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04-21-2011, 06:51 PM   #1
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Measurement needed

I am looking for the distance that the built-in flash overhangs the base of the lens on a K5/K7. Measuring in profile the distance from the lens mount to the tip of the flash (where the word PENTAX is printed) on a K20D is about 19mm.

Could one of you fortunate K5 owners measure this distance and report back please?

The reason I ask is that this overhang limits the ability of some of my older lenses to rotate 90 degrees on their tripod mounts.

Thanks

04-21-2011, 08:08 PM   #2
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On my K-7, with a Tamron 90mm SP macro mounted, the distance from the top of the lens to bottom of the word PENTX is:
* 11 mm with built-in flash closed.

The distance from the top of the lens to the bottom of the in-built-flash glass is:
* 52 mm with in-buil flash deployed.

Hope that the info will help.
04-21-2011, 08:19 PM   #3
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Thanks HCC!
04-21-2011, 08:26 PM   #4
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Now that I tink about HCC's answer I think I was misunderstood. To claify, what I am looking for is the distance the flash housing overhangs the lens.

If looking down on the top of the camera how far is the flash enclosure extending past the base of the lens (lens mount)?

04-21-2011, 11:31 PM   #5
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Allowing for sighting errors, around 10mm. Could it really be half the distance of a K20D? Hmm. Looking down vertically with a steel rule butting agains the lens mount and sticking out along the axis of the lens. Yup. The steel rule starts at zero, so I didn't make that mistake

Richard.
04-22-2011, 04:33 AM   #6
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QuoteOriginally posted by Hornet Quote
Now that I tink about HCC's answer I think I was misunderstood. To claify, what I am looking for is the distance the flash housing overhangs the lens.

If looking down on the top of the camera how far is the flash enclosure extending past the base of the lens (lens mount)?

Precisely 8mm
04-22-2011, 06:06 AM   #7
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QuoteOriginally posted by Schraubstock Quote
Precisely 8mm
I agree, it is 8mm. The link below has the full-size image, reduced-size image in my comment:

K-7 Flash Overhang is 8mm | Flickr - Photo Sharing!


Last edited by HEEGZ; 04-22-2011 at 06:06 AM. Reason: adding hyphens - -
04-22-2011, 08:46 AM   #8
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QuoteOriginally posted by Hornet Quote

Could one of you fortunate K5 owners measure this distance and report back please?
Just checked on my K-5. It's exactly 8mm.

04-22-2011, 08:48 AM   #9
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Thanks everyone! Looks like a K5 will work out perfectly for me!
04-22-2011, 12:19 PM   #10
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Good to hear someone is happy with 8mm!

QuoteOriginally posted by Hornet Quote
Thanks everyone! Looks like a K5 will work out perfectly for me!
Come on, that is one of the stranger criteria I've seen for choosing the K-5. You can't leave this thread at that. You do know the form factor is no different to the K-7?
04-22-2011, 12:25 PM   #11
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QuoteOriginally posted by Col Quote
Come on, that is one of the stranger criteria I've seen for choosing the K-5. You can't leave this thread at that. You do know the form factor is no different to the K-7?
I originally thought the same thing until I read the last sentence of his first comment. He wants to be able to turn his old lenses 90 degrees on their tripod mounts. Those tripods must be awfully close to the lens mount...
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