Matter of fact, intelligent and told me like it was. Being busy, I tried not to take up to much of Mark's time or over-explain the problem. He knew right away at least three potential solutions to my Pentax (the split-ring was not accurate). When I dropped it off, he could only talk a few minutes, but when it was repaired we talked for a while and he gave me some very good advice. I'm telling my other astro-photography friends that still do film. Reasonable price, also.? On Aug 1, 2010
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