Pentax AF Focusing Screen


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GTRen

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Dec 18, 2004
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#1
Hi,

does anyone know where to get the focusing screen for the ist ds. I split some solvent on it while cleaning the mirror and now its smudged.

any advice much appreciated.
 

whoelse

Senior Member
Oct 17, 2003
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#2
solvent on cleaning the mirror --> No No...
 

Heretix

New Member
Feb 4, 2004
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#3
Actually, I have a similar query too. Does anyone know where we can get these screens in Singapore?

#38571 LF-60 AF Frame Matte
#38572 LL-60 AF Divided Matte
#38573 LI-60 AF Scale Matte

Whenever I look at the viewfinder of my Pentax MX, I feel like crying... the difference between the DSLR viewfinders and the film SLR viewfinders are like night and day (literally). One thing I would LOVE to have, is to at least have a better focusing screen to help in manual focusing (since most of my lenses are MF).

Anyone has any idea where to get these?

Cheers!
 

fengwei

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Aug 25, 2004
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#5
Heretix said:
Actually, I have a similar query too. Does anyone know where we can get these screens in Singapore?

#38571 LF-60 AF Frame Matte
#38572 LL-60 AF Divided Matte
#38573 LI-60 AF Scale Matte

Whenever I look at the viewfinder of my Pentax MX, I feel like crying... the difference between the DSLR viewfinders and the film SLR viewfinders are like night and day (literally). One thing I would LOVE to have, is to at least have a better focusing screen to help in manual focusing (since most of my lenses are MF).

Anyone has any idea where to get these?

Cheers!
You might try to get some spoiled camera body and swap the good focus screen with it :)

Just need to find the right one.

I have a spoiled SF1, don't konw if its focus screen is compatable with yours though. It seems in great condition.

Good luck!
 

kelvinang

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Mar 16, 2002
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#6
Heretix said:
Actually, I have a similar query too. Does anyone know where we can get these screens in Singapore?

#38571 LF-60 AF Frame Matte
#38572 LL-60 AF Divided Matte
#38573 LI-60 AF Scale Matte

Whenever I look at the viewfinder of my Pentax MX, I feel like crying... the difference between the DSLR viewfinders and the film SLR viewfinders are like night and day (literally). One thing I would LOVE to have, is to at least have a better focusing screen to help in manual focusing (since most of my lenses are MF).

Anyone has any idea where to get these?

Cheers!
These manufacturers will probably think it's a waste of time to design a big, bright viewfinder with good focusing screens (read: expensive!) for its DSLRs where 99% of its users will never use manual focus. In fact I'm surprised the *ist DS comes with interchangable screens. But interestingly, Pentax doesn't offer a split-image/microprism screen for the *ist DS...

I don't think any of the old Pentax camera's screen will fit in the new DSLRs. Even if you cut it down to size, it may not be correctly calibrated for accurate focusing, and it will most likely screw up your metering due to the difference in brightness (exposure sensors are located within the viewfinder).

Sidetracking - my autofocus MZ-3 is fitted with a split-image with microprism collar focusing screen taken from a manual focus MZ-M. It fits perfectly because the 2 essentially have the same size viewfinder and takes the same size screens. I don't even have to do exposure compensation. Pentax designed such a screen because the MZ-M is a pure manual focus camera despite the electronics. Lucky me!
 

Heretix

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Feb 4, 2004
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#7
kelvinang said:
But interestingly, Pentax doesn't offer a split-image/microprism screen for the *ist DS...
Yep, and from what i've read from other forums where users have emailed or asked Pentax staff in real life, the reply they've got is that the old split-image focusing screens that we know and love from the film SLRs cannot be implemented on the *istD/S/L as it interferes with the AE. :/

kelvinang said:
I don't think any of the old Pentax camera's screen will fit in the new DSLRs. Even if you cut it down to size, it may not be correctly calibrated for accurate focusing, and it will most likely screw up your metering due to the difference in brightness (exposure sensors are located within the viewfinder).
Yep, that's true too... though i've *heard* rumors of some German guy on the Internet who's selling a modification that does this...
 

Heretix

New Member
Feb 4, 2004
128
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Singapore - East
#8
Heretix said:
Actually, I have a similar query too. Does anyone know where we can get these screens in Singapore?

#38571 LF-60 AF Frame Matte
#38572 LL-60 AF Divided Matte
#38573 LI-60 AF Scale Matte
Hmm, come to think of it, I have no idea how these 3 look like in the viewfinder either... anyone has any idea? Does it look barely like the split-image one that I have in the MX?
 

kelvinang

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Mar 16, 2002
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Singapore
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#9
Heretix said:
Yep, and from what i've read from other forums where users have emailed or asked Pentax staff in real life, the reply they've got is that the old split-image focusing screens that we know and love from the film SLRs cannot be implemented on the *istD/S/L as it interferes with the AE. :/
That was what I found out too when I was researching on fitting the MZ-M screen onto my MZ-3 (so I can use the split-image screen for better manual focusing). Apparently, spot metering may be affected. I decided to give it a try and ordered the MZ-M focusing screen as a replacement part. At most I would lose $20...

From my own non-scientific tests, everything appears to be fine! Comparing the meter readings with the same lens on different bodies, the retrofitted MZ-3 performs accurately in spot metering and centre-weighted metering. Multi-segment metering differs slightly in some conditions but I attribute that to the different logic in use by different cameras.

And I'm not a spot metering person, so even if my MZ-3 does spot meters slightly off, it doesn't really affect me much.
 

GTRen

New Member
Dec 18, 2004
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#10
thanks for the advice. tried J&J but wasnt much help. In the end, i ordered it from Pentax US and got a friend to bring it back for me. Cost about US$68.
 

fengwei

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Aug 25, 2004
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#11
GTRen said:
thanks for the advice. tried J&J but wasnt much help. In the end, i ordered it from Pentax US and got a friend to bring it back for me. Cost about US$68.
Oh man, that's expensive :confused: Glad you got your Ds working again.

And thanks for sharing the info.

Cheers!
 

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