Win a Pentax Limited Lens: Raffle Now Live!

**dcmsox2004** · 02-25-2009, 06:54 AM

Staff note: This post may contain affiliate links, which means Pentax Forums may earn a small commission if a visitor clicks through and makes a purchase. If you would like to support the forum directly, you may also make a donation here.

hi...
i pulled the trigger on buying this lens...
PENTAX-A 50mm 1.7 *CLONE FOR PENTAX FILM & DIGITAL CAMS - eBay (item 370164741317 end time Feb-25-09 05:50:33 PST)..
for 30 bucks, i could not control myself.....
i found few reviews of this lens, none though with what is
purported to state that this lens' p setting is the same/clone
to the pentax a setting.........
does anyone have any experience with this lens.....
compulsive dave........
also, i found this......... made my eyes spin counter clockwise...
can anyone really interpret this data into double digit iq language??
http://www.pbase.com/steephill/image/38667509

Jodokast96 · 02-25-2009, 06:59 AM

Did you even read the description before bidding?

Quote:

The P is equivalent to the A on the Pentax lens.

**dcmsox2004** · 02-25-2009, 07:03 AM

was that important?????
my wife always gets a chuckle that i never read instructions...
i figured i had a genetic predisposition to figure these thing out without
benefit of manuals....
i did read the listing .... unless i am more caffeine deprived than usual...
it appears to me that this is mountable (after pin removal) on my k200d...
for 30 bucks, if i am indeed asleep, what the heck...
and......
https://www.pentaxforums.com/userreviews/showproduct.php?product=435&cat=8

wlachan · 02-25-2009, 07:07 AM

The P setting is for Ricoh XR-P, and those subsequent models. It doesn't work on Pentax.

**dcmsox2004** · 02-25-2009, 07:14 AM

uh oh...... i've emailed the seller, noting that per the item description....
it should mount and work on my k200d body...
i will update asap..............
i just could'nt wait.......... at my age i thought i'd aquired a bit more patience....

Sila · 02-25-2009, 08:11 AM

Tagged.............

stevebrot · 02-25-2009, 08:49 AM

Originally posted by dcmsox2004

uh oh...... i've emailed the seller, noting that per the item description....
it should mount and work on my k200d body...
i will update asap..............
i just could'nt wait.......... at my age i thought i'd aquired a bit more patience....

You have been taken my friend.

The description is misleading and false. Rikenon-P is not equivalent to Pentax-A. The "P" setting on the lens is specific to Ricoh program cameras. On Pentax film bodies of the same vintage, functionality was limited to Av or manual modes.

DO NOT MOUNT THIS LENS ON YOUR CAMERA. IT WILL JAM ONTO THE MOUNT AND MAY REQUIRE PROFESSIONAL ASSISTANCE TO REMOVE!! The Rikenon-P lenses have a small pin that jams into the AF drive on your camera's mount. The lens may be modified, but will require partial disassembly.

I would ask to cancel the sale.

Steve

**dcmsox2004** · 02-25-2009, 08:54 AM

thanks steve... i did ask to cancel the sale... and i'm awaiting response from the seller..
i did ask (post sale, duh) if he had mounted this on a pentax digital body...
i'm curious, is this the same ricoh pin that has been discussed at length in the forum?
i've had some lenses that i have removed the offending pin and everything worked out aok..
i.e. sears 135mm f2.8, vivitar 75-300mm a setting....
dave m

Nesster · 02-25-2009, 08:58 AM

This is precisely that Ricoh pin, it came into being with Richoh "P"rogram cameras that use "P"rogram settings on the aperture ring.

**dcmsox2004** · 02-25-2009, 08:59 AM

can this pin be removed and the lens used ? with some automatic functionality ?
thanks... dave m

**Just1MoreDave** · 02-25-2009, 10:00 AM

Originally posted by dcmsox2004

can this pin be removed and the lens used ? with some automatic functionality ?
thanks... dave m

The pin can be removed or ground away without much trouble. I don't think the lens can ever have A lens functionality. It could be that no one has tried hard enough.

Rykoh · 02-25-2009, 10:10 AM

Originally posted by Just1MoreDave

The pin can be removed or ground away without much trouble. I don't think the lens can ever have A lens functionality. It could be that no one has tried hard enough.

