general Lens-questions ...

As I suggested above, if you want a superzoom, take the Sigma. The difference between 250 and 270 is pretty minimal and you'll save some money. The two lenses are pretty comparable in quality. To me, more important is that the zoom and focus rings of the Sigma will rotate in the same direction as your Canon glass.

 

I missed that Sigma updated this lens a few months ago. For both Sigma and Tamron, the newer version is smaller and lighter. Take a look yourself. (Older version on the right.)

Ah great link thanks ^^

 

And what do you think about a Canon 18-200mm lense? (direct from canon?)

My friend has that. It's ok. Quick AF for a non-USM lens. But for a superzoom, I'd favor longer reach since that's kind of the entire point of having one. If the Canon had USM, I'd be much more inclined to favor it, but it does not. Canon's loss.

Which wide-lens do you use for Canon???

When I was starting out, I was more interested in getting portrait lenses for my dolls or fast zooms for indoor and event use, so wide angle was low priority. Therefore, I have never owned a Canon mount lens wider than 17mm. I actually feel ready for a wide angle lens now, but I've switched to micro 4/3 so I'm not looking at Canon mount lenses anymore. (Saving for Panasonic 7-14mm.)

 

If I was still buying Canon mount, these would be my candidates:

• Canon 10-22mm because it is Canon brand and has the best resale value/lowest cost of ownership.
  
• Sigma 8-16mm because it is the widest.
  
• Tamron 10-24mm because it has the biggest zoom range and aperture of ~f/4.
  
• Tokina 11-16mm because it is f/2.8.

If I were buying today, it'd be the Tamron for being the best compromise.

for fisheye lens, i recommend samyang 8mm. its manual photo but with the right setting, its pretty sharp, im using it and love it a lot.

for fisheye lens, i recommend samyang 8mm. its manual photo but with the right setting, its pretty sharp, im using it and love it a lot.

Fish eye to me is still just a "for fun" lens. I definitely won't be using it all the time because it is just not practical enough