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01-26-2010, 07:24 PM   #1
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K7 Screen Shims

Hi gang;
Can anyone tell me the part numbers for the focusing screen shim kits for the K7?

thanks

01-26-2010, 07:39 PM   #2
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I'd love to know as well. My screen seems to be just a bit off. It makes me front focus unless I intentionally focus past where it snaps in just a tad. Most noticeable with my 50mm F1.2 but also with 85mm F1.8. It would be great to be able to not have to guess and compensate in this manner and get my focusing screen in the right spot.
02-03-2010, 05:29 PM   #3
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QuoteOriginally posted by arpaagent Quote
I'd love to know as well. My screen seems to be just a bit off. It makes me front focus unless I intentionally focus past where it snaps in just a tad. Most noticeable with my 50mm F1.2 but also with 85mm F1.8. It would be great to be able to not have to guess and compensate in this manner and get my focusing screen in the right spot.
Can I add my voice to this? See my thread on DPR. Exactly the same symptom with a focusingscreen.com screen. Not massively off, but front focuses just enough to screw up an f1.2 shot completely unless you consciously compensate.
02-03-2010, 08:59 PM   #4
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I had similar problems with my Katz Eye on a k20d.

I emailed them and Rachel replied:

"The manual focus calibration is corrected by changing shims, as you have
already found. The shims come in a variety of thicknesses and are available
directly from your local Pentax dealer. The part numbers are as follows:

76830.M02200A - 0.15mm
76830.M02200B - 0.20mm
76830.M02200C - 0.25mm
76830.M02200D - 0.30mm
76830.M02200E - 0.35mm
76830.M02200F - 0.40mm

The 0.25mm and 0.30mm are the ones most commonly supplied with the camera.
A front focus condition will require a thinner shim, as you have observed in
your test without any shim at all. The parts are very inexpensive (less
than $1 each), so it is probably best to just order one of each... or at
least the ones from 0.15mm to 0.30mm. "

Now these part numbers are for a k20d. I don't know if they will fit a K7. My manual focus tests did indeed confirm that my Katz Eye was a small amount off. After calibrating my autofocus lenses, I found the focus point in the viewfinder was slightly off. Replacing my factory 0.30mm shim with a 0.20mm shim resulted in the auto focus point matching the manual focus perfectly. This was critical for my manual focus lenses....

Check with customerservice@katzeyeoptics.com... Rachel may be able to help you with the K7 part numbers...

Hope this helps,

Dick

02-04-2010, 06:46 AM   #5
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Thanks Dick
I've made a couple of inquiries, I'll post what I find out.
02-04-2010, 05:07 PM   #6
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QuoteOriginally posted by Dickl Quote
I had similar problems with my Katz Eye on a k20d.

I emailed them and Rachel replied:

"The manual focus calibration is corrected by changing shims, as you have
already found. The shims come in a variety of thicknesses and are available
directly from your local Pentax dealer. ..."
My local Pentax service guy has ordered a K-7 set for me (and also a K10D set for good measure). They'll take a while to get here but I'll report back in a month or two.

Tim
03-14-2010, 09:30 AM   #7
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Success!!!
My pusher ordered me a complete set of shims.
The ever helpful Rachel Katz from Katz Eye Optics was kind enough to send me the part numbers.
They are as follows:

77240.M02200A - 0.15mm
77240.M02200B - 0.20mm
77240.M02200C - 0.25mm
77240.M02200D - 0.30mm
77240.M02200E - 0.35mm
77240.M02200F - 0.40mm
77240.M02200G - 0.45mm
77240.M02200H - 0.50mm
77240.M02200I - 0.55mm

The cost per shim in Canada is ~$3.00 each, so they aren't terribly expensive.

Rachel said that the .40mm shim was the default one and that it wasn't uncommon to need a thinner one, and she was quite right. I could have saved myself a few dollars by not ordering the .40mm shim.
As an aside, the packaging from Pentax Canada was atrociously inadequate and a couple of the shims were warped in transit, rendering them unusable.
After a bit of trial and error, I settled on the .25mm shim as being the best one in my application.
I used the 55/1.4 as my test bed lens, and just focused on the mat edge of a picture across the room for a test subject.
08-06-2010, 01:45 AM   #8
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Recently decided to change the shim to, because i have the A50 1,2 wich made the front focus come visible.

I ordered 0.10mm, 0.20mm and 0,30mm.

I should have checked the shim in the camera first, as it turned out to be a 0.25mm

So i ended up with no shim at all, taking the front focus foward just a tad. Its not enough though, but really good eough for me.

Its closer to the hexagon confirmation now. If i focus out from the confirmtion i have focus just as the hexagon turns of.

Can also report that its very easy to change them, and very easy to scratch the matte screen, an very easy to get dust under the VF (above matte screen)

08-06-2010, 02:54 AM   #9
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Well, in France, they are running at 4.90€ each!!!

"Milking cow" is another word for "Frenchy"
08-07-2010, 02:59 PM   #10
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QuoteOriginally posted by dlacouture Quote
Well, in France, they are running at 4.90 each!!!

"Milking cow" is another word for "Frenchy"


I got three for 8 euros incl shipping (just plain mail)
09-10-2010, 06:50 AM   #11
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QuoteOriginally posted by Wheatfield Quote
Success!!!


The cost per shim in Canada is ~$3.00 each, so they aren't terribly expensive.
When you buy you shims from Pentax - which dealer? Or is it some "central facility" for the North America?

The dealer in my country is being less than helpful... They just replied "we don't have the shims you want". Nothing more, nothing less.

The repair shop in the UK just said "we are just the UK service, don't do international". Which demonstrates the seriously lacking cognitive abilities of staff at Johnsons Photopia - so as to avoid using openly offensive words... I am so angry.

Maybe someone could share a link with me of a reliable supplier of Pentax genuine parts, so, maybe, I could persuade them to mail internationally?

K-x shims part numbers (from ever helpful Rachael at Katz Eyes)


76570.M02200A - 0.15mm
76570.M02200B - 0.20mm
76570.M02200C - 0.25mm
76570.M02200D - 0.30mm
76570.M02200E - 0.35mm
76570.M02200F - 0.40mm

Last edited by Mikhail_Kriviniouk; 09-10-2010 at 07:24 AM. Reason: removed openly offensive wording addressed to Johnsons Photopia, the UK Pentax repair shop
09-10-2010, 07:35 AM   #12
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Looks like I'll buy them from Katz Eyes

L2 Adjustment Shims - KatzEye Optics

Staff at Pentax customer services is less than helpful all over the globe it seems.
09-10-2010, 08:30 AM   #13
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I ordered mine this week from Pentax North America. Took me a while to get through but finally did (parts department phone: 720.988.2653; kept getting the parts person, Lynn's voice mail and she didn't return my message) . Shims were $0.75 each, $8 (!) shipping.
09-10-2010, 10:21 AM   #14
wll
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??????

WHAT are shims, and where do they go ?


wll
09-10-2010, 04:03 PM   #15
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for the progress so far/part numbers etc see my thread on K-x shims https://www.pentaxforums.com/forums/pentax-dslr-discussion/114013-k-x-focusin...ml#post1174957
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