Sigma 5,0-6,3/150-600 DG OS N/AF HSM Contemporary Canon

Naturally this is a big and heavy lens, and with the tripod mount it works extremely well in all lighting conditions as you would expect. The image quality is excellent and I've attached a photo of a robin with some zoomed in insets to give you an idea. If you look carefully you can see the reflection of my house against the blue sky in the Robins Eye. It's that sharp. However, it doesn't stop there. That image was taken hand held at the full 600mm zoom. Yes, the light was good, and I'm using a Canon 6D at 1000 ISO, but to me at least that is pretty impressive. The autofocus was almost instant and spot on. Being a big telephoto, you are having to be at least 2-3 meters from the subject for focus! The other feature I like is the manual focus override. If you have the time, and birds are not very patient usually, you can fine tune the autofocus manually.The second sample was taken at night indoors and also handheld. This was at maximum ISO and the autofocus does hunt around a bit, but not bad for hand held indoors at 600mm. There is a feature to set the autofocus range to basically near or far and that reduces the hunt time in low light. You can see here that at max aperture the depth of field is insanely narrow, so when doing wild life stuff it's better to go up to F11 or so and have a higher ISO unless you have manged to squash your subject flat somehow.So the final picture was hand held at around 500mm with the lens resting on a railing to provide some extra stability. The bottom left inset shows the sharpness that can be delivered, the numbers on the blue container are perfectly readable. Again this was at 1000 ISO.I was a bit worried about getting this in my backpack, but the solid zoom cover is reversible and it all fits in very nicely after a bit of reorganisation.I've not bothered with the USB tuner. The results are amazing without it. But I can see how it might be useful.Finally, don't bother with a 1.4x converter. The images are better if you just crop! Sigma do seem to make very good lenses! My Sigma 12-24mm ultra-wide angle is also excellent!

Super lens of it's type, image quality is excellent but please bear in mind that a prime lens will always be sharper. Heavy, yes but that aids stability in my book. For those who are wandering whether you can use the lens on a crop sensor camera the answer is a resounding yes, I use it with the Nikon D500 with terrific results when the lens in effect becomes 225-900mm! I would be inclined to wind it back from the maximum zoom, just a tad, sometimes at max' specially in low light I find a very small deterioration in image quality, very small. To help you out further the attached snap of the Robin was taken at 400mm, 1/1000sec to reduce any shake, ISO 2,500 any noise removed in post. Nikon D500. Super lens for the money.

I'll start off by saying I'm a rank amateur photographer, just a hobbiest really, but felt I needed a telescopic lens purely for animal pictures. I opted for the Sigma lens because A) price wise it was perfect, B) I've already got a Sigma 70-300mm and it is a great lens.I use it with a Nikon 5600, no issues at all. It does have a bit of weight, you'll notice it immediately, but get used to it very quickly. The auto focus is quick and reliable, if you know you're camera, you'll be fine. Everything I've done with it so far has been free hand, it comes with a tripod handle (standard sized fitting) but I've not used it as of yet, it does make a good grip when carrying it around.The pictures I've added are of my first time out with it, picked a good day to practise with a touch of local knowledge and luck, and feel I've done not bad. Basically if I can manage it, anyone can.I've pushed the lens (and arguably my camera) to its absolute limit when taking pictures of deer at sundown, at full 600mm focal length, the pictures came out fine, but there came a point when the limit of f stop and ISO meant I didn't have time on my side, but this is a limit of any lens.The equivalent Nikon lens is around £300 more, so this one is perfect if the Nikon is out of budget.If I've one negative, it is the Sigma warranty. There is a 3 year warranty, but it isn't available for lenses bought via Amazon. When I've attempted to register it, I get an email stating it is not a genuine UK import so the warranty doesn't apply. So if you want the warranty, its an additional £41. I'm not sure if this is something Amazon is aware of and can assist with, but Sigma aren't budging on the matter.Anyway, brilliant lens, definitely worth it if you've any desire to photograph wildlife. At 300mm I was pretty restricted, even when cropping, at 600mm with cropping I'm not chasing an animal and only getting pics of its ass!

What a brilliant long reaching lens this is! It takes stunning sharp images and is ideal for nature and aviation photography. The attached images were taken using this Sigma lens. I would highly recommend this lens!