Is it me or just when pics are posted on the net (resized). The first pic, has some type of artifact or CA around the Chimmney, the others have the same around the Plane. I have seen this on alot of Telephoto pics shown on the Web, and mostly prevelent on pics taken with VR Lenses. Maybe it's just Digital since I don't seem to get this on Film. To me these Pics would not be considered sharp, Maybe I am being picky, but I have seen many Pics called sharp on the Web with the same problem. Please explain the artifacts,not flame me, so I can learn. This wasn't meant as a flame. I hope to someday to get this lens.
-When you arise in the morning, give thanks for the morning light, for your life and strength. Give thanks for your food, and the joy of living. If you see no reason for giving thanks, the fault lies with yourself. - Tecumseh, Shawnee Chief
-It is not neccessary for Eagles to become Crows. - Sitting Bull, Lakota Medicine Chief
>Is it me or just when pics are posted on the net (resized). >The first pic, has some type of artifact or CA around the >Chimmney,
the first pic was taken with a normal 50mm lens as reference.
The second pic is the actual pic taken at 800mm using the sigma, basically what you see at print size.
The last pic is at 100% crop on PS. I use 100% in PS to see in details, but the 13x19 prints I make is more like the second pic you see.
Of course, this is a zoom lens, and no zoom will match a prime, but I posted this because I was impressed in erms of the range and details this lens is able to capture. I am now thinking about getting or trying out a 600mm lens to see.
The photo was taken with a D2X, ISO 200, wide open. shutter around 1/250s
Fri 18-Jul-08 03:03 PM | edited Fri 18-Jul-08 03:05 PM by Philip Weber
I use the Sigma 300-800 with my D300, primarily for birds and can unequivocably recommend it for IQ and sharpness. $7,000 is a lot for a lens but for me well worth it and the range vs. a fixed focal length made it (for me) THE choice for loooong glass.
My only caveat to potential buyers is that there is no VR, so good long lens technique is essential. I mount mine on a Gitzo 3540LS, and a Wimberley V2.
Congrats on your purchase; based on experience with mine, I know you'll really enjoy it.
Sat 19-Jul-08 01:28 PM | edited Sat 19-Jul-08 01:30 PM by nrothschild
You guys are all wimps. You don't need a tripod for that lens, as illustrated below.
(I hope you appreciate my blasphemous humor, being a mod over on the tripod/support forum. I first posted that image there on a slow day . Couldn't resist reposting it here, and thought the 300-800 owners might enjoy it )
Have you tried using the lens with any type of teleconverter?
I know I'm getting 1,200mm reach on my D300 but for birds, it seems at times like one can never have enough reach. I'm not sure how a third party TC would interface and don't know how the lens would do with my 1.4 TC-E II.
"Have you tried using the lens with any type of teleconverter?"
I have used the Sigma 1.4x teleconverter with the Sigma 800mm prime. It's inconvenient because AF doesn't work (the Sigma teleconverter refuses to allow it). I set my tripod on a stationary target and used the D300's live view mode to focus.
The Sigma TCs can very simply be fooled into at least attempting AF. All it takes is a sdmall piece of tape or a dab of fingernail polish on one of the contacts in the TC. (I think it's the one all the way clockwise as you're looking at the TC from the lens side, but I'm not positive. There are a couple of web sites out there that show how to do the mod, which is entirely reversible.)
_____ Brian... a bicoastal Nikonian and Team Member
My gallery is online. Comments and critique welcomed any time!
I always wanted this lens, but when a 800mm f5.6 Nikkor AIS came up for sale used at 1/3 the price, I couldn't pass it up. I don't miss the AF, but I share your pain with trying to keep it steady.
That guy handholding it is fine, but I wonder what shutter speed he's using and how sharp his images could possibly be, especially on the DX format when you're basically looking at 1200mm in terms of shake. Beyond the 13 lbs or so, it is very long and front heavy and keeping the front end steady can't be easy.
I use my big Gitzo and Whimberly head whenever I use my 800mm lens. I sometimes add a monopod on the camera for static shots to help. It is so long that even on a locked gimbal head, the torque can introduce vibrations. The monopod helps here as well as mirror lock up and a remote release.
I use the Sigma 1.4x EX TC on my 800mm Nikkor with good results. Here is a moon shot with it: