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Forum: Pentax DSLR Discussion 06-28-2008, 12:24 AM  
K20D 1.01 firmware update broke iphoto 08' PEF support
Posted By reddream
Replies: 40
Views: 7,914
1.01 only changed the company name from 'Pentax Corporation' to 'Pentax', which also confuse Picasa.
Forum: Pentax DSLR Discussion 06-15-2008, 09:51 PM  
Firmware V1.01 for K20D released
Posted By reddream
Replies: 6
Views: 2,096
Because of time difference?
Forum: Pentax DSLR Discussion 06-15-2008, 08:57 PM  
Firmware V1.01 for K20D released
Posted By reddream
Replies: 6
Views: 2,096
Thank you for using a PENTAX K20D digital camera.
PENTAX wishes to announce the release of Firmware Update Software Version 1.01 for K20D.
Firmware in this document is the software that runs inside digital cameras.

Changes to V1.01

* The following content have been improved in Version 1.01
Minimize the noise when taking picture with 2 seconds self-timer mode.

Caution

* Only K20D users are permitted to download the firmware update.
:):lol:
Forum: Pentax DSLR Discussion 06-15-2008, 08:15 PM  
K200D Viewfinder vs K20D Viewfinder
Posted By reddream
Replies: 7
Views: 5,524
I don't know K200D, my selection is based on my K20D and K100D
2)
:)
Forum: Pentax DSLR Discussion 05-28-2008, 08:19 AM  
To all concerned with K20D/Hot Pixel Issue
Posted By reddream
Replies: 170
Views: 24,336
No. I don't think Pentax could work out a new algorithm in couple of days by firmware. In my opinion, they just forgot to subtract dead/defective pixels in some scenarios (2s timer, remote 3s, etc.).
Forum: Pentax DSLR Discussion 05-27-2008, 09:56 PM  
To all concerned with K20D/Hot Pixel Issue
Posted By reddream
Replies: 170
Views: 24,336
I just viewed this post on my desktop computer (with dell LCD) and couldn't see any hot pixels in my attached crop and I had to increase some degree of brightness to make them visible. Then I switched back to my old IBM T40 laptop, all those hot pixels are obvious:o. So using a tool such as dead pixel test could help to reach a fair conclusion.
Forum: Pentax DSLR Discussion 05-27-2008, 09:38 PM  
To all concerned with K20D/Hot Pixel Issue
Posted By reddream
Replies: 170
Views: 24,336
I did a pixel mapping also before my test and got hundreds of visible pixels. I think you are lucky.
Forum: Pentax DSLR Discussion 05-27-2008, 09:12 PM  
To all concerned with K20D/Hot Pixel Issue
Posted By reddream
Replies: 170
Views: 24,336
My Result:

1. ISO 200, 1/60, 2 sec mirror, M, lens cap on, High ISO Noise Reduction weak
13 pixels when threshold = 60
397 pixels when threshold = 20
628 pixels when threshold = 17
2064 pixels when threshold = 9 (still visible)

2. Same setting except 2 sec timer
0 pixels when threshold > 17
1 pixels when threshold = 17
108 pixels when threshold = 9
Forum: Pentax DSLR Discussion 05-27-2008, 04:20 AM  
To all concerned with K20D/Hot Pixel Issue
Posted By reddream
Replies: 170
Views: 24,336
It seems that every K20D have this 2s-self timer bug. The problem is easy to reproduce. Not really related to liveview, iso and high iso noise reduction. I got about 2000 dead pixels (using a dead pixel test tool):(, pixel mapping doesn't help.
I think they are defective pixels instead of hot pixels because they are almost fixed. So I think it's just a ugly software bug and it should be easy to fix.
Forum: Pentax DSLR Discussion 05-15-2008, 02:48 AM  
To all concerned with K20D/Hot Pixel Issue
Posted By reddream
Replies: 170
Views: 24,336
I found this issue is easy to reproduce. In fact, I rarely shoot in RAW (2 out of 2500 pics). But when I converted my only 2 dng (normal shoot without live view) files into tiff using DCRAW today, I did find out several hot pixels.
When I view the result in Picasa, I found Picasa doesn't remove hot pixels (of raw) either. So checking raw in Picasa seems to be the easiest way to verify this problem.
Forum: Pentax SLR Lens Discussion 05-03-2008, 06:18 AM  
penta 16-50mm lens alternative
Posted By reddream
Replies: 12
Views: 3,718
I think you will love SDM and build quality which come with DA* 50-135, so give 16-50 a chance.
Forum: Pentax DSLR Discussion 04-18-2008, 07:58 PM  
New k20d shutter count?
Posted By reddream
Replies: 6
Views: 3,707
My img number started with zero also. But my shutter count is img number plus 2xx. I think this count is reasonable (caused by by QC of factory?)
Forum: Pentax DSLR Discussion 04-18-2008, 06:37 PM  
New k20d shutter count?
Posted By reddream
Replies: 6
Views: 3,707
Mine is img number + 2xx
Forum: Pentax SLR Lens Discussion 04-08-2008, 08:17 AM  
Poll: Question for 16-50mm owners
Posted By reddream
Replies: 1,099
Views: 128,625
Thank you all for the comments. I should provide more evidence for this lens, but I cannot, since most of the test pics had been deleted immediately after checking on camera.
In fact, I've returned this lens and ordered a K20D... WOW! Maybe I'll come back someday, to DA*16-50 II, ;)
Forum: Pentax SLR Lens Discussion 04-04-2008, 05:56 PM  
Poll: Question for 16-50mm owners
Posted By reddream
Replies: 1,099
Views: 128,625
I've done this test dozens of times, with an even flat focus chart, on tripod, SR off, and got the same result...
Forum: Pentax SLR Lens Discussion 04-04-2008, 04:24 PM  
Poll: Question for 16-50mm owners
Posted By reddream
Replies: 1,099
Views: 128,625
thank you Ole.
Forum: Pentax SLR Lens Discussion 04-04-2008, 07:02 AM  
Poll: Question for 16-50mm owners
Posted By reddream
Replies: 1,099
Views: 128,625
Hello,
I found a problem when I did focus test with my new DA*16-50. It's clear that the right border is sharper than the left border especially at 50mm 2.8. Is it normal for DA*16-50? Is is a design defect or just a QC problem?
So what do you think, return or replace?

SN: 9011464
Made at: Dec, 2007

Thank you
red
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