View Full Version : wide angle lens-looking to buy

07-10-2007, 11:49 PM
i have a d40 so i guess i'm kinda limited for now.
im looking to get the sigma 10-20 hsm, sigma 8mm, or nikkor 10.5
but i really like the nikkor 10.5 fisheye but its not af-s
but with the depth of field of the 10.5 as well as the 8mm
does it matter much to focus on my own?

if there are any other suggestions please provide some.:)

07-11-2007, 05:52 AM
Wide angle lenses are very hard to focus manually. The reason for that is the huge depth of field. Because of that, you cannot judge whether something is in focus or not. Through the viewfinder it may seem that everything is in focus, regardless of how you turn the focus ring. In the result, though, you will end up with out of focus pictures.

Having said that, my 10-20 hits infinity at a focussing distance just a little bit more than 1 m. I guess the 10.5 will do the same thing. So, if you keep the lens at infinity, you will be able to take pictures of all subjects further than 1 m away from you. Combined with stopping down the lens this will give you good results.

07-11-2007, 06:27 AM
but isnt the 10-20mm hsm which means itll auto focus on the d40.

07-11-2007, 06:30 AM
but isnt the 10-20mm hsm which means itll auto focus on the d40.

yes it will AF. its one of the most common wide angle lens' people use regardless of camera make/ model.

07-11-2007, 07:05 AM
The Nikkor 12-24 F/4 will also autofocus, but its 3 times the price of the Sigma.

07-11-2007, 12:43 PM
so the sigma is a good buy i suppose?
maybe ill just do that, buy the 10-20 sigma and the 55-200 vr nikkor

07-11-2007, 12:46 PM
Yes it is a good buy.

For the D40 the best option.