Last weekend marked the end of the major fun fly events held in our region and as luck would have it the weather was near perfect. Nice skies, comfortable temps & light breezes. I had decided to once & for all take a risk & shoot a lot of the flying with my 7D and of all things a consumer level superzoom, the Tamron 18-270 VC, plus I also decided to try alternating my 35-350 L & 100-400 L between the 7D & my workhorse 1Ds2. The Tamron did very well, but as expected the AF was slow but once it started tracking a plane it stayed locked on. The 100-400 has always performed well on the 7D but I can't say the same for the old 35-350. It was almost as slow as the Tamron, & sometimes wouldn't find the plane at all until zoomed way back. Both L's snap into focus on the 1Ds2. I shot the Tamron in the morning, then retired it to do the other comparison.
7D, 18-270 at 270, VC off, 1/800 f8
same settings but at 184 mm
and this time at 55mm
1Ds2, 35-350 at 170mm, 1/800, f6.3
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