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100N converted + extension TC1.4x or 2x for macro work

 
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lam



Joined: 27 Apr 2008
Posts: 127
Location: Bangkok Thailand

PostPosted: Tue May 06, 2008 12:25 am    Post subject: 100N converted + extension TC1.4x or 2x for macro work Reply with quote

I need to expand macro work and think about purchase a new extension tube. Can I put TC 1.4X or 2X with 100N converted?Please share your experience.
Thanks
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DSLR18



Joined: 29 Feb 2008
Posts: 15
Location: New York

PostPosted: Tue May 06, 2008 1:22 am    Post subject: Reply with quote

Yes, it can be use extension on my canon rebel xsi,


96580940.1dbriISi.IMG_1224.jpg
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EXIF Information  Details
Camera make  Canon Camera model  Canon EOS DIGITAL REBEL XSi
ISO  100 Focal length  100mm
Shutter speed  1/800 seconds Aperture  f/3.5


Last edited by DSLR18 on Fri May 09, 2008 7:26 pm; edited 1 time in total
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conurus
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Joined: 15 Aug 2006
Posts: 795
Location: Vancouver, Canada

PostPosted: Wed May 07, 2008 4:42 am    Post subject: N Makro-Sonnar 2,8/100 on Canon TC 1.4x II Reply with quote

As you all know, the Canon 1.4x TC has a protruding front element which interferes with the rear element of most lenses.

It will hit the rear element of the N Makro-Sonnar 2,8/100 from infinity to 0.7m.

It will NOT hit from 0.7m to 0.32m.

There is a zone switch on the lens. When "ZONE" is selected instead of "FULL", the AF ranges from either infinity to 0.5m, or 0.5m to 0.32m. So, if you preset the lens to any distance under 0.5m, and set the switch of the lens to "ZONE", it will autofocus without ever hitting the rear element. However, we recommend turning the AF of the lens completely OFF. This is because the ZONE mode is implemented in software by the lens, and we do not trust a software solution to limit the AF range to work all of the time.

When I convert your N Makro-Sonnar 2,8/100 lens, the mount may either have 8 or 11 electrical contacts. If it has 11 contacts, it will multiply the focal length by 1.4 in the EXIF data when a TC 1.4x is used, and reduce the maximum aperture to f/4. Not all Makro-Sonnars can be equipped with the 11 pin connector - it depends on what shims I find inside.

Attached is an example of MS100 + TC 1.4x + full frame camera. If you have a cropped camera you will get an even tighter cropping.



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EXIF Information  Details
Camera make  Not available Camera model  Not available
ISO  100 Focal length  100mm
Shutter speed  1/250 seconds Aperture  f/16.0

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