conurus Forum Index conurus
smart adapters and lens mount conversions
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Actual focal length of 645 lenses on 24x36 via NAM-1?

 
Post new topic   Reply to topic    conurus Forum Index -> 645 and 6x6 Medium Format
View previous topic :: View next topic  
Author Message
cjjmst



Joined: 14 May 2007
Posts: 9
Location: Washington, DC

PostPosted: Thu Dec 24, 2009 7:49 am    Post subject: Actual focal length of 645 lenses on 24x36 via NAM-1? Reply with quote

Hello,
Could anyone tell me what is the actual focal length of 645 lenses mounted on 24x36 full frame camera via NAM-1?
Thanks,
Jean-Jacques
Back to top
View user's profile Send private message
coleung



Joined: 10 Mar 2008
Posts: 18

PostPosted: Thu Dec 24, 2009 9:03 am    Post subject: Reply with quote

Focal lenght is no change.
Back to top
View user's profile Send private message
cjjmst



Joined: 14 May 2007
Posts: 9
Location: Washington, DC

PostPosted: Fri Dec 25, 2009 12:51 am    Post subject: Reply with quote

OK, thanks.
Jean-Jacques
Back to top
View user's profile Send private message
tonix



Joined: 07 Apr 2011
Posts: 3

PostPosted: Thu Apr 07, 2011 11:37 pm    Post subject: Reply with quote

Excuse me, I'd love to understand better.

A Contax 645 35mm lens is told to be equivalent to C/Y 21mm on a 24x36 RTS III.

But, mounted on a N1/NX 24x36 camera, using the NAM-1 adapter, it will act exactly as a 35mm. The same applies to all 645 lenses.

Right?

Thanks,

Tonino
Back to top
View user's profile Send private message
conurus
Site Admin


Joined: 15 Aug 2006
Posts: 795
Location: Vancouver, Canada

PostPosted: Fri Apr 08, 2011 2:22 am    Post subject: Reply with quote

Yes, that is correct.
Back to top
View user's profile Send private message Visit poster's website
tonix



Joined: 07 Apr 2011
Posts: 3

PostPosted: Fri Apr 08, 2011 8:19 am    Post subject: Reply with quote

So, the only Contax 21mm I can mount on Canon 5d is Contax C/Y 21mm (with adapter), while there is no way to have a 21mm on Contax N1/NX.

I see there are no conversion adapters between C/Y and N Mount.

Regards,

Tonino
Back to top
View user's profile Send private message
suman



Joined: 15 Jul 2013
Posts: 1

PostPosted: Mon Jul 15, 2013 12:00 pm    Post subject: Reply with quote

Thanks for your suggestion. Spoke with Dr Brian Caldwell about this and he said a Speed Booster for any SLR camera would be very unlikely.

The Speed Booster technology is only applicable to mirrorless.

_________________
http://www.brain-dumps.info/certification/SCJP.html
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    conurus Forum Index -> 645 and 6x6 Medium Format All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum

RSS Atom

Powered by phpBB © 2001, 2005 phpBB Group

phpBB SEO