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The other thing I’d say is if you’re regularly shooting shorter than 300mm is there are a number of excellent options at shorter focal lengths including two 70-200/2.8’s from Sony and one 70-180/2.8 from Tamron. Not to mention a couple of 135/1.8’s also native with excellent performance. The Sigma 120-300mm F2.8 DG OS HSM S lens has a large focus ring, and it is ridged for easier grip too. There are hard stops at both ends of the range, making it easier to set focus at infinity. Polariser users should be pleased that the massive 105mm filter thread doesn't rotate on focus.
Sigma 300mm f/2.8 EX DG HSM APO - Digital Cameras, Digital
On a Crop sensor, this lens is effectively a 450mm lens. That’s a nice focal length to be able to work with. The Sigma 300mm f2.8 made my Nikon D90 feel really small. It felt decent on a crop sensor but I preferred it on the full frame for the balance. Portraits Taken by Scott Wyden D800 f5.6, 1/80, ISO 100 The lens collar is a nightmare to use – rotation is anything but smooth. Shifting from horizontal to vertical was quite painful, especially when compared to Nikkor super teles. Additionally, while it is a nice feature that the collar/foot assembly can be removed (Nikon 200-400 cannot be removed), it cannot be done with a body attached, which significantly diminishes the convenience of that feature. And because the rotation of the collar is related to the removal of the collar, I was constantly worried about it coming off while shooting and shifting between horizontal and vertical orientation, although that was possibly just down to paranoia and unfamiliarity on my part. As a less-costly alternative to the camera manufacturer's telephoto lenses, Sigma, a manufacturer best known for its line of consumer camera lenses, offers three "big glass" telephoto and super-telephoto lenses in its professional grade "EX" series. After spending a few days in the field with their 300/2.8 HSM EX lens and an opportunity to closely examine it, I offer the following commentary and subjective review. Thailand and Vietnam have been the manufacturing hubs of AP South for many years. Many companies identified strategic risk in China and moved essential production facilities there many years ago.There are markings to easily align the camera to portrait mode when needed. It helped things go much faster. Build Quality
Sigma 300mm f2.8 EX APO HSM | BirdForum Sigma 300mm f2.8 EX APO HSM | BirdForum
What has changed is the standards for image quality. They are lower than they were 10 years ago because… ” Sony will continue to expand its attractive lens line-up to meet the demands and maximize the creative possibilities for all types of creators, including professionals, and expand the possibilities of artistic expression. Interesting announcement of this development in that it's a full year before the product's release. My thinking is that Sony had to act to provide certainty to sports photographers that they're still active in this space, and due to the 4 supertele releases of Nikon last year. I expect Nikon to release at least another 2 this year including something in this range. Is your mind able to grasp the concept of generation? I had high hopes but I am starting to get worried…Tamron produces a 300mm ƒ/2.8 for Canon, Nikon and Sony/Minolta mounts, slightly more expensive than the Sigma. We haven't yet tested this lens. The lens uses 46mm drop-in filters, but surprisingly, also has 112mm filter threads on the front for some giant filters. Considering a given generation of build technology and similar image quality the longer the lens the smaller the gap of weight btwn a x-y mm zoom and a y mm prime.
Sigma UK APO compatibility chart – Sigma UK
With 1.4x APO Tele Converter, AF can operate between infnity and 0.67m. If the subject is closer than 0.67m, only MF is available. Corner shading isn't much to write home about when the lens is mounted on the sub-frame 20D - the corners are just a quarter-stop darker than the center when used wide open at ƒ/2.8. Stop the lens down even to ƒ/4, and the shading goes away. The 300mm telephoto lens is widely used in sports and wildlife; situations with poor lighting (such as dusk and dawn for wildlife, and poorly-illuminate gyms for sports) make a fast ƒ/2.8 aperture almost mandatory. These lenses are typically big, heavy and... expensive. First I am comparing against the Canon lenses. The Canon 300 II has no equal IMO. Rarely use the Sigma lens now. This may be an interesting read for you. Especially since you bring this subject up regularly and pitch it as a negative I especially encourage you to read the end section to learn a little bit more about the people of Thailand..I think the Sigma 300mm f2.8 is a fine lens. Not quite as good as the Canon, but pretty decent value.. This thread has some images and comments that might be helpful.. Speculation on both sides, mines seem extremely reasonable when knowing the state of commercial photography, I am not criticizing that Sony dislikers do not like Sony. That is their job. Please continue to do so.
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