[BFCY]

Hi Sirs,

I know Canon EFS 10-22 can only for 20D/350D etc and not for 5D or film, how about Sigma 10-22? Can it be used for full size CMOS such as 5D and film camera such as EOS5?

Is there a big different between the image quality and speed?

Thx

[tam_dominic]

Sigma 10-20mm not 10-22mm is for APS size sensor only

The specification is as follow :
http://www.sigma-photo.co.jp/english/lens/digital/10_20_4_56.htm

[BFCY]

Thx.

So, is that meant both are limited to 350D/20D etc and not good for full size DSLR and my EOS 5?

[tyuen]

You may consider Sigma 12-24 which can be used in full frame body.

[beancurdbean]

Except fisheye, the widest FOV is 12mm by Sigma 12-24 + full frame or film

[BFCY]

Thank a lot Sirs. Then I shall go for 12-24 because speed is not a 1st priority for landscape, am I right?

[beancurdbean]

Yes, if you use film SLR or FF DSLR

[tam_dominic]

10-20mm 470gram
12-24mm 600gram

Based on the MTF chart the optical quality of 10-20mm is much better.

[beancurdbean]

sorry, 10-20mm MTF chart 只係去到15mm
如果12-24mm MTF chart 只係睇到15mm (落APS-C情況), 都會好好

最重要樓主有用film