Bob, What's an OCD? And...... Is it OK to touch the mirror when doing this?
Don (Running and ducking!) > -----Original Message----- > From: Bob Blakely [mailto:[EMAIL PROTECTED] > Sent: Monday, November 22, 2004 7:14 PM > To: [EMAIL PROTECTED] > Subject: Re: cleaning focusing screen / pentaprism > > > Bob's OCD recommendations for cleaning bottom of MX pentaprism, > screen, and > mirror box: > > 1. Wash your hands. You're not a good OC if you don't. > 2. DO NOT TOUCH THE MIRROR! It's a first surface mirror (Al is on top) > and can be easily ruined. > 3. Remove screen using proper tool, carefully bent tweezers can work, > grip tab only, place in proper holder (grips only edges). > 4. Turn the camera upside down and LIGHTLY blow particles off > mirror with > *light* compressed air. (I use purified, dry CO2). Do not blow > directly on > foam. DO NOT TOUCH THE MIRROR! > 5. Hold a small piece of paper in front of mirror to protect it and to > hold screen holder out of the way and blow particles off bottom of > pentaprism with *light power* clean compressed air. DO NOT TOUCH > THE MIRROR! > 6. Wind a piece of professional lens cleaning tissue on a > toothpick, add > small drop of cleaning fluid and clean the underside of the > pentaprism using > the same method you would for a lens (circle of very small circles from > center out.) Do not let wood scrape glass coating. DO NOT TOUCH > THE MIRROR! > 7. Hold a small piece of paper in front of mirror to protect > it and dry > and blow any tissue threads off with *light* compressed air. DO NOT TOUCH > THE MIRROR! > 8. Turn the camera upright. > 9. Pick up screen by *edges only* and blow moderate power clean > compressed air over both dry sides. > 10. Add a drop of dishwashing detergent to a bowl of distilled water, > mix, and place the screen in the water to soak for a few minutes. If you > have an ultrasonic cleaner, this is where you use it. otherwise swish it > around. Rinse several times in distilled water and blow dry with > compressed > air. > 11. Replace screen. > 12. Attach short cable release, set MX to "B", lock shutter open using > cable release. This locks the mirror up to get it out of the way and to > protect it, protect the foam and open the shutter to protect it. > Blast the > crap out of the inside, be careful of any foam. > 13. Release the shutter and close up the camera. > > If the mirror has crap on it that does no blow off, DO NOT TOUCH > THE MIRROR! > Take it to a professional who will replace the mirror if he ruins it. > > Regards, > Bob...
