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Focus on D200

J

james52

New Member
Hi to all at Nikon info forum.\
I'm a new member to this and would like to introduce myself.
I have recently bought a D200 and find it a truly amazing piece of kit. I travel and my camera travels with me. Culture, architecture and landscape is my bag..... waiting hours for light etc.
But recently I purchased a 10-20 Sigma lens, amazing for interiors etc, but when checking out the pictures and blowing them up on the viewer, they appear a little soft. Sharpening on the camera is normally set to default as auto, this I turned off preferring to do post sharpening work in Photoshop. Any thoughts on this anomaly would be greatly received,perhaps this has happened with you,indeed the whole focussing process with the D200 is a complex procedure with 11 or 7 trapping areas and wide targets
to play with. I'm in British Columbia at the moment, so the big sky and the mountains are being photographed, so any advice would be appreciated.

Kindest regards.

Jim Watters
 
Jim:

I don't have any experience with that lens, but I would try to manually focus it for test purposes.

Regards:

Gilbert
 
On another forum, several of us have been in the process of buying wide zooms. A couple had already bought the Sigma, and none were all that happy.

I bit the bullet and bought the Nikkor a few days back. The authorized Nikon dealer - London Drugs - is only 820.10 feet from my back door, (if Google Earth is accurate) and about a block beyond is a lovely hiking and biking trail. I should have used my tripod, since I was shooting into dark woods, but wanted to try the new lens for a few shots immediately. A number of soft shots can be attributed to slow shutter speeds but all in all, I was pleased with the results.

http://www.larry-bolch.com/ephemeral/Trail/

Lenses such as these must be incredibly difficult to make, reversed telephoto designs with the extreme retrofocus that the thick body of an SLR demands. Except with rangefinder or view camera bodies, wide-angle design means a whole lot of compromises. I do not expect it to be the equal of my other lenses, but so far see little to complain about. Realizing how challenging such a lens might be, I opted to pay double and buy the 12-24mm Nikkor.
 
Hi Jim,

Yes it's agree that this Sigma 10-20mm image is soft compare to Nikkor 12-24mm and Tokina 12-24mm.

I did some test shoot from above 3 lens and found that out-of-camera result (no post processing) the best is Nikkor but the prize is double from the rest. The second is Tokina. unless you concern about the extra 2mm you need. Personally I don't prefer variable aperture lens. I like fix aperture lens, prefer with F2.8............but unfortunately none in the market for wide-angle zoom lens.

Just my humble opinion.


regards,

Kelvin
 
With the thickness of the Nikon body, being able to build a 12mm lens that clears the mirror is a minor miracle. Judging from the size of the old 14mm and 15mm primes, and the fact that the 15mm was only an f-5.6, I am most pleased to have a fixed aperture f-4.0 wide zoom. The 14mm prime is an f-2.8 IIRC, and I have heard that it is not that great on film and really quite poor with digital. I have done a lot of shooting at the equivalent of 18mm, and most of it was with an f-8.0 47mm Schneider SuperAngulon on a 6x10 medium format camera. In comparison, f-4.0 is awfully fast! :)
 
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