k200d 5 minute high iso exposure test

ytterbium · 05-01-2011, 02:42 PM

Since the topic is of a low importance wanted to contribute to this tread:
https://www.pentaxforums.com/forums/pentax-dslr-discussion/30733-bulb-mode-k2...-exposure.html
But i got an error that the thread is older than a year and then all my written text disappeared, i'm presenting and angry short version of it.

Maybe someone finds this useful. I did a 5 minute (300 s) long exposure test. iso 1600, all NR off (high iso and slow speed).

I was pleasantly surprised how well the k200d did for its age.

First one with lens cap on. Second one with lens cap, viewfinder cap and camera in thick dark bag. It is interesting to see how big of a effect stray light can have. I suppose the second shot doesn't have any light leaks, and this is from something warm inside camera. Still the colour is similar to areas in first picture, but the better defined line pattern in those spots could indicate local difference (electronics nearby, worse CCD quality). Both report t=21C in exif.

IMGP6781 | Flickr - Photo Sharing!

IMGP6785 | Flickr - Photo Sharing!

gp1806 · 05-01-2011, 04:42 PM

I agree, the K200D is a fine camera, I like it.

**Ash** · 05-01-2011, 04:51 PM

Those are some hot spots from inherent noise - hard to control that. But indeed the K200D is very capable of doing very long exposures to good effect.

ytterbium · 10-08-2011, 05:52 AM

Additional note on the VF cap. When doing longer 30..60 sec exposures in broad daylight with IR720 filter, the brightest part (horizontal band) can become visible. So it is beneficial to use VF cap even in shorter exposures if there is a change of stray light.

05-01-2011, 02:42 PM	#1
ytterbium Veteran Member Join Date: Jan 2008 Posts: 1,076	k200d 5 minute high iso exposure test Since the topic is of a low importance wanted to contribute to this tread: https://www.pentaxforums.com/forums/pentax-dslr-discussion/30733-bulb-mode-k2...-exposure.html But i got an error that the thread is older than a year and then all my written text disappeared, i'm presenting and angry short version of it. Maybe someone finds this useful. I did a 5 minute (300 s) long exposure test. iso 1600, all NR off (high iso and slow speed). I was pleasantly surprised how well the k200d did for its age. First one with lens cap on. Second one with lens cap, viewfinder cap and camera in thick dark bag. It is interesting to see how big of a effect stray light can have. I suppose the second shot doesn't have any light leaks, and this is from something warm inside camera. Still the colour is similar to areas in first picture, but the better defined line pattern in those spots could indicate local difference (electronics nearby, worse CCD quality). Both report t=21C in exif. IMGP6781 \| Flickr - Photo Sharing! IMGP6785 \| Flickr - Photo Sharing!

05-01-2011, 04:51 PM	#3
Ash Loyal Site Supporter Join Date: Mar 2007 Location: Toowoomba, Queensland Photos: Gallery \| Albums Posts: 23,920	Those are some hot spots from inherent noise - hard to control that. But indeed the K200D is very capable of doing very long exposures to good effect. Last edited by Ash; 05-01-2011 at 05:04 PM.

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05-01-2011, 04:42 PM	#2
gp1806 Veteran Member Join Date: Mar 2009 Location: Chicago suburbs Photos: Albums Posts: 848	I agree, the K200D is a fine camera, I like it.

10-08-2011, 05:52 AM	#4
ytterbium Veteran Member Join Date: Jan 2008 Posts: 1,076 Original Poster	Additional note on the VF cap. When doing longer 30..60 sec exposures in broad daylight with IR720 filter, the brightest part (horizontal band) can become visible. So it is beneficial to use VF cap even in shorter exposures if there is a change of stray light.