As always, fast delivery from Amazon, well and securely packaged. After unpacking, oh man what a lens. the quality of the lens is beyond any doubt. nothing rattles, all very high quality and as already mentioned there is a Zeiss looks and feels pretty darn close. It does not have to hide behind a L on the contrary ... even the Geli is high, although it is also made of plastic but has a rubber coating to make it easy to rotate. Flocking inside absent as usual with Canon L but you can live with. Yes it's hard, almost a kilo but as the saying goes .... of Nothing comes from nothing. The zoom ring is tired and goes hard with the time which is anyway a little looser so good that it is so fixed. Disadvantage the ring for manual focusing is quite narrow so for filmmakers possibly a disadvantage. For the autofocus is inaudible. So much for objective per se.
now part of the unfortunately means work. Yes it is true, at 24mm and F4 the corners are dark, but I have also seen with my Canon in the test. In full-frame which is of course extremely visible. At the APS-C, however, these problems are not visible. This problem at the full frame can be counteracted by stopping down to F8 if you want to save work in the Raw converter. Otherwise I can only say positive for the Sigma, it is sharp and the image quality is on semi or hobby quality. I do not know if my lens is extremely well or other so bad. I would also allow me not about judgment and can only speak of my lens. Even at maximum aperture over the entire focal length range is mine sharp. From 50 mm also the problem of dark corners is no longer available.
The stabilization is silent, also inaudible, and nailed the image fixed unless you exaggerating. I have the Sigma 50-500 APO OS and because of the stability more than audible, everyone knows within is now ah, he takes a photo. Nothing in this lens !!!
Because, unfortunately, and so is at Adobe in any program, so neither Lightroom, Photoshop and so a correction profile available for the lens, you can now compensate for the so manually or do the work once and create a profile yourself. I have decided to create a profile with the Adobe Lens Profile Creator. This is to get free from Adobe and after 8 photos according to the instructions of a template and calculate something on the computer you have your profile the camera and the lens.
Conclusion: Yes, it is big and heavy but I like a little weight and prefer quality and a little drag as ne rattling plastic lens. I think, I, I emphasize that the Canon is if not the Sigma equal even better. In any case, it is not bad at all. The focus is too narrow for films intended not optimal but I only take pictures. If you can live with its own lens profile to create one it is and so by Adobe, then you have a very good lens on the cutting edge of technology and can with a nice A specify instead a red ring -D At APS C cameras, it is still better than in full-frame cameras because the corners are not shown but of sharpness colors etc. top. Personally, I would recommend anyone the Sigma instead of the Canon even if the Sigma demands with 82MM diameter filter new filter. Although I like Canon lenses but am not a fanboy of Canons only have to buy .... it comes to quality, price and performance, and there's the mom. Sigma earlier to my mind.
Actually a 5 star lens but the narrow focus ring and the one still in raw create his own profile needs is a deduction, said that is not guilty of Sigma in the RAW converter but even in the beta version of the new Raw's the Sigma is not present .... But you just have to make and the Canon does not. But saying that 15 minutes work and you're done.
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