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04-22-2014, 09:13 AM   #1
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Scratched my focussing screen - help please!

Hi Guys,

As the title suggests I've managed to scratch my focussing screen on my K-3 - seems it occurred when I was being a bit too ham fisted with my rocket blower

Anyhow the scratch is really annoying me and I want it gone so I'm planning to replace the focussing screen with a genuine Pentax/Ricoh one.

Does anyone have any tips/a guide on how to replace it and anything I should watch out for? I've read I need to do it in a dust free environment but that's not really going to be possible! I guess just wear rubber gloves and be very careful?

Cheers

Alex

04-22-2014, 09:20 AM   #2
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You can replace your focusing screen with the Pentax/Ricoh one (provided if you can get parts from Ricoh) or one of the Katz-eye variants. The DIY procedure is simple enough that you can find on the web.
04-22-2014, 09:28 AM   #3
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YouTube. If I were you I'd go for one from focusingscreens.com. Much friendlier w manual focus lens. Just make sure you mostly use fast lens. Otherwise those tend to get darker quicker past f2.8
04-22-2014, 09:31 AM   #4
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Quite simple to replace. I believe the OEM Ricoh/Pentax screen comes with a tool for undoing the clip and holding the screen by the tab. Otherwise any flat bladed forceps (tweezers) will do but I recommend covering the tips with something - thin plastic/silicone tubing or even plain old masking tape. It will give you better grip and lessen the chance of scratching the screen if you should slip.

04-22-2014, 09:52 AM   #5
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QuoteOriginally posted by oxidized Quote
YouTube. If I were you I'd go for one from focusingscreens.com. Much friendlier w manual focus lens. Just make sure you mostly use fast lens. Otherwise those tend to get darker quicker past f2.8
+1 .
04-22-2014, 10:18 AM   #6
maw
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Hi Alex,

I read, about your problem with the focusing screen, I loaded this guide, it is valid for the correct replacement in all Pentax models.

Hello Mario

Downloading: Focusing Screen Installation Guide.rar - Uploadingit
04-22-2014, 10:28 AM   #7
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Really irritating to have dust and scratches on the focusing screen. On my K-5 I accidentally put a thumb print when I was cleaning it. I was stupid and took a cloth, same as for the lens, and wiped it. BAD idea. It got scratched bad. So NEVER touch it whatever happens. I bought a new original.
04-22-2014, 12:01 PM   #8
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The how-to on the KatzEye site might be helpful. The new screen should ship with a tool.

http://www.katzeyeoptics.com/files/install_11.pdf


Steve

04-22-2014, 01:42 PM   #9
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Original Poster
Nice one guys - thanks for the tips I plan to order a genuine Ricoh one and replace - will let you know how it goes.

@oxidized I was planning on getting one from there but then I realised this would probably invalidate my warranty so sticking with genuine Ricoh for now.

Cheers

Alex
04-22-2014, 10:01 PM   #10
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Thanks everyone too. Today I took pictures of our beautiful bluebonnets in Ennis, Texas and during the middle of the shoot I saw a fiber hair in my viewfinder. I was wondering how I would get rid of it. A simple rocket blower blow got it out! How in the world would SharePoint scratch his focusing screen with a rocket blower, I will never know!?
04-23-2014, 09:05 AM   #11
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QuoteOriginally posted by gosman Quote
Thanks everyone too. Today I took pictures of our beautiful bluebonnets in Ennis, Texas and during the middle of the shoot I saw a fiber hair in my viewfinder. I was wondering how I would get rid of it. A simple rocket blower blow got it out! How in the world would SharePoint scratch his focusing screen with a rocket blower, I will never know!?
First of all my name is not 'SharePoint', my username is sharepointalex and my name is Alex. Secondly what I think caused the scratch was a bit of sand as I've been travelling with my camera in Australia and doing a lot of photography on the beach. I can only assume that a bit of sand got in there somehow and the rocket blower caused it to scratch the focussing screen.
04-23-2014, 05:05 PM   #12
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QuoteOriginally posted by gosman Quote
How in the world would SharePoint scratch his focusing screen with a rocket blower, I will never know!?
These things happen. Not all of us have robotic fine motor skills. I have never accidentally touched the surface of anything with my blower, but I have come very close.


Steve
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