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Canon 10-22mm with 6 inch doom


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#1 marc1990

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Posted 10 January 2013 - 11:57 PM

Hello,

I am considering buying canon 10-22mm and wil use it with 6 inch doom(ikelite). Now the question: most people say you need at least 8 inch, but because of transport isseus 8 inch not a option.
So is it worth to use 10-22mm inside 6 inch doom?
I now use sigma 18-50 2.8 EX DC macro and have never notice any problems with sharpness.(6 inch doom)
I know there are other lenses, but that is an other topic.

Canon 7D, ikelite house,2x ds161 strobe,tokine 10-17mm, sigma 18-50 2.8 macro en canon 100mm 2.8 USM, flickr


#2 Cerianthus

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Posted 11 January 2013 - 08:43 AM

marc.

I would definitaly recommend the 8inch.
I am using an ikelite housing for a canon 20d. I also have the 10-22 mm, and without a diopter on around f5.6 it does suffer from fuzzy (unsharp) corners (Havent tried the diopter yet.). That will be worse with a 6 inch dome.. Your better guess would be a fisheye type lens (sigma 15mm or tokina 10-17mm), they dont seem to suffer from that problem as much.
Gerard

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Crop the world ! (Using Canon 20D, 60mm, 100mm, 10-17mm FE, Ikelite)

#3 Timmoranuk

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Posted 11 January 2013 - 09:38 AM

I shoot the 10-22mm behind a Zen 200mm dome and it performs quite well at f/5.6 or smaller. But to be fair, its my DX lens of choice for pelagics / sharks so corners are not that important when shooting into the blue. If you need detailed corners I very much suspect that a 6" port will not deliver with the Canon glass and as Gerard suggests, you may wish to consider a Tokina, but with a Kenko x1.4 which will give you the reach of the 10-22mm and largely mitigate the barrel distortion of the fisheye. Your 6" port won't be too shabby for CFWA shots with the Tokina / Kenko combo too. Remember, rectilinears need big domes for sharp corners and for definitive advice, please take a look at Alex Mustard's presentation at DEMA -

HTH, Tim
· Canon 5D3, 7D & Nauticam housings. Sigma 15mm, Canon 16-35mm, Tokina 10-17mm, Sigma 8-16mm, Canon 10-22mm, Sigma 17-70mm, Sigma 70-200mm, Sigma 120-300mm, Canon 60mm & 100mm
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