Canon EF-S 17-55mm VS Sigma 17-50mm VS Tamron 17-50mm?

qianp2k wrote:

psychoticpanda wrote:

Keith Z Leonard wrote:

28mm is a good focal length, what I meant is that if you owned one of these zooms being discussed I don't think you'd use the 28mm prime all that often. The only other suggestion I could make to you that hasn't been covered here is renting the both of them and seeing which you like better, that's what I did. Sadly that's a bit of an investment itself.

I didn't understand the original post fully, sorry about that. You are right it would only be a little bit faster of a lens so I would probably use the 17-5X for whatever I would use that prime for. Now I guess it is just between the Sigma and a flash or the Canon...

DXOMark EF 28/1.8 vs EF-S 17-55/2.8 IS 

You see EF 28/1.8 has no advantage over EF-S 17-55/2.8 IS unless you stop down to at least F2.0 or to F2.8 no mention latter is a zoom and has 'IS'. But once you stop down 17-55/2.8 IS a bit more, it gains advantage again. 28/1.8 doesn't perform well on a FF as well.

You don't get wrong with either EF-S 17-55/2.8 IS or Sigma 17-50/2.8 OS. If you're willing to spend $400 more, get Canon or get Sigma. Then $400 difference you saved can get 430EX II ($250) and Canon 40/2.8 STM Pancake ($150) for street shots.

I'd actually advise skipping the 17-50 lenses all together and getting a 5Dc. After doing research and a lot of informative posts were made on this forum you would be better off with a 5Dc and getting a lens such as a used canon 24-105mm f 4l and a 5D body after selling your current crop body.

Reason being is that the 17-50 isn't true 2.8 on crop body it's actually F4.5 bokeh and image noise wise (2.8 * 1.6).

So the 24-105 would be better optically, also wider than the 17-50 lenses, and longer aswell not to mention it has IS.

Seems like a damn good zoom lens to me and paired with a FF body like a cheap used 5Dc you can;t go wrong.

The Canon 17-55 is definitely way overpriced though and the Sigma has a yellow tint and the Tamron has a cool color cast. I'd stay away from each one of these lenses and stick with the kit lens if you plan on staying with crop body.