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01-12-2009, 09:20 AM   #16
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QuoteOriginally posted by thomps6s Quote
Make sure you keep it in a plastic bag until it comes back up to room temperature.
To keep moisture from condensating on it?
Thanks for the tip

01-12-2009, 09:32 AM   #17
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QuoteOriginally posted by kenyee Quote
To keep moisture from condensating on it?
Thanks for the tip
Yeah, or at least, leave it zipped up in your case/bag until it comes up to temp. Condensation is not good for the body and lens.
01-12-2009, 09:59 AM   #18
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QuoteOriginally posted by Douglas_of_Sweden Quote
I never read that part of the manual, so I've shot as far down as -18C with the K20D without problems. (snip)

The camera will probably work just fine in temperatures well above or below that (I've shot in colder temps as well), but manufactuers just cannot make any assurances of that - any promise that odd issues won't occasionally occur. They can only tell us about the truly reliable temperature range, leaving it to us to take whatever steps we might choose outside those temperatures.

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01-12-2009, 11:53 AM   #19
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But what about the pictures with stripes and banding taken above freezing point? (and below 40 deg. celcius)

Normal behaviour or just defects?

01-12-2009, 01:37 PM   #20
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QuoteOriginally posted by rverhag Quote
But what about the pictures with stripes and banding taken above freezing point? (and below 40 deg. celcius)
Normal behaviour or just defects?
Obvious defect IMHO.
Either at the memory card or in the camera body. Both can end up w/ parts that are iffy as it gets cooler.
01-12-2009, 02:41 PM   #21
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QuoteOriginally posted by rverhag Quote
But what about the pictures with stripes and banding taken above freezing point? (and below 40 deg. celcius)

Normal behaviour or just defects?
if you do things in temperatures that arent rated or suggested for a particular device, expect things to go wrong during or after - even at normal room temperature.

even sandisk extreme III cards are only rated for use in temps from -25C to 85C (-13F to 185F)
01-12-2009, 03:30 PM   #22
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QuoteOriginally posted by Vylen Quote
if you do things in temperatures that arent rated or suggested for a particular device, expect things to go wrong during or after - even at normal room temperature.

even sandisk extreme III cards are only rated for use in temps from -25C to 85C (-13F to 185F)
Agree, but i bought my K20D last august and noticed the first stripes end of september.

My place is Vlissingen, Zeeland (the old one in the Netherlands) and during these months i never left Holland. Furthermore i can assure you that temperatures won't drop below zero * during august and september in my place

* degrees celcius
01-13-2009, 06:43 AM   #23
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How about..

QuoteOriginally posted by stewart_photo Quote
K20D owners manual, page 4: The temperature range for camera use is 0° C to 40° C (32° F to 104° F). Probably the same with K10D and other Pentax cameras.

stewart
.. Just under 10 deg. C or at around 2 deg. C, under which those different K20D units *still* didn't work correctly, *also*??

01-31-2009, 03:03 PM   #24
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Today, my K20D came back from the repair service.

Neatly packed and there was a note which mentioned

Details of work carried out
- General inspection
- Regulate CCD (K20D???)
- Tests

Of course i took a couple photos with long shutter times (> 80 sec's ) to see the result of the work carried out. Here is one of them

http://farm4.static.flickr.com/3086/3241564077_7c320c11f3_o.jpg

What would you do in this case?

grtz,
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01-31-2009, 04:54 PM   #25
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QuoteOriginally posted by rverhag Quote
Today, my K20D came back from the repair service.

Neatly packed and there was a note which mentioned

Details of work carried out
- General inspection
- Regulate CCD (K20D???)
- Tests

Of course i took a couple photos with long shutter times (> 80 sec's ) to see the result of the work carried out. Here is one of them

http://farm4.static.flickr.com/3086/3241564077_7c320c11f3_o.jpg

What would you do in this case?

grtz,
Ronald
How long was that exposure?
Looks to me like 1)that's probably an issue "normal" testing won't find 2)Partially explains why "dark frame subtraction" is not allowed to be shut off. 3)The camera is bad at long time exposures due to an engineering issue....
01-31-2009, 10:53 PM   #26
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Ambient temperature - and thus sensor temperature once acclimatized - may have a lot to do with striping/banding problems. I took a 20 minute star trail exposure last weekend at -25C and it came out clean at ISO 100.

Jack
01-31-2009, 11:15 PM   #27
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QuoteOriginally posted by rverhag Quote
Today, my K20D came back from the repair service.

Neatly packed and there was a note which mentioned

Details of work carried out
- General inspection
- Regulate CCD (K20D???)
- Tests

Of course i took a couple photos with long shutter times (> 80 sec's ) to see the result of the work carried out. Here is one of them

http://farm4.static.flickr.com/3086/3241564077_7c320c11f3_o.jpg

What would you do in this case?

grtz,
Ronald
If you have ruled out a faulty card reader and/or card then I would send it back with a CD with the picture(s) and a note explaining the circumstances.
02-01-2009, 12:02 AM   #28
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Just a reminder in case you haven't done this yet, but formatting the card via the in-camera menu function versus formatting externally is the recommended procedure.

Jack
02-01-2009, 12:26 AM   #29
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look at this picture. Almost an identical problem, I got that body replaced though.
The picture was taken in the middle of the summer, temeperatur around 20 C.
But isnīt it strange with almost the same size of the stripe to the left??

02-01-2009, 02:15 AM   #30
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@jeffkrol
- 82 sec.
1) For me that's "normal" testing because i like the star-trail photos'
2) DFS was on (not auto)
3) I agree

@jbinpq
- I took 5 of these (different WB, diafragma). all the same.
- I did format the card via the camera

@Ole
Yep, I did that the first time but i think i'll have to do that again.

@ debbie
I agree. I think that's the same problem. That body was replaced? So there's hope for me ;-)
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