I would think you could probably rig it, either by swapping a similarly-sized/shaped mount from an A-compatible lens (might give you a whole set of other problems though), or more likely by drilling and putting epoxy on the mount to match the proper A-lens pattern. I know somebody did this with a Rikenon XR 50/2 (non-P version), and while it functioned in AV mode, the exposure was off more and more as the lens stopped down, due to differences in how the aperture mechanism behaves between M/K-series lenses and A/FA/DA-series lenses. If I had to guess, I would say the P-series lenses also follow the same mechanism behavior as the A-series lenses (as there are third party lenses that can do both), in which case it would probably be possible to make it work. I've never tried to be honest. Ah, here's the thread I was thinking of:

https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/4893-replacing-lens-mounts.html

**dcmsox2004** · 02-25-2009, 10:45 AM

hi... thanks for the response(s), if the pin were to be removed, thus losing the 'a' lens functionality, then for my uses, it would not be what i wanted...
i just could have spent a few more $$ to get a pentax smc a 500mm 1.7 lens... but, duh,
i did'nt exercise my normal due diligence.... out of character for a character like me.......
live and learn, thanks to my fellow pentaxians............
still waiting for the seller to respond.... once i get my funds back, i'll go for the pentax a lens..
(or for that matter, anything BUT a ricoh rikenon 'p' lens...)

**dcmsox2004** · 02-26-2009, 06:24 AM

the seller refunded payment....
i gots to be more patient................
i've seen other similar lenses on ebay claiming they are compatible
with the pentax k mount... caveat emptor, let the buyer beware
thanks to my fellow pentaxians, i now know better...
to all , thanks !!

yyyzzz · 04-07-2009, 01:51 AM

I have this lens. It works fine on my K10d and my film pentaxes.

02-25-2009, 06:54 AM	#1
dcmsox2004 Site Supporter Join Date: Apr 2008 Location: rhode island Photos: Gallery \| Albums Posts: 7,522	ricoh rikenon 50mm f1.7 p setting?? Staff note: This post may contain affiliate links, which means Pentax Forums may earn a small commission if a visitor clicks through and makes a purchase. If you would like to support the forum directly, you may also make a donation here. hi... i pulled the trigger on buying this lens... PENTAX-A 50mm 1.7 *CLONE FOR PENTAX FILM & DIGITAL CAMS - eBay (item 370164741317 end time Feb-25-09 05:50:33 PST).. for 30 bucks, i could not control myself..... i found few reviews of this lens, none though with what is purported to state that this lens' p setting is the same/clone to the pentax a setting......... does anyone have any experience with this lens..... compulsive dave........ also, i found this......... made my eyes spin counter clockwise... can anyone really interpret this data into double digit iq language?? http://www.pbase.com/steephill/image/38667509

02-25-2009, 07:03 AM	#3
dcmsox2004 Site Supporter Join Date: Apr 2008 Location: rhode island Photos: Gallery \| Albums Posts: 7,522 Original Poster	was that important????? my wife always gets a chuckle that i never read instructions... i figured i had a genetic predisposition to figure these thing out without benefit of manuals.... i did read the listing .... unless i am more caffeine deprived than usual... it appears to me that this is mountable (after pin removal) on my k200d... for 30 bucks, if i am indeed asleep, what the heck... and...... https://www.pentaxforums.com/userreviews/showproduct.php?product=435&cat=8 Last edited by dcmsox2004; 02-25-2009 at 07:05 AM. Reason: found additional information.........

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Help with Ricoh Rikenon XR 50mm f/1.7	buckyweet	Pentax SLR Lens Discussion	4	07-19-2010 01:20 PM
For Sale - Sold: Ricoh Rikenon XR 50mm f/1.7 lens - PK	Nick Siebers	Sold Items	9	07-14-2010 12:08 PM
50mm f1.4 Ricoh Rikenon XR	stewh	Pentax SLR Lens Discussion	1	06-22-2010 09:30 AM

02-25-2009, 06:59 AM	#2
Jodokast96 Veteran Member Join Date: Oct 2007 Location: Erial, NJ USA Photos: Gallery \| Albums Posts: 2,134	Did you even read the description before bidding? Quote: The P is equivalent to the A on the Pentax lens.

02-25-2009, 07:07 AM	#4
wlachan Veteran Member Join Date: Sep 2006 Location: Canada Photos: Albums Posts: 2,625	The P setting is for Ricoh XR-P, and those subsequent models. It doesn't work on Pentax.

02-25-2009, 07:14 AM	#5
dcmsox2004 Site Supporter Join Date: Apr 2008 Location: rhode island Photos: Gallery \| Albums Posts: 7,522 Original Poster	uh oh...... i've emailed the seller, noting that per the item description.... it should mount and work on my k200d body... i will update asap.............. i just could'nt wait.......... at my age i thought i'd aquired a bit more patience....

02-25-2009, 08:11 AM	#6
Sila Forum Member Join Date: Apr 2008 Location: Denmark Photos: Gallery Posts: 97	Tagged.............

