List Price: $1,999.95
Sale Price: $949.00
Today's Bonus: 53% Off
This new lens, part of the Di (designed for digital) initiative from Tamron is very well built light and balances well in hand.
It compares nicely with much more costlier Canon 100-400 L IS and compliments perfectly 70-200 type of lenses to extend telephoto reach to incredible 800mm on 1.6x crop camera.
Very sharp even wide-open from 200mm to 400mm it starts to slightly lose its edge at 500mm but still is very respectable. AF is quick and not very noisy. The lens can be hand-hold in broad daylight but is best used either with monopod or a good tripod (especially if you shoot in dusk conditions). Attaching optional 1.4x extender would allow to bring subjects up to 24 times closer compared to bare eyesight and still get a very high quality shot.
From the drawbacks there is slight lack of contrast comparing to 'L' (professional) lenses from Canon and slow F/6.3 apperture at the tele-end, making AF sometimes difficult with cameras that are not designed for AF after F/5.6 (such as 20D or Digital Rebel). Putting extender or/and Polarizer filter on lens would cut light that reaches the camera another 2-3 times, making this lens very slow and forcing Manual Focusing. So if you need the speed at such extreme reach, better consider prime (non-zoom) lenses.
The filter size is 86mm making finding an affordable quality filter for this lens a practical impossibility. But if you do manage to get a decent polarizer filter, using it would be much simplier then with any other large lenses due to included filter attachment ring. With any other lens the hood would be blocking access to the filter but thanks to this simple gadget, Tamron 200-500 can be used successfully with both filter and hood on.
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