Sigma 70-300mm F/4-5.6

Sigma 70-300mm F/4-5.6
Sigma 70-300mm F/4-5.6 DG OS SLD Super Multi-Layer Coated Telephoto Lens for Canon AF Mount Digital SLR Cameras

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By Joshua Gustafson
I own the older non-OS version of this lens but thought I'd upgrade to the OS version. It was a waste of money and I ended up returning it.



First the optical stabilization is no better than the in-body stabilization on my K10D - and I understand the newer bodies have improved the IS. After dozens of comparison shots between in-lens stabilization and in-body stabilization - test patterns field shots various lighting conditions - I was forced to conclude the lens had absolutely no advantage over the body at all. Worse it's a nuisance when swapping lenses since you need to remember to switch off the in-body stabilization when you attach the lens then switch it back on when you swap another lens on. Forget and you get a batch of blurry shots.



Given that Sigma charges twice as much for their stabilized lenses as for their non-stabilized ones having that stabilization be useless is kinda a big deal.



The motor - yes the lens is motorized but it's nothing fancy. The lens motor is neither faster nor quieter than the in-body motor.



Image quality wasn't noticeably different from the non-OS version.



Also the non-OS version of this lens has macro focusing up to 1:2 magnification. Sigma apparently had to sacrifice that to fit the stabilization.



If you're considering this lens (at least for a Pentax body) do yourself a favor - buy the non-OS version at half the price: Sigma 70-300mm f/4-5.6 DG APO Macro Telephoto Zoom Lens for Pentax and Samsung SLR Cameras