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4 Days Ago - 2 Likes   #1
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Pentax Reverse Ring Light Holder K located

For the obsessive-compulsive Pentax collector:

Lucked into this in the box with instructions. If you have never heard of this, it was made for attaching a ring flash to the back of a reverse-mounted lens. My copy has instructions printed 3/1982, and demonstrates using the AF080C ring flash. I haven't tried to check if it works with their very last ring flash, the AF160FC, thats for later.

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4 Days Ago   #2
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I had no idea there was such a thing. Very cool.
4 Days Ago   #3
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Thanks for posting the instructions, I have one but have not seen the instructions before. Yes it does work with the af160fc except that without the electronics it behaves by giving full power flash as the auto settings cannot read the lens info when reversed. Otherwise it just protects the aperture lever and give you a 49mm filter ring to screw any of the ring flashes in to. Nice find
4 Days Ago   #4
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I've got an after-market version for M42 lenses … found it in a "bargain-bin" many years ago … not sure I've ever used it, but it might be useful one day

4 Days Ago - 1 Like   #5
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Quite a find, such a rarity. Make a good quality scan of the instructions and see about having a copy put up on pentax-manuals.com for posterity's sake.
4 Days Ago   #6
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QuoteOriginally posted by garywakeling Quote
it does work with the af160fc except that without the electronics it behaves by giving full power flash as the auto settings cannot read the lens info when reversed
You must still be able use the reduced manual levels? Otherwise, the limitations are no different from the AF080C surely?
4 Days Ago   #7
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QuoteOriginally posted by Lord Lucan Quote
You must still be able use the reduced manual levels? Otherwise, the limitations are no different from the AF080C surely?
It is really lens dependent, an aperture ring on the older macro lenses make is much easier, however any of the newer lenses apertures are electronically controlled but don't work in reverse as well as the older lenses. The PTTL has limited manual exposure options down to 1/16th power and only gives full power on any of the auto settings, generally overexposing the subject even if -5 stops is dialled in on the body exposure

4 Days Ago   #8
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Didn't know such a thing existed.

In essence, it's a machined piece of metal, it wouldn't be hard to machine or 3D print something like that today with the right information for dimensions.
4 Days Ago   #9
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Now I want one! (I have both the 080c and the 160c and a lens reversing adapter).
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