Canon EF 11-24mm f/4L Accepts Rear Gelatin Filter

keithcooper said:
The rear element barely touches any gel filter at 11mm

Image from:
http://www.northlight-images.co.uk/cameras/lenses/ef_11-24_f4l.html

It's a lens like this that makes me glad I hardly ever use filters ;-)

Hi Keith, it looks like an amazing lens...although certainly a niche...like my 8-15mm fishy and my TSe 17L!
I'm wondering what the diameter of the lens hood is? It'll be the first stop to give us an idea if the Wonderpanner 145mm filters will be wide enough to cover the objective lens. I'm also guessing that it'll be the first thing we butcher to make a temporary filter holder (like I did with the Sigam 12-24 and TS-e 17L).
 
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Nov 4, 2011
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i am aware this is a very old thread. However, today I came across the news, that Irix [swiss based lens maker] will soon be offering ND gelatin filters - sized 29x29mm and with pre-cut corners to match the rear filter holders on Irix 15mm f/2.4 and Irix 11mm f/4 lenses.

Of special interest is the low price: € 8,45 incl. tax for a complete set of ND4, ND8, ND 16 - 5 pieces each

https://www.ephotozine.com/article/irix-launch-edge-gelatin-filter-set--31087

I was wondering, whether these filters may also fit into Canon EF 11-24 [and/or 17-40, 8-15] rear filter holders ... does anyone have dimensions (mm) of Canon gelatin holders on said lenses?


EDIT: found the info. Apparently Canon EF lenses with rear gelatin filter holder are 31mm. So looks like the Irix ND filters are just a bit too small.
http://www.p4pictures.com/2015/03/how-to-use-a-gel-filter-on-canon-wide-angle-lenses/
 
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I recently got the 11-24 and bought a set of polyester 100x100mm gelatin filters from Lee (http://www.leefilters.com/index.php/camera-directory/camera-dir-list/category/polyester-neutral-density-standards). The price was very reasonably (I paid EUR 54 for a set of 3 (ND 0.3 / 0.6 / 0.9).

The filters come qith an easy to remove "mounting ring". It was quite easy to cut out 31x31mm sections and use them in the rear filter holder.

I BTW use an old CF card case to keep them in my bag (wrapped inside some lens cleaning paper).
 
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Jack Douglas

CR for the Humour
Apr 10, 2013
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Vossie said:
I recently got the 11-24 and bought a set of polyester 100x100mm gelatin filters from Lee (http://www.leefilters.com/index.php/camera-directory/camera-dir-list/category/polyester-neutral-density-standards). The price was very reasonably (I paid EUR 54 for a set of 3 (ND 0.3 / 0.6 / 0.9).

The filters come qith an easy to remove "mounting ring". It was quite easy to cut out 31x31mm sections and use them in the rear filter holder.

I BTW use an old CF card case to keep them in my bag (wrapped inside some lens cleaning paper).

Thanks for sharing this! How about some sample shots in due course.

Jack
 
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