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Welcome to my Galleries of Photos.

Testing Sigma 12-24mm F4.5-5.6 Full Frame Lens on Nikon D700

THE WIDEST LENS AVAILABLE TODAY

Full Frame 12mm F11

Center

Corner

Some Vignetting - but Corner holds up well.


 

Full Frame 12mm F4.5

Center

Corner

Much more Vignetting - some loss of sharpness in Corner - but pleased not worse.


Compare Centers

F11 on the Left - F4.5 on the Right

While F11 is good, F4.5 is not too bad.


Compare Corners

F11 on the Left - F4.5 on the Right

F11 hold up well, while F4.5 still has reasonable detail but for Vignetting.


BRICK TEST

Full Frame 12mm F11

Center

Corner

Some Vignetting - but Corner holds up well.


 

Full Frame 12mm F4.5

Center

Corner

More Vignetting - some loss of sharpness and colour in Corner - detail surprisingly good considering wide open F4.5


Compare Centers

F11 on the Top - F4.5 on the Bottom

Detail at F4.5 is good compared to F11 - a slight loss.


Compare Corners

F11 on the Top - F4.5 on the Bottom

Vignetting and colour down at F4.5 - but retains a lot of detail compared to F11. Very Pleased!


BRIEF COMMENTS:

This lens has been reported as having variable samples. So I am confident and pleased at the results above that this is most certainly a very good sample. I took a gamble when I bought it for a cheaper than average price with little chance of return. The above shots were taken less than 30 minutes after the lens was delivered.

Compare the above to this reviewed (and still reasonably well received) and it becomes apparent that my sample is a good deal better. Yes, I am very pleased.

www.dphotojournal.com/sigma-12-24mm-f45-56-ex-dg-hsm - See for yourself that my sample is better than the review sample.

Yes, vignetting is the main problem with this lens, but not an insurmountable one. Much more important was consistency of detail and no great increase in softness at lower F-stops, even the corners do better than expected. Re vignetting, it is only fair to recognise this is the widest rectilinear lens available, period!

Len distortion is amazingly low. I suspect they hay have traded some vignetting again lower distortion. There is no great barrel distortion even at 12mm, it is outstanding! I will check, but I am fairly sure that my Nikkor 17-35mm F2.8 (Full-Frame) has more barrel distortion at 17mm that the Sigma has at 12mm. Yes, the Sigma may be a bit softer than the Nikkor, not as sharp. but the Sigma can do things that the Nikkor cannot. Limitations can be worked on in PhotoShop.

Also it is not as fast as my Nikkor 17-35mm (F2.8 versus F4.5 at best), but with the D700 you can safely increase the ISO equivalent to +2 stops and get good low light performance. The vignetting at F4.5 is not always a big problem under those circumstances.

I also have the Nikkor 16mm Fisheye with 180 view, which is F2.8 fast. With Fish-Hemi software can give good result too, vignetting is better but corner resolution is not absolute either.

It's early days yet, but I am really looking forward to having fun with this Sigma lens. It is not without faults, but its pros greatly outweighs its cons. It will give perspectives I rave for.

For those who want to explore ultra-ultra-wide (UUW) lenses, it's all about getting in close and personal and making use of depth of field (DOF). You can often set it to F8 or F11 in Aperture priority, set the lens so that infinity is always in focus but back off enough to get max DOF - it should read 0.7 Metre. Lucky you if you have the Nikon D700, set ISO to suit lighting condition, use common sense. If you set ISO so that you never go below 1/30th of a second, you can be sure of sharp pics 90+% of the time.

Now everything from 400mm to infinity will be in focus no matter what. Go out take advantage of that - and yes, get real close. Have fun!

Joe Rasmussen

See this 532Kb Panorama Montage using this lens.

 

 

 

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Copyright 2003-10 Joe Rasmussen & JLTi
Last modified: Sunday January 05, 2014

Just had a terrible thought. If "intelligent design" is unscientific, then who will design our audio equipment?