The Sigma 500/4.5 was my very first lense, and it is still the lense I use for almost all of my photos. The only things I don't like about it is that it doesn't work well with converters, it lacks os/vr and I have a feeling that focus could be more accurate. I also would like it to be slightly longer, but that is another question.
So now Sigma comes out with a new Sigma 500/4 Sports that seems to solve all my issues and be on level with the Nikon 500/4. I have found two reviews so far (one is in dutch):
http://www.photographyblog.com/reviews/sigma_500mm_f4_dg_os_hsm_sports_review/http://natuurfotografie.nl/review-sigma-500mm-f4-dg-os-hsm-sport/I would like to hear what you all think about this lense. Two qestions that comes to my mind are:
Will there be any reason to buy the Nikon 500/4 instead of this new Sigma lense?
Will Sigma continue and come out with a 600/4 and/or a 800/5.6 in the Sports series?
Comments
I would think that Sigma would introduce other big primes depending on the success of the 500.
I have tested Sigma 500 F4.5, Nikon 500mm F4 AFS-VR II
I also own the Sigma 180mm F2.8 Macro.
My conclusions are that :
Optically, Nikon super telephoto primes are their best lenses. They are sharp, free from distortion and CA ( other than the 500F4-P which has fringing wide open ) . The primary difference in later lenses optics is how sharp and contrasty they are at F4. The later the version, the sharper they are at F4.
The Sigma 500f4.5 is quite a poor lens wide open and needs to be at f8 to be really sharp ( the Nikons reach 98% of peak sharpness at f5.6 ) . The autofocus is also much slower than the Nikon primes and lock is not as accurate.
Fast forward to todays lenses, and the Sigma 180mm F2.8 is optically stunning, even wide open, so if the new 500 matches that it should match the Nikon Superteles. My main complaints are the VR ( only 3 real stops ) and autofocus, which does not "target lock" on flying birds the way the Nikons do, and sometimes misses and chatters on static subjects.
I have been watching Sigma carefully - I see simliar complaints for the autofocus of the new 50-150 and VR of 150-600 is also only 3 stops.
So if we extrapolate, the new Sigma 500 F4 will match the Nikon lenses optically, but fall down on autofocus and VR. Autofocus is utterly key for these lenses, field of view at 500m F4 is so tiny. You will need a proper independant external lab report from someone like lens tip to really find out the truth when it is launched.
Here is one more short initial impression kind of review: http://blog.robertscamera.com/2016/11/new-sigma-500mm/
One special nice thing is the tripod collar with click stops (that you can unselect if you want). I think I will use the collar loose all the time. The click stops are firm enough to keep the lens in place although I can still turn it around if I want to.
I will buy the gigantic protection filter you can put at the front, LPT-11. It is expensive, but I think it is a smart accessory.
The supplied lens foot is too small and I think almost everybody will replace it. Has anybody tried the Sigma TS-81 foot replacement? Some people say it is not compatible with RRS clamps.