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Sigma 120-300 mm f/2.8 APO EX DG OS HSM
Specifications:
| Manufacturer | Sigma |
|---|---|
| Model | 120-300 mm f/2.8 APO EX DG OS HSM |
| Lens style | Telephoto zoom |
| Focal length | 120 - 300 mm |
| Maximum aperture | f/2.8 |
| Angle of view | 20.4 - 8.2 o |
| Closest focusing distance | 1.5 m |
| Maximum magnification | 8.1 |
| Minimum aperture | 22 |
| Number of diaphragm blades | 9 |
| Auto focus type | HSM |
| Lens Construction | 23 elements / 18 groups |
| Filter diameter | 105 mm |
| Macro | No |
| Available mounts | Canon EF Nikon F Sony A / Minolta Sigma Pentax K Four Thirds |
| Dimensions | 289.2 x 114.4 mm |
| Weight | 0 g |
| Additional information | 2 FLD and 1 SLD elements |
Average rating (3 owners reviews).
| Build quality | 3.67 |    |
|---|---|---|
| Optical quality | 4.00 | |
| Value for money | 3.33 | |
| Overall | 3.67 | |
| Build quality |  |
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| Overall | |
Owner since: 1 month
Price:
User profile: Semipro
Cons: Unreliable autofocus particularly on moving subjects. Poor quallity control from Sigma, reliability in the long term questionable.
Pros: Excellent optics, flexibility. Very good with 1.4X teleconverter.
Summary: I had three of these and not one of them was able to focus reliably on even slow moving objects. I really wanted this lens to work as the optics were superb and provide great flexibility however after encountering the same back focus with three in a row I gave up and bought Nikon. Do not buy unless you have right of return!
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Owner since: 1 month
Price: A$2,400
User profile: Semipro
Cons: The link below will take you to the whale shots... only low res e-mail size grade but will get the idea...
Pros: http://www.meetup.com/Manly-Beach-Adventure-Photography-Group/photos/2023691/63727632/#68094062 I am on top of a 200ft head land - Sydney's north head Australia
Summary: http://www.meetup.com/Manly-Beach-Adventure-Photography-Group/photos/2023691/63727632/#68094062
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Owner since: 1 month
Price: A$2,400
User profile: Semipro
Cons: It is a big heavy lens 2.6kg or 91.7 ozs
Pros: I bought this lens to use on my Canon 7D (9 frames a second) with a crop sensor of 1.6.. Obviously the crop ration gives this lens the effect or frame fill of a 480... so 480 at f2.8 at 9 frames sec - fantastic. I also use a Kenko 1.4 teleconverter. I put this kit on a Manfroto mono pole with a tilt head. So far I have shoot whales from the cliff tops and the shots are amazing. The lens internally zooms and I like the constant barrel diameter because it's easy to stabilise - stop the shakes. With the 1.4 it goes optically to 420 at f4 ....very nice.. So the best aspect of this lens is that you get loads of options from 120 to 420 as such.. Portraitures are stunning .. I could actually see the reflection of myself in the retina of my models eye on test and in the photo. So far I am very happy with this wonderfully flexible lens. Before I was using the 150-500 sigma.. I still use the Canon 70-200 f4 and I have tried and used the Canon 600 f4 ($9,000-) nothing beats that.
Summary: A fast lens ...quick to focus and provides a phenomenal focal range. Lots of uses. The shots I have got so far only come from owning this lens. That is whales swimming towards you and being able to change the focal length..
