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Forum: Film SLRs and Compact Film Cameras
03-02-2011, 06:53 PM
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Silver Oxide cells type SR44, EPX76, V76PX, B-SR444, will all work.
At least one of these should be available at your local "Battery Bar" or "Battery World" (or equivalent), and be an exact fit. :)
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Forum: Lens Clubs
02-24-2011, 05:27 PM
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From first principles:
From the manufacturer's specifications*, the Raynox dcr250 is an 8 diopter "enlarging" lens.
So, it has a focal length of 1,000/8 = 125mm 12.5cm or about 5 inches).
If attached to a prime lens (any prime lens) set to "infinity", then the working distance should be about 5 inches (the same as the focal length of the accessory close-up lens).
In the case of a "full frame" sensor, magnification should be:
Focal length of prime lens x diopter strength of attached accessory lens/1,000
=(in this case) 200 x 8/1,000 = 1.6 times (or 1.6:1).
Quite impressive :)
Should the prime lens be extended (using its helical), the magnification will be increased, and the working distance reduced.
(In either case, the depth of field will be very limited -as can be seen- and there will be some image degradation, especially towards the edges.)
* http://www.raynox.co.jp/english/dcr/dcr250/indexdcr250eg.htm |
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Forum: Film SLRs and Compact Film Cameras
01-26-2011, 05:40 PM
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Go to a newsagency and look in the felt pen section for a black felt-tipped marker pen.
If possible, get one that actually contains a type of paint (even better), but any kind will "do".
Another source is one of the shops that caters for modellers: they have all kinds of enamels that will stick to anything, in small containers (even spray cans).
Just touch up the "dings" and it will all be as good as new. :)
(I have often used a black felt-tipped marker pen to tidy up dings and wear-marks on manual lenses, camera bodies and lens-hoods: it works! :))
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Forum: Film SLRs and Compact Film Cameras
09-20-2010, 06:53 PM
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Personally, though I do have some of each, I prefer the "chrome" finish: it is much harder wearing than the black.:)
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