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**dkpentax** · 09-22-2022, 07:56 PM - **2 Likes**

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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pschlute · 09-22-2022, 08:09 PM

I had no idea there was such a thing. Very cool.

garywakeling · 09-23-2022, 12:49 AM

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

kypfer · 09-23-2022, 12:55 AM

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

Not a Number · 09-23-2022, 12:56 AM - **1 Like**

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.

Lord Lucan · 09-23-2022, 01:48 AM

Originally posted by garywakeling

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?

garywakeling · 09-23-2022, 02:29 AM

Originally posted by Lord Lucan

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

bdery · 09-23-2022, 05:08 AM

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.

**Roam Redway** · 09-23-2022, 09:21 AM

Now I want one! (I have both the 080c and the 160c and a lens reversing adapter).

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09-22-2022, 08:09 PM	#2
pschlute Moderator Loyal Site Supporter Join Date: Mar 2007 Location: Surrey, UK Photos: Gallery Posts: 8,219	I had no idea there was such a thing. Very cool.

09-23-2022, 12:49 AM	#3
garywakeling Moderator Join Date: Jul 2011 Location: Melbourne Photos: Gallery \| Albums Posts: 1,774	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

09-23-2022, 12:55 AM	#4
kypfer Pentaxian Join Date: Jan 2018 Location: Jersey C.I. Posts: 3,600	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

09-23-2022, 12:56 AM - 1 Like	#5
Not a Number Moderator Join Date: Mar 2012 Location: Venice, CA Posts: 10,526	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.

09-23-2022, 01:48 AM	#6
Lord Lucan Pentaxian Join Date: Sep 2017 Location: South Wales Photos: Gallery Posts: 2,979	Originally posted by garywakeling 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?

09-23-2022, 02:29 AM	#7
garywakeling Moderator Join Date: Jul 2011 Location: Melbourne Photos: Gallery \| Albums Posts: 1,774	Originally posted by Lord Lucan 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

09-23-2022, 05:08 AM	#8
bdery Pentaxian Join Date: Mar 2008 Location: Quebec city, Canada Photos: Gallery Posts: 9,363	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.

09-23-2022, 09:21 AM	#9
Roam Redway Loyal Site Supporter Join Date: Nov 2018 Location: California's Gold Country Posts: 98	Now I want one! (I have both the 080c and the 160c and a lens reversing adapter).

Pentax Reverse Ring Light Holder K located

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