While it is easy to sit in one location and create a wide variety of subject framing from this lens, don't let the huge focal length range make you lazy.
But, if you are able to move closer and the less-compressed closer point of view results in a better perspective for your subject and its surroundings, move closer.
From 200mm through 400mm, the Canon is the clear winner even stopped down.
Subjects remain very similarly sized as they go into and out of focus.CA slowly improves/reduces with focal length increase until CA becomes hard to notice from about 135mm through 300mm.To see what the 50-500mm focal length range looks like, I take you to the local kid's park where a game no one had envisioned when I was a kid has been installed.This lens was good up to somewhere in the 200-something mm range.The 9-blade aperture creates nicely-rounded out of focus highlights with nicely smooth centers.These findings apply to both One Shot mode and to the always more challenging AI Servo mode.Featuring a 10x focal length range (500mm/50mm 10x) that starts with 50mm, this lens can cover a huge range of needs.The Sigma 50-500 OS is a lens that breaks this norm.Uncorrected, CA will have an impact on peripheral image circle image sharpness.The Tamron is the lens I most recently reviewed.With a 5D Mark III behind it, I captured hundreds of shots of athletes in action with the majority of those images being properly focused.Sometimes a lens can be made compatible by the manufacturer, sometimes not.Use perspective for composition when possible.A narrow aperture lens, with its relatively deep depth of field, does not challenge AF accuracy as much as a wide aperture lens in the same focal length does, but I am finding this lens to focus accurately with reasonable consistency.The 300mm results show a significant turn for the worse and 400mm wide open aperture results are noticeably worse than the 300mm results.That said, the strong background blur creatable by using a long focal length, especially with a close subject, is very attractive.Sigma DP2x Brochure.83 MB, sigma Flashgun Brochure.96 MB, sigma In jane austen emma pdf The News.96 MB, brochures have been created in the PDF (Portable Document Format) file format using Adobe Acrobat.Sigma SD1 Merrill pilot down behind enemy lines crack User's Manual.89 MB, sigma SD1 User's Manual.02 MB, sigma SD15 User's Manual.79 MB, sigma SD14 User's Manual.52.Lens hoods are useful for both lens protection and from flare protection (which this lens especially appreciates).Sigma SD10 User's Manual.91 MB, sigma SD9 User's Manual.05 MB PhotoPro.4.1 (Ver.5.4.1) for Win.59 MB PhotoPro.4.1 (Ver.5.4.1) for Mac.19 MB Sigma dp1 Quattro User's Manual.8 MB Sigma dp2 Quattro User's Manual.69 MB Sigma dp3 Quattro Users' Manual.The best option is to hold the lens just forward of the focus ring and deal with the slight imbalance.
While Sigma refers to the 50-500 OS as an all-in-one lens, most photographers are going to minimally want a general purpose zoom lens in their kit in addition to this one.
Home support downloads, brochures, sigma Lens Brochure.50 MB, sigma SD1 Merrill Brochure.00.