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I'm a bit of a collimation heretic. Never found the burning need to collimate the 8" F6 very often at all. Maybe I'm just lucky, or just not as fussy as some. (Admittedly, I never transport it very far.) Anyway, since I'm temporarily babysitting an 8" F4 I thought I'd better invest in the Andrews Cheshire (I was ordering some other stuff anyway). Well, it does a reasonable job, but frankly I don't find it any better than the old dismembered film canister with a 2 mm hole in the lid that I was using previously. I guess it depends on what $29 means to some people, but it costs nothing to try the film canister first (most camera stores give them away)...
(If I were to do it again I might go the whole hog and get the laser version.)
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