TimStir

Lives in Switzerland Lausanne, Switzerland
Works as a PhD Student
Joined on Jun 11, 2008

TimStir's recent activity

  • Thanks for the review. A little disappointing if it is noticeably softer than the sigma although that is a hard target to meet. I was hoping for like 95% as good wide open f/1.8 vs f/1.4 and equal ...
  • And why do you think sigma would design a lens differently? You can be sure Sigma aimed for wide open performance, especially since the lens was even slower so people wouldn't want to stop down.
  • If you want to be hand holding a majority of the time and 500mm is long enough, then I think without question the Nikon 200-500mm is the best bet> 1) lighter, so easier to hold for longer, and ...
  • TBH: I'm not 100% sure the Sigma sport IS sharper, but i think it looks very likely that the Sigma Sports at 600mm will happily capture more detail than the Nikon at 500mm and further more, the ...
  • Thanks, that is kind of what I was expecting. As nice as the 200-500m is at the price, it just isn't enough extra reach/resolution o make it worth it over the 300mm PF + 1.4xTC.
  • Yep, and add a 600mm f/5.6. these are lenses not in Nikon's line up, and although canon has a 400mm f/5.6 it is very old and the f/4.0 is a very expensive Do option. Making teles 1 stop slow than ...
  • Volume pricing is not alien to Nikon. the problem is probably related to supply. I saw somewhere that it takes something like 18 months to grow the crystal glass for the front element of the 600mm ...
  • Unrealistic price, expect something more like $4000-5000 minimum. The weight also, tamron wont have the exotic glass experience to make a lighter lens than the new Nikon some of the trade-offs ...
  • Do you have any good links to show that the Sigma S is sharper? I'm in the same boat as OP, finding it tough to choose between them. I think I am swaying to the Sigma because I have the 300mm PF + ...
  • I'm in the same situation, but what pushes me to the Sigma is I have a 300mm PF + 1.4xTC, so the smaller lighter requirements are already fullfilled. My concern with the Nikon is 420mm vs a zoom ...
  • A lot of his photos a done from a small zodiac, a tripod is useless.  Also for BiF handhold is typically preferable. That is why so many pros are liking the really lightweight new E/FL super ...
  • I am kind of leaning the same way, reach and sharpness at the long end are my biggest criteria, as long as AF speed meets a certain minimum. The fact that the Sigma S seems to have better AF is ...
  • Thanks, the weather sealing and build quality of the Sports is kind of a pro and a con, it is nice to have, especially for pros, but it adds to the size, weight and cost substantially.  Persoanlly ...
  • The reason that I am pushing towards the Sigma Sports is I have a 300mm f/4.0 and 1.4TC so I want a lens that gives decently more focal length. It is not clear to me yest if the Nikon at 500mm is ...
  • The Nikon does very well, but I think this review pushes me slightly to the Sigma Sports. I kind of need the reach I think.
  • I have the exact same questions. Have the 300mm PF and want a lens with more reach, was going for a 150-600, likely Sigma Sports, but the Nikon has confused me further. Some of my questions and ...
  • The results with the 1.7XTC (850mm f/9.5) definitely look way better than the 700mm f/1.4x TC (which look as expected). I wonder if your 1.4TC is not a good copy?  I don't see why the 1.7xTC ...
  • VR was off in the first image. It may be broken and have  loose floating VR element though.
  • Replied in More Photos
    https://dl.dropboxusercontent.com/u/29189587/DSC_5324.jpg The AF point is slap bang in the middle of the goat, just checked on the LCD review. AF-S,c central point. The lens might back ro front ...
  • Just posting this agin if people have missed it: All photos are 100% JPG, fullsized uncropped. These are from the same scene. ISO 220, 420mm, f/6.3, 1/500 VR ON Normal https://dl.dropboxusercontent ...
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Total messages 112
Threads started 16
Last post 10 months ago
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Last upload May 20, 2011