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  Topic: FS: Converted 400mm f4 N
Ronan O Keeffe

Replies: 2
Views: 4478

PostForum: Buy and Sell   Posted: Tue Dec 20, 2011 12:56 pm   Subject: FS: Converted 400mm f4 N
Now on Ebay

http://cgi.ebay.ie/ws/eBayISAPI.dll?ViewItem&item=260918733639
  Topic: FS: Converted 400mm f4 N
Ronan O Keeffe

Replies: 2
Views: 4478

PostForum: Buy and Sell   Posted: Fri Dec 16, 2011 1:58 pm   Subject: FS: Converted 400mm f4 N
Up for sale is one Contax 400mm f4 N Tele APO Tessar.

The lens was converted by Conurus and has seen very little use since. In fact it's probably been used about 5 times in total.

The only wea ...
  Topic: [Image thread] Tele-Apotessar 400/4
Ronan O Keeffe

Replies: 37
Views: 170323

PostForum: Contax N to Canon EF Mount Conversion   Posted: Wed Mar 02, 2011 12:34 am   Subject: [Image thread] Tele-Apotessar 400/4
Robin in John F Kennedy Park, Co. Wexford, Ireland.

http://www.rokeeffe.com/blog/images/20110226183132_jfk0211-4-web.jpg
  Topic: [Image thread] Tele-Apotessar 400/4
Ronan O Keeffe

Replies: 37
Views: 170323

PostForum: Contax N to Canon EF Mount Conversion   Posted: Tue Aug 10, 2010 10:39 am   Subject: [Image thread] Tele-Apotessar 400/4
Great stuff lam Smile Thanks for posting. I must get out with mine more often!
Ronan.
  Topic: [Image thread] Tele-Apotessar 400/4
Ronan O Keeffe

Replies: 37
Views: 170323

PostForum: Contax N to Canon EF Mount Conversion   Posted: Mon Feb 01, 2010 3:11 pm   Subject: [Image thread] Tele-Apotessar 400/4
Hi Doc,

Cheers for the kind words!

It's not quite there just yet. The front focus varies with distance. I seem to have it correct for MFD ok but not for infinity.
I'll keep at it though Smile
  Topic: [Image thread] Tele-Apotessar 400/4
Ronan O Keeffe

Replies: 37
Views: 170323

PostForum: Contax N to Canon EF Mount Conversion   Posted: Mon Feb 01, 2010 11:58 am   Subject: [Image thread] Tele-Apotessar 400/4
http://www.rokeeffe.com/Web/limvtipp/content/bin/images/large/LimVTipp0110_40.jpg

http://www.rokeeffe.com/Web/limvtipp/content/bin/images/large/LimVTipp0110_44.jpg

http://www.rokeeffe.com/Web/li ...
  Topic: [Image thread] Tele-Apotessar 400/4
Ronan O Keeffe

Replies: 37
Views: 170323

PostForum: Contax N to Canon EF Mount Conversion   Posted: Sun Dec 20, 2009 8:41 pm   Subject: [Image thread] Tele-Apotessar 400/4
I still haven't dealt with the front focus issue but here's a few more.
  Topic: AF micro-adjustment feature
Ronan O Keeffe

Replies: 48
Views: 78806

PostForum: Contax N to Canon EF Mount Conversion   Posted: Wed Nov 18, 2009 4:11 pm   Subject: AF micro-adjustment feature
Thanks for this great guide Bo Ming,

I'll have to spend an hour or two at the weekend to run a series of tests and see how much adjustment I need to set for each distance.

Ronan.
  Topic: AF micro-adjustment feature
Ronan O Keeffe

Replies: 48
Views: 78806

PostForum: Contax N to Canon EF Mount Conversion   Posted: Tue Nov 03, 2009 5:41 pm   Subject: AF micro-adjustment feature
Hi Bo Ming,

The issue seems more prevalent the further you go from minimum focus distance. That is to say the further away the object the more noticeable the problem.
For objects approaching m ...
  Topic: AF micro-adjustment feature
Ronan O Keeffe

Replies: 48
Views: 78806

PostForum: Contax N to Canon EF Mount Conversion   Posted: Mon Nov 02, 2009 1:00 pm   Subject: AF micro-adjustment feature
Another request for help here.

This time it is the 400 4 TAT that is front focusing. When I use the micro focus adjust on my 50D and 5DMKII it doesn't seem to do anything at all.
So I'm guessi ...
  Topic: [Image thread] Tele-Apotessar 400/4
Ronan O Keeffe

Replies: 37
Views: 170323

PostForum: Contax N to Canon EF Mount Conversion   Posted: Sun Nov 01, 2009 12:58 pm   Subject: [Image thread] Tele-Apotessar 400/4
A few very quick grabs and 100% crops. 5DMKII ISO 400 on a monopod. 1/400 horse and 1/800 dog. Very dull day indeed.

http://farm3.static.flickr.com/2538/4063344731_deb194a8e2_b.jpg

http://farm3 ...
  Topic: Questions about orders, tracking, queue position
Ronan O Keeffe

Replies: 202
Views: 140798

PostForum: Contax N to Canon EF Mount Conversion   Posted: Wed Oct 21, 2009 11:50 am   Subject: Questions about orders, tracking, queue position
Wahay!
My 400 is on it's way. I'm checking the tracking page on Canada post about 40 times a day now Smile
  Topic: Questions about orders, tracking, queue position
Ronan O Keeffe

Replies: 202
Views: 140798

PostForum: Contax N to Canon EF Mount Conversion   Posted: Tue Oct 06, 2009 8:23 am   Subject: Questions about orders, tracking, queue position
Thank you for the update, looking forward to using the 400 Smile
  Topic: Hello new members, welcome to this board!
Ronan O Keeffe

Replies: 78
Views: 119407

PostForum: Contax N to Canon EF Mount Conversion   Posted: Sun Jun 14, 2009 4:12 pm   Subject: Hello new members, welcome to this board!
Living and breathing human being here too Smile
 
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