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11-30-2009, 05:11 PM   #31
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In past Pentax cameras with SR, I believe SR is disabled when flash is used.
On the K-7, just remember to switch off the SR to prevent any possible occurrence of a double image.


Last edited by creampuff; 11-30-2009 at 06:02 PM.
11-30-2009, 05:26 PM   #32
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QuoteOriginally posted by creampuff Quote
In past Pentax cameras with SR, SR is disabled when flash is used.
Not true for the K100D and I doubt it is true for other past Pentax cameras.

The K100D manual specifically mentions the "slow-synch" application where you want to have both (shake reduced) ambient light exposure + flash exposure.

Why are you referring to "double images" rather than "blurred images"?
11-30-2009, 06:16 PM   #33
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Class A, I was a K100D and K100D Super user so I am aware of slow speed sync which I have used quite a bit. Just that with the K-7, I've tried disabling SR with flash and it appears give a slightly sharper image.
11-30-2009, 06:21 PM   #34
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QuoteOriginally posted by creampuff Quote
In past Pentax cameras with SR, I believe SR is disabled when flash is used.
Only when wireless flash is used.

11-30-2009, 07:02 PM   #35
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Thanks for the correction.
11-30-2009, 11:46 PM   #36
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I've noticed the same problem w/ my K7 when using an external flash (sync speed at 1/180s). The results seem to have some overlapping instead of blurring problem Some friend also confirmed that even w/o a flash, the results might have some overlapping problem too if the shutter speed is somewhere between 1/160s to 1/180s, and this won't happen at higher or slower speed.

This should be addressed to Pentax so they can release a firmware to fix this problem. Otherwise we have to switch off SR everytime we use flash, or shoot at 1/160s to 1/180s shutter speed.
12-01-2009, 03:31 AM   #37
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well I won't post another image but the Mrs managed a whole heap of these today... s/speed was around 1/100-1/125th
10-01-2010, 10:40 AM   #38
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I just sent my K-7 in for service to deal with this blurring problem. I posted a thread about blurring with my K-7 and thought it was user error. Now after many more tests, I am narrowing my problem down to:
- Using hotshoe flash
- Flash used as fill flash so that the ambient lighting is enough to produce a reasonable exposure
- Freshly charged batteries!!
- At 1/125s exposure time, the blur is the worst (even with 50 to 70mm lens)

I noticed that the blurred images posted here have flash turned on. Also the amount of blur (that should be sharp with the 1/f rule) all have similar amount of blur regardless of the focal length.

Anybody interested trying this test? I am really interested in other people's results.

Eric

10-02-2010, 12:51 AM   #39
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My first K-7 used to have this issue randomly. The worst thing is it happened to me during one of my wedding assignment, and I've to do some serious post editing to save an important photo.

Anyway, I've send it in for repair, and got a new K-7 instead. So far 9 months later, I've not encounter this issue.

Make sure your service center do a good job.

Mike
10-04-2010, 08:53 PM   #40
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QuoteOriginally posted by mcjm78 Quote
Anyway, I've send it in for repair, and got a new K-7 instead. So far 9 months later, I've not encounter this issue.

Make sure your service center do a good job.

Mike
Mike, was your's still in warrantee? Did it go to Melb? Can't remember how old my K7 is.. must check!
10-05-2010, 09:30 AM   #41
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Yes, mine was shipped to Melb by CRK.

Try the latest K-7 firmware, if you check the in another threat. Maybe the "secret" updates fixes it.

Mike
10-06-2010, 02:38 AM   #42
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just updated it to the latest 'silent' version (1.10.20.26) and it's still there but only seems to occur when I use the flash (AF540FGZ) and is mostly visible with white objects on dark backgrounds. Didn't try using the inbuilt flash. Looks like I bought it on 17/10/09 so, can I find the receipt!!!!
10-06-2010, 03:03 AM   #43
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Here's a trick for the masses... keep your product boxes and keep your invoices in the box! Yippee! found it!
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