K10D Mirror Slow to raise

aleonx3 · 06-28-2009, 02:56 PM

Hi, George,

The mirror fell off the k10D during my last trip to Asia. Lucky I brought my backup K100D with me. The k10D was repaired before I went on vacation for mirror seating mechanism. It was quite possible that the mirror was not glued back on securely. Anyway, it gave a funny sound when I was in the middle of a shot - something came off inside and when I took the lens off the mirror came off the seating.

The k10D is now repaired and since it was still under warranty, there is no charge. The actuation count is about 27000.

The reason for the first repair was the mirror seating need adjustment. I had both the k10D and the DA* 16-50mm in for exposure problem.

sebberry · 06-28-2009, 03:04 PM

Is there a particular reason for shutters in DSLRs? Wouldn't the design be a little more reliable if the shutter was done digitally or is there some reason that you can only achieve certain photographic results with a physical shutter?

Andi Lo · 06-28-2009, 03:30 PM

Originally posted by pop4

Yes, dSLRs do. Most compacts don't, but then again, they don't have mirrors either.

The order from front to back goes lens, mirror, shutter (front and back curtains) and then sensor.
Here's a good link to see how it works: Jeffrey Friedl’s Blog Blog Archive Nikon D3 Shutter Release in Super Slow Motion

Great link... thanks for sharing

Originally posted by sebberry

Is there a particular reason for shutters in DSLRs? Wouldn't the design be a little more reliable if the shutter was done digitally or is there some reason that you can only achieve certain photographic results with a physical shutter?

Basing it on the video posted above, I can imagine if there's no shutter (by that I assume you mean the curtains), there will be wayyy more dust on the sensor. It's bad enough as it is I'd say.

Duck Dodgers · 06-29-2009, 06:11 AM

Just for fun, you might give this page a gander...

You already own a shutter tester

**Lowell Goudge** · 06-29-2009, 09:39 AM

Originally posted by Duck Dodgers

Just for fun, you might give this page a gander...

You already own a shutter tester

but where can I get a CRT

? It does, however give some intersting ideas on comparative shutter performance, slit width, and traversing speed, as a function of camera and shutter type.

Seriously though, my K10D has gone back to pentax for repair. so I am now left with only the *istD for the moment, and a real serious thought about getting the K7

06-28-2009, 02:56 PM	#16
aleonx3 Veteran Member Join Date: Jul 2007 Location: Brampton, Ontario Photos: Gallery \| Albums Posts: 3,996	mirror fell off on my k10D Hi, George, The mirror fell off the k10D during my last trip to Asia. Lucky I brought my backup K100D with me. The k10D was repaired before I went on vacation for mirror seating mechanism. It was quite possible that the mirror was not glued back on securely. Anyway, it gave a funny sound when I was in the middle of a shot - something came off inside and when I took the lens off the mirror came off the seating. The k10D is now repaired and since it was still under warranty, there is no charge. The actuation count is about 27000. The reason for the first repair was the mirror seating need adjustment. I had both the k10D and the DA* 16-50mm in for exposure problem.

06-29-2009, 09:39 AM	#20
Lowell Goudge Site Supporter Join Date: Jan 2007 Location: Toronto Photos: Gallery \| Albums Posts: 17,886 Original Poster	Originally posted by Duck Dodgers Just for fun, you might give this page a gander... You already own a shutter tester but where can I get a CRT? It does, however give some intersting ideas on comparative shutter performance, slit width, and traversing speed, as a function of camera and shutter type. Seriously though, my K10D has gone back to pentax for repair. so I am now left with only the *istD for the moment, and a real serious thought about getting the K7

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06-28-2009, 03:04 PM	#17
sebberry Pentaxian Join Date: Jan 2009 Location: Frozen white North Photos: Albums Posts: 1,135	Is there a particular reason for shutters in DSLRs? Wouldn't the design be a little more reliable if the shutter was done digitally or is there some reason that you can only achieve certain photographic results with a physical shutter?

06-28-2009, 03:30 PM	#18
Andi Lo Veteran Member Join Date: Jul 2008 Location: Halifax, Nova Scotia Posts: 2,924	Originally posted by pop4 Yes, dSLRs do. Most compacts don't, but then again, they don't have mirrors either. The order from front to back goes lens, mirror, shutter (front and back curtains) and then sensor. Here's a good link to see how it works: Jeffrey Friedl’s Blog Blog Archive Nikon D3 Shutter Release in Super Slow Motion Great link... thanks for sharing Originally posted by sebberry Is there a particular reason for shutters in DSLRs? Wouldn't the design be a little more reliable if the shutter was done digitally or is there some reason that you can only achieve certain photographic results with a physical shutter? Basing it on the video posted above, I can imagine if there's no shutter (by that I assume you mean the curtains), there will be wayyy more dust on the sensor. It's bad enough as it is I'd say.

06-29-2009, 06:11 AM	#19
Duck Dodgers Veteran Member Join Date: Dec 2007 Location: in the 24½th Century! Photos: Gallery Posts: 439	Just for fun, you might give this page a gander... You already own a shutter tester

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