What in God's name is up with the focusing on the Sigma 10-20?

Finally got this lens today and went out shooting with it.

Everytime I focused at something very, very far away (or even the sky) the "focusing meter or whatever it's called" showed it focusing at 3 feet or so. Now I understand when shooting at 10mm the depth of field is ridiculous. So everything from 3 feet to infinity should be in focus like this?

I shoot some in manual focus at infinity and those turned out a little better.

I didn't notice what it was focusing on at focal lengths different than 10mm (I'm in love with 10mm).

Ah what the hell a sample shot from today:

I think you're just coming across the tremendous DOF with a lens of that short a focal length...try playing around with the various online DOF calculators, this one says for a 10mm lens at f/11 for example the hyperfocal distance is 1.56 ft, with everything from .8 ft to infinity in focus.

If you're into "from the hip" type street shooting this could be a great thing - just preset focus manually and forget about focusing at all...

Is the way ultra wide lens is designed. I read that object distance passes 3 meter is not any sharper than shooting at infinity. The focal length is so wide that anything beyond 3 meters objects don't get any sharper. Seriously, set the focus distance to infinity if you are shooting anything but very close object.

Here is the reason why:
http://photo.net …gital-camera-forum/00PtTv

Happened to me all the time. When I wanted to shoot a large landscape or something it didn't focus to infinity. So for our vacation at Madeira I decided to go manual focus on the landscape shots, I still screwed up on some of the shots because it was still slightly off, but couldn't see that on the crappy LCD screen of my 30D, missing some great shots. So weird