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shep315shep315 Registered Users Posts: 10 Big grins
edited September 11, 2012 in Holy Macro
If this is the wrong place to ask please let me know. I have a Canon 100mm F/2.8 Macro and was looking to purchase a EF 25 II extension tube. Will the extension tube help in magnification much? Thanks
My Smugmug
An artist turned amateur photograher
Canon 450D : Canon 50mm f/1.8 : 85mm f/1.8 USM : 100mm f/2.8 Macro USM : 18-55mm f/3.5-5.6 IS II : 270EX II Speedlite : Raynox DCR150

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    Lord VetinariLord Vetinari Registered Users Posts: 15,900 Major grins
    edited September 11, 2012
    shep315 wrote: »
    If this is the wrong place to ask please let me know. I have a Canon 100mm F/2.8 Macro and was looking to purchase a EF 25 II extension tube. Will the extension tube help in magnification much? Thanks
    Hi,
    Using the ext tube at minimum focus would increase the magnification to around 1.36:1 from 1:1.

    ie a 1cm long subject would have an image on the sensor of 1.36cms instead of 1cm.
    It's better value if you just buy a kenko canon fit ext tube set of 68mm in total. That will allow you to get to just over 2:1 magnification.

    Brian V
    Brian V.
    http://www.flickr.com/photos/lordv/
    http://www.lordv.smugmug.com/
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    shep315shep315 Registered Users Posts: 10 Big grins
    edited September 11, 2012
    Thanks Brian for the input love your work.
    My Smugmug
    An artist turned amateur photograher
    Canon 450D : Canon 50mm f/1.8 : 85mm f/1.8 USM : 100mm f/2.8 Macro USM : 18-55mm f/3.5-5.6 IS II : 270EX II Speedlite : Raynox DCR150
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