 |   Publisher : SIGMA Company : Sigma List Price: Our Price: Too low to display |
Features
- Large f4 aperture with minimal light fall-off for bright images
- Inner focusing system allows attachment of petal-shaped hoods and filters
- Special low dispersion glass for high image quality
- Focal length: 100 to 300 millimeters
- Designed for Konica Minolta digital SLR cameras
Product Description
This telephoto zoom lens provides a large F4 aperture at all focal lengths. The new multi layer lens coating and lens design reduce flare and ghosting, a common problem with digital cameras, and also creates an optimum color balance through the entire zoom range. Two Special Low Dispersion (SLD) glass elements in the front lens group and another two in the rear group offer excellent correction of chromatic aberration. High optical performance is demonstrated throughout the entire zoom range. The internal focusing and zooming mechanism do not change the lens' overall length, assuring ease of handling and operation. A rotating tripod mount can be conveniently detached if required. Since the front of the lens does not rotate, a circular polarizing filter and Petal-type hood can be easily attached. High-speed focusing is possible when this lens is used with dedicated APO 1.4x EX tele-converter. With the optional APO 1.4x EX tele-converter, this lens becomes a 140mm to 420mm F5.6 AF zoom. With the APO 2.0x EX tele-converter, a manual focus zoom lens from 200mm to 600mm F8 is achieved.SimilarProduct
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Customer reviews
Great Telephoto Zoom 
by .. M. Farrell (CA, USA)
I bought this lens to use with my Canon 30D for high school sports (soccer, football, baseball, etc). I already had the Sigma APO 70-200mm f/2.8 EX DG HSM Lens for Canon Digital SLR Cameras and needed more focal length. Like the 70-200 F/2.8, this lens is big, heavy, and built like a tank. The bare lens is about an inch longer than the 70-200, but the 100-300's hood is longer than the 70-200's hood.
The zoom and focus rings are wide and move smoothly with just the right amount of resistance. This lens is sharp wide open. At the overlapping focal lengths, the 70-200 at F/4 is just barely sharper than this lens at F/4 (wide open). At 200mm, this lens is actually sharper (200mm is this lens's sweet spot.) At 300mm, the lens is still sharp wide open, but I like to stop down to F/4.5 just to keep things super-sharp. Up to 250mm, I would not hesitate to use it wide open.
This Sigma lens has HSM which means the focus is fast and quiet. The lens focuses a little slower than the 70-200 F/2.8, but I've found that the 30D is more of a limiting factor in focus speed than the lens is. Servo tracking is very good with this lens, the only time it can't keep up is when track runners are sprinting straight at me (although again, I think the body is the limiting factor here.) For almost every other situation, the focus will definitely keep up.
All in all, this is not an indoor lens by any means, but as an outdoor sports (or wildlife/nature) lens, it is awesome.
Blazing fast focusing!! by .. Kam L. L. Lily ()
The HSM of this lens is faster than Nikon 80-200 on D70s (it hunt around 2 times when i tried to focus on my frd who was in blue/white stripes at opposite side of a tennis court walking to me) and Sigma 70-200 on 350D. How fast is that? I could say that it is as fast as the EF-S 18-55 kit lens! Do bear in mind, usually wide lenses focuses faster than tele.
Besides, the handling and build of this lens is good. Tripod mount made of metal. Holding the tripod ring and focusing ring feels great. I shaked this lens on intention, and hit it to a table... ( this is not my lens :P ) It works same well and not even a tiny scratch is done on the lens after all
However, it has some draw backs. 300mm focal length is a bit too long for me. F4.0 is a bit too narrow to use with 300mm indoor ... your photos may be blurred if you handheld them
Conclusion: It is a perfect lens (especially sports) if you use it under bright sunlight.
Sigma 100-300mm F4 EX DG IF Zoom Telephoto by .. D. Hills (Ottawa, Ohio)
This lens is the third Sigma lens I have purchased for my Sony A100 digital SLR. The lens is very well constructed. The mount is all metal. Auto focus is quick and accurate. I especially like the fact that all movement is internal. At 3 pounds, this is not a lightweight lens but it does not change length when zooming or focusing. This keeps the system very well balanced. The tripod mount is somewhat small compared to the Sigma 50-500 zoom but it secures the lens very well. Image sharpness at the minimum focusing distance of 71 inches is excellent. Image sharpness on distance shots at f4 is not good but improves at f5.6 and is very good at f8 thru f16.
I also own the Sigma 50-500mm f4-6.3 EX DG autofocus zoom lens. The image quality of the 100-300 zoom is better at all focal lengths than the 50-500 zoom. Image quality with the 50-500 zoom is best at 300mm but the 100-300 zoom is better.
Excellent optical and build quality. by .. Gary Craggs (Houston, Texas)
I can only add my unreserved enthusiasm for this lens to the technical reviews out there. I had one off ebay, rarely used it and sold it when strapped for cash, but then spent months craving it back. Finally a wonderful person in my life bought me a new one from Amazon and since when I've taken hundreds of sporting and street journalism images.
It handles and balances really well on my Nikon D2X, has solid zoom ring in a great position, smooth movement of manual focus override if needed, near silent use, non-rotating and non-extruding front element, removable tripod clamp. It feels like its hewn from solid volcanic rock and glass -in stark contrast to the Nikon 18-200mm which has essentially and almost literally fallen apart after 3 years. The long end of this is so much sharper, brighter to compose, and richer in quality (as well as longer in telephoto) than the Nikon. The wide end of that will soon be replaced by a 16-85mm. Highly recommended, and can't find the slightest niggle to complain about.
Good lense by .. Yvan Frechette (Quebec)
I use it with a 1.4X teleconverter and it still give me a very good image quality