Pentax digital light meter cap size?

Hi,

Saw on ebay a pentax digital light meter without a cap. Wondering if anyone

know what the cap size is for this meter?

Thanks!

I just measured mine and it looks like 45mm. I remember when Fred Picker was

advocating the use of the pentax spot meter he recommended that the first thing you do

is take the cap off and throw it away. A bit tounge in cheek no doubt but I pretty much

agree with him that the cap isn't really necessary. I tossed mine in a drawer about 10

years ago and there it sits.

Dennis

Cap? There was a cap?!? No wonder it always seemed so dark looking through the meter

:-)

I carry my meter in an old Zone VI leather belt holster, and haven't seen the cap in years.

Just keep the greasy thumbprints off the lens and it will be fine. My Mitutoyo vernier

caliper said the outer diameter of mine was 1.741 inches, so a 45mm press-on cap

sounds right. The eyepiece didn't have a cap, and that's where I find the crap

accumulating - skin flakes, stray eyelashes, etc. Mostly you just don't want the big lens to

get dirty and cause sufficient flare (or loss of light) that might throw off your reading. The

inside of the front rim is threaded, so maybe a 41 or 42mm UV filter would also do for

protection if one thought it necessary. My old Nikon 43mm filters are definitely too big,

but not much.

Don't know if this is helpful or not... The original post didn't specify which pentax digital spot meter he was asking about. I use the "newest" version of it.

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The filter that it takes is a 40.5mm. I have the lens cap that came with it and does not have a size printed on it. A quick measure of it shows a 43mm-44mm diameter. (it's kinda beat up).

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Looks like this:

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