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Sigma 70mm F2.8 EX DG MACRO

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Review Date: Jun 8, 2014 Recommend? yes | Price paid: Not Indicated | Rating: 10 

 
Pros: Exceptionally sharp; great focal length for cropped-sensor cameras as one can fit more of the whole flower within the frame; affordable; good build quality.
Cons:
Slow screw-driven AF, but I use MF for closeups; relatively heavy; lens hood bulky--I use cheap collapsible rubber one.

I've used this for years on both Pentax and Canon DSLRs with excellent results. Perfect focal length for cropped-sensor bodies, you don't feel cramped within the frame as a 100-ish lens would provide.

Super sharp and well made.


 
Tamron 150-600MM F/5-6.3 DI VC USD

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Review Date: Apr 10, 2014 Recommend? no | Price paid: $1,069.00 | Rating: 4 

 
Pros: Build quality Ergonomics Convenience Price Image stabilization Relative weight
Cons:
Poor performance with action/BIFs on both 7D & 5DMK3 Tamron's non-acknowledgement of consistent issues noted in Canon forum

I owned this lens for about two weeks in March. During this time I tested it for both static subjects and moving subjects in excellent light with my 7D and 5DMK3 bodies. I have several years experience shooting sports and birds with the Canon 100-400mm L and the Sigma Bigma (50-500mm) lenses.

The Tamron was a very mixed bag. I enjoyed the feel-in-hand, the weight was reasonable considering the focal range, the quality of materials was very good, and the price was a bargain--if--you are OK with it not functioning very well on BIFs. After at least 1000 shots I found that it would not lock on a moving bird in the 400-600mm range with either camera. Whereas a few minutes prior it would provide very acceptable results on an easy-to-focus static Great Blue Heron or a sparrow. I grew too frustrated and returned the lens during the allowable window.

That I have seen some great BIF results from others, makes me wonder if the quality variation is vast among copies. I've also considered purchasing another copy, because this lens' focal range at this price point is valuable.

M