Do any other lenses have the Ricoh-P problem?


pgweber

Link Posted 29/04/2011 - 16:48
The problem of Ricoh/Rikenon lenses becoming stuck on digital bodies has been discussed often here.

Can someone confirm that it is those lenses with a pin on the mount that are the problem ones (my Rikenon 50mm f2 is fine, probably M series equivalent).

I am looking at A series equivalent lenses and want to avoid other makes/series that get stuck?

Sorry to labour this but I went from M-series equivalent film lenses to DA lenses so I lack knowledge of what came between.

Regards
Peter

Pentax K5
Pentax DA 18-55 Mk1, 50-200 (Samsung), 16-45, 55-300 Mk1, 35 f/2.4
Pentax MZ6 + FA28-90, FA50 f/1.4, M 50 f/1.7
Tamron 80-210mm & 28mm

Cisco

Link Posted 29/04/2011 - 17:12
It can be a problem sometimes ! It seems they changed the pin at some point, to a less obtrusive one, which no longer gets stuck

Have had fun with that though

You can always remove it !? as most do
K-7 | K10 | DA 18-135 | DA 18-250 | DA 55-300 | DFA 100 |

bforbes

Link Posted 29/04/2011 - 17:31
It could be a problem with any third party manufactured lens that has been made to fit both Pentax and Ricoh. On both Sigma and Vivitar lenses I have, this is denoted by a PKA/R marking. As Cisco said, the pin can easily be removed.
Barrie
Too Old To Die Young

http://www.pentaxphotogallery.com/artists/barrieforbes
https://www.flickr.com/photos/189482630@N03/

Algernon

Link Posted 29/04/2011 - 18:16
I've used Vivitar lenses that have the PIN without and problems. It's usually rounded on the end and shouldn't get stuck. They were after all made to fit Pentax and Ricoh.

Your Rikenon f/2 is probably better than the Pentax f/2. I've always found Ricoh 50mm lenses to perform the same whether f/1.4, f/1.7 or f/2
Half Man... Half Pentax ... Half Cucumber

Pentax K-1 + K-5 and some other stuff

Algi

Cisco

Link Posted 29/04/2011 - 18:21
Algernon wrote:
It's usually rounded on the end and shouldn't get stuck.

Exactly, they are now ! but not always !!
K-7 | K10 | DA 18-135 | DA 18-250 | DA 55-300 | DFA 100 |

bforbes

Link Posted 29/04/2011 - 18:32
Algernon wrote:
I've used Vivitar lenses that have the PIN without and problems. It's usually rounded on the end and shouldn't get stuck. They were after all made to fit Pentax and Ricoh.

Your Rikenon f/2 is probably better than the Pentax f/2. I've always found Ricoh 50mm lenses to perform the same whether f/1.4, f/1.7 or f/2

As far as I understand it would not have been a problem when the lenses were made. It became a problem when Pentax introduced auto focus and modified the K mount to suit.
Barrie
Too Old To Die Young

http://www.pentaxphotogallery.com/artists/barrieforbes
https://www.flickr.com/photos/189482630@N03/
Last Edited by bforbes on 29/04/2011 - 18:33

Cisco

Link Posted 29/04/2011 - 19:02
Oh Yes !! indeed
K-7 | K10 | DA 18-135 | DA 18-250 | DA 55-300 | DFA 100 |
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