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10-27-2012, 10:56 AM   #1
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Hood for 01 lens

I have a simple question.

Pentax makes a hood for the 01 prime lens that covers part of the lens opening and has a smaller opening with a screw in lens cap.

Pentax MH-RA40.5

What is the diameter of the screw in cap for this unique hood?

Thanks

10-27-2012, 11:26 AM   #2
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Hi GXRUser,

I don't have the Pentax hood, but have the JCC which is, as far as I can tell the same. On this hood, the screw diameter is 25mm (eyeballed, can't find my caliper).

Scott
10-28-2012, 01:20 PM   #3
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I have the Pentax version. It's 25mm, as reported above.
11-10-2012, 03:23 PM   #4
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Thanks. I just got the JJC replacement for the MH-RA40.5 and the screw in cap is a pain. Ordered 2x25mm pinch caps for $2.49 total that should make it much easier.

11-10-2012, 08:08 PM   #5
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I made one using a Urine specimen canister some Electrical tape and some black bristol board lol fits perfect. No one takes the camera serious anyway....You ask why do I have urine specimen canisters kicking around???...well the specimen caps make excellent K mount endcaps for when I am waiting for my new ones to come in the mail of course. They are unused ..don't tell my family doctor.
How I did it: cut off container top -bristol board taped on and electric tape applied to inside of container but not where the container slides over lens

Last edited by Sliver-Surfer; 06-27-2015 at 01:30 PM.
11-19-2012, 09:55 AM   #6
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I just received, direct from China, two 25mm squeeze caps for the JJC replacement for the MH-RA40.5 and its screw in cap. I have already put one on the Q and it fits perfectly.


New 2 x 25mm Snap on Front Camera Lens Cap for Canon Nikon Sony Pentax Lens | eBay
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