Carl Zeiss Jena lenses

ywcheong · 29th April 2007

Hi
I am thinking of a Pentax K100D to replace my ageing Canon G2 P&S which I find limiting (noise, indoor white balance off, limited ISO and cropping).
Can Carl Zeiss Jena lenses from my old (1980s) Praktica camera (bayonet B mount) be adapted to a Pentax K100D? I need ready made ones as DIY is beyond my ability.
Also for analog flashes Metz Mecalitz 30 BCT4 and SCA 300? Metz's website does not list these old models.
Thanks for your time

fengwei · 29th April 2007

Sorry to tell you that Praktica bayonet B mount lenses can't be used on a Pentax dSLR camera as far as I know, and I don't think there is any adapter for this either...

As to flash, K100D only use P-TTL ones, so it's better you get the newer versions (both from Pentax and Sigma) for better results.

BTW, K100D is an excellent camera. I'm sure you'd love it. Hope you'd be a Pentaxian soon

Good luck.

creampuff · 29th April 2007

If you're ok with manual flash, older flash units can be used, the only precaution is the flash trigger voltage. Older flash guns may have a very high trigger voltage that could fry your camera's flash contacts. You can do an online search and check on your model's trigger voltage or use a multimeter and check it youself.

alvinsclee · 29th April 2007

Another reason for incompatibility... flange distance on Praktica B is different from that on Pentax K...
http://forum.manualfocus.org/viewtopic.php?id=4557

ywcheong · 29th April 2007

Thank you very much for your replies.
I accept that it will be better for me to start with new equipment.
Hopefully the days with a K1000 and 50mm f2.0 will help.
Looking forward to learn from all of you

westclox · 29th April 2007

OT abit, is the Jena coating the same as T* ones?

fengwei · 29th April 2007

Originally Posted by westclox

OT abit, is the Jena coating the same as T* ones?

Definitely not ...

alvinsclee · 29th April 2007

Originally Posted by westclox

OT abit, is the Jena coating the same as T* ones?

In fact, Pentax SMC is closest to Carl Zeiss T* ... I mentioned it in this thread...
http://forums.clubsnap.org/showthread.php?t=270285#12

Keltzar · 29th April 2007

If you have the rarer PB lenses like the 50/1.4, 55/2.8 macro , 20/2.8 flektogon and 80/1.8 pancolar you can probably trade these in for lenses you can use for your pentax.

that said, the PB optics are quite good. I'm keeping mine for the day that I may be able to find an adapter to use them on my EOS.

29th April 2007	#2
fengwei Moderator Join Date: Aug 2004 Location: Bukit Gombak Posts: 9,067	Re: Carl Zeiss Jena lenses Sorry to tell you that Praktica bayonet B mount lenses can't be used on a Pentax dSLR camera as far as I know, and I don't think there is any adapter for this either... As to flash, K100D only use P-TTL ones, so it's better you get the newer versions (both from Pentax and Sigma) for better results. BTW, K100D is an excellent camera. I'm sure you'd love it. Hope you'd be a Pentaxian soon Good luck.

29th April 2007	#3
creampuff Senior Member Join Date: Jul 2006 Location: East side Posts: 3,341	Re: Carl Zeiss Jena lenses If you're ok with manual flash, older flash units can be used, the only precaution is the flash trigger voltage. Older flash guns may have a very high trigger voltage that could fry your camera's flash contacts. You can do an online search and check on your model's trigger voltage or use a multimeter and check it youself.

29th April 2007	#4
alvinsclee Member Join Date: May 2006 Location: Redhill, Singapore Posts: 346	Re: Carl Zeiss Jena lenses Another reason for incompatibility... flange distance on Praktica B is different from that on Pentax K... http://forum.manualfocus.org/viewtopic.php?id=4557 __________________ * Take only pictures, leave only footprints, kill only time... and live a life! * :) Alvin

29th April 2007	#5
ywcheong New Member Join Date: Apr 2007 Posts: 12	Re: Carl Zeiss Jena lenses Thank you very much for your replies. I accept that it will be better for me to start with new equipment. Hopefully the days with a K1000 and 50mm f2.0 will help. Looking forward to learn from all of you

29th April 2007	#6
westclox Member Join Date: Jan 2007 Posts: 474	Re: Carl Zeiss Jena lenses OT abit, is the Jena coating the same as T* ones?

29th April 2007	#1
ywcheong New Member Join Date: Apr 2007 Posts: 12	Carl Zeiss Jena lenses Hi I am thinking of a Pentax K100D to replace my ageing Canon G2 P&S which I find limiting (noise, indoor white balance off, limited ISO and cropping). Can Carl Zeiss Jena lenses from my old (1980s) Praktica camera (bayonet B mount) be adapted to a Pentax K100D? I need ready made ones as DIY is beyond my ability. Also for analog flashes Metz Mecalitz 30 BCT4 and SCA 300? Metz's website does not list these old models. Thanks for your time

29th April 2007	#9
Keltzar Senior Member Join Date: Jul 2002 Location: West Posts: 3,161	Re: Carl Zeiss Jena lenses If you have the rarer PB lenses like the 50/1.4, 55/2.8 macro , 20/2.8 flektogon and 80/1.8 pancolar you can probably trade these in for lenses you can use for your pentax. that said, the PB optics are quite good. I'm keeping mine for the day that I may be able to find an adapter to use them on my EOS.