extension tubes question....

scarr1 · 2016-09-23T11:44:18+0100

when using an extension tube(s) (without contacts), on a macro lens, does the lens have to have an aperture ring? I have the d-fa 100mm 2.8 macro, and was looking at some cheap extension tubes, but im not sure they would work, as this lens has no aperture ring. would I need a macro with an aperture ring, or extension tubes with the electrical contacts. confused!!

General Digital Photography DiscussionGeneral Digital Phot...

Add Comment

dpm dpm

256 posts
13 years
Newtownards,
NI.

Posted 25/09/2016 - 09:16 Link

contacts report aperture (and other data!) information to the camera, but the actual stopping-down is carried out mechanically by the camera.

bforbes bforbes

6913 posts
18 years
Co. Durham UK

Posted 25/09/2016 - 10:04 Link

dpm wrote:
contacts report aperture (and other data!) information to the camera, but the actual stopping-down is carried out mechanically by the camera.

my tubes have the mechanical linkage to transfer the camera actions

Barrie - Too Old To Die Young
https://pentaxphotogallery.com/artists/barrieforbes
https://www.flickr.com/photos/189482630@N03/