02-25-2009, 08:49 AM	#7
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by dcmsox2004 uh oh...... i've emailed the seller, noting that per the item description.... it should mount and work on my k200d body... i will update asap.............. i just could'nt wait.......... at my age i thought i'd aquired a bit more patience.... You have been taken my friend. The description is misleading and false. Rikenon-P is not equivalent to Pentax-A. The "P" setting on the lens is specific to Ricoh program cameras. On Pentax film bodies of the same vintage, functionality was limited to Av or manual modes. DO NOT MOUNT THIS LENS ON YOUR CAMERA. IT WILL JAM ONTO THE MOUNT AND MAY REQUIRE PROFESSIONAL ASSISTANCE TO REMOVE!! The Rikenon-P lenses have a small pin that jams into the AF drive on your camera's mount. The lens may be modified, but will require partial disassembly. I would ask to cancel the sale. Steve

02-25-2009, 08:54 AM	#8
dcmsox2004 Site Supporter Join Date: Apr 2008 Location: rhode island Photos: Gallery \| Albums Posts: 7,522 Original Poster	thanks steve... i did ask to cancel the sale... and i'm awaiting response from the seller.. i did ask (post sale, duh) if he had mounted this on a pentax digital body... i'm curious, is this the same ricoh pin that has been discussed at length in the forum? i've had some lenses that i have removed the offending pin and everything worked out aok.. i.e. sears 135mm f2.8, vivitar 75-300mm a setting.... dave m

02-25-2009, 08:58 AM	#9
Nesster Veteran Member Join Date: Oct 2006 Location: NJ USA Photos: Gallery Posts: 13,072	This is precisely that Ricoh pin, it came into being with Richoh "P"rogram cameras that use "P"rogram settings on the aperture ring.

02-25-2009, 08:59 AM	#10
dcmsox2004 Site Supporter Join Date: Apr 2008 Location: rhode island Photos: Gallery \| Albums Posts: 7,522 Original Poster	can this pin be removed and the lens used ? with some automatic functionality ? thanks... dave m

02-25-2009, 10:00 AM	#11
Just1MoreDave Site Supporter Join Date: Feb 2007 Location: Aurora, CO Photos: Gallery \| Albums Posts: 6,340	Originally posted by dcmsox2004 can this pin be removed and the lens used ? with some automatic functionality ? thanks... dave m The pin can be removed or ground away without much trouble. I don't think the lens can ever have A lens functionality. It could be that no one has tried hard enough.

02-25-2009, 10:10 AM	#12
Rykoh Veteran Member Join Date: Aug 2007 Location: Oregon, USA Posts: 318	Originally posted by Just1MoreDave The pin can be removed or ground away without much trouble. I don't think the lens can ever have A lens functionality. It could be that no one has tried hard enough. I would think you could probably rig it, either by swapping a similarly-sized/shaped mount from an A-compatible lens (might give you a whole set of other problems though), or more likely by drilling and putting epoxy on the mount to match the proper A-lens pattern. I know somebody did this with a Rikenon XR 50/2 (non-P version), and while it functioned in AV mode, the exposure was off more and more as the lens stopped down, due to differences in how the aperture mechanism behaves between M/K-series lenses and A/FA/DA-series lenses. If I had to guess, I would say the P-series lenses also follow the same mechanism behavior as the A-series lenses (as there are third party lenses that can do both), in which case it would probably be possible to make it work. I've never tried to be honest. Ah, here's the thread I was thinking of: https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/4893-replacing-lens-mounts.html

02-25-2009, 10:45 AM	#13
dcmsox2004 Site Supporter Join Date: Apr 2008 Location: rhode island Photos: Gallery \| Albums Posts: 7,522 Original Poster	hi... thanks for the response(s), if the pin were to be removed, thus losing the 'a' lens functionality, then for my uses, it would not be what i wanted... i just could have spent a few more $$ to get a pentax smc a 500mm 1.7 lens... but, duh, i did'nt exercise my normal due diligence.... out of character for a character like me....... live and learn, thanks to my fellow pentaxians............ still waiting for the seller to respond.... once i get my funds back, i'll go for the pentax a lens.. (or for that matter, anything BUT a ricoh rikenon 'p' lens...)

02-26-2009, 06:24 AM	#14
dcmsox2004 Site Supporter Join Date: Apr 2008 Location: rhode island Photos: Gallery \| Albums Posts: 7,522 Original Poster	the seller refunded payment.... i gots to be more patient................ i've seen other similar lenses on ebay claiming they are compatible with the pentax k mount... caveat emptor, let the buyer beware thanks to my fellow pentaxians, i now know better... to all , thanks !!

04-07-2009, 01:51 AM	#15
yyyzzz Veteran Member Join Date: Mar 2009 Location: Salt Lake City, UT Photos: Gallery Posts: 509	I have this lens. It works fine on my K10d and my film pentaxes.

ricoh rikenon 50mm f1.7 p setting??

Win a Pentax Limited Lens: Raffle Now Live!