EF-S vs EF lens

Started Aug 11, 2012 | Discussions thread
meatatarian
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Re: EF-S vs EF lens
In reply to christy1685, Aug 14, 2012

christy1685 wrote:

photonius wrote:

For example there is the Canon EF-S 10-22 for ultra-wide angle, wide-angle, and there is just no equivalent on the FF side, because nobody makes a 10mm lens for FF frame, the angle of view would be huge (Sigma 12-24 for FF is the widest you can get).

I dont get this?

The angle of view for a sigma 12-24mm on a full frame is wider than the equivalent for the ef-s 10-22mm

The 12-24mm gives you 12-24mm on full frame, on the smaller sensor it would give you about 18-36mm which isnt wide at all in comparison. its wide for an apc-s but not really for a 32mm sensor.

So the widest equivalent an EF-S 10-22 will ever get since it can only be paired on a cropped sensor is about 15-34mm which is narrower than a full frame @ 12-24mm.

I think Photonius meant that there is no equivalent EF lens that gets down to 10mm, which is correct (other than fisheyes). He was referring to mounting EF and EF-S lenses on APS-C cameras only.

Putting this another way is that there is no way to get a full-frame lens (EF mount) that can go as wide on an APS-C camera as the Canon EF-S 10-22.

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