pentax K-r 01-28-2011, 01:18 AM  
Yet another K-r AF test (with both 1.00 and 1.01)
Posted By cloud016
Replies: 229
Views: 40,109
Come`on...you called that one is 'in focus'? check these...
by k-m







Forum: Pentax K-r 01-27-2011, 11:43 PM  
Yet another K-r AF test (with both 1.00 and 1.01)
Posted By cloud016
Replies: 229
Views: 40,109
FHPhotographer, sorry I have deleted all the FF pics from that badminton games, I have only pics with af-adjustment -10, you can see in the EXIF. the pics are pp worked and denoised.

with da*50-135







and this one took in the first few weeks my K-r arrived, I had not noticed the FF issue yet.
the focus point should be on the show girl`s eye. the showroom is well lit but warm colour temp.
with fa43mm le
Forum: Pentax K-r 01-27-2011, 06:47 PM  
Yet another K-r AF test (with both 1.00 and 1.01)
Posted By cloud016
Replies: 229
Views: 40,109
this is the situation I also found on my k-r....
last week I shoot badminton games in a well lit gym, but the lit color is warm(yellow), my k-r need to adjust focus to -10
Forum: Pentax K-r 12-21-2010, 07:59 PM  
Pentax K-r -- acceptable focus adjust for a new body?
Posted By cloud016
Replies: 26
Views: 14,405
I saw in some other thread reported they got new correct focus K-r, so I brought mine (no.382xxxx) to my local vendor this morning. They tested mine and a whole new one (no.39xxxxx) but still front-focus under artificial light :(
They sent my k-r with FA77 back to Japan. hope Pentax could fix it..
Forum: Pentax K-r 11-21-2010, 06:52 AM  
my K-r AF test
Posted By cloud016
Replies: 9
Views: 4,989
I tried. no better for autofocus.
Forum: Pentax K-r 11-19-2010, 09:00 AM  
my K-r AF test
Posted By cloud016
Replies: 9
Views: 4,989
yes, tungsten wb setting results better. but even K-m AWB works better.

I think the af should be more consistent! especially when shooting under more complicated light sources, like wedding, stage performance...
Forum: Pentax K-r 11-18-2010, 08:27 PM  
my K-r AF test
Posted By cloud016
Replies: 9
Views: 4,989
btw, I also tried with K-m, which in general did better result than K-r.
But setting K-r with tungsten wb and af adjust -5 looks more precisely.

Wish it can be fixed by new firmware.
Forum: Pentax K-r 11-18-2010, 07:31 PM  
my K-r AF test
Posted By cloud016
Replies: 9
Views: 4,989
Hi guys,
I got my new K-r for 2 weeks, everything is fine but with af under tungsten light.
I have tried "Moire' Interference Patterns" @ Using Moire' Interference Patterns to Test DSLR Auto Focus, af is fine under normal light, but I found some BF/FF situation under tungsten light.

Here are some test images done last night. Handheld with FA31 ltd.

1. the test setup


2.


3.


4.


5.


6. tried with no af adjust again, still bf/ff



did i get a defect K-r?
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