Tamron AF 28-300mm F3.5-6.3 XR Di A-mount lens review by jakubh70
|jakubh70#4236 date: Oct-14-2008|
flare control: 5
|ownership:||I used to own this lens|
|compared to:||Tamron 18-250 DiII|
Sigma 28-300, 70-300 APO, DG, APO DG, Minolta 100-300 APO, Minolta 75-300 New
|price paid:||200 GBP|
|positive:||Good sharpness, acceptable AF speed, 1:2,9 macro, best 28-300 ultrazoom I had.|
|negative:||Nothing special for ultrazoom lens...|
|comment:||Seems that my copy was the best one I could get. It was amazingly sharp throughout the range from F5,6-6,3 on, even at 300mm, being sharper than mentioned xx-300mm APO lenses above. At F8/300mm was as sharp as Minolta APO 100-300 at F8/210mm. Amazing? Yes, at least for me. Only 75-300 New was sharper, but with a lot more CA.|
From the other hand it was soft at F3,5-F4 apertures at wide end, but stopping down to F5,6-F8 helped to take excellent sharpness also here, apart of corners where some CA appeared. Beyond wide range CA was alomost invisible. AF works fast enough, much faster than in 18-250 and more precisely than in Sigma's.
One can say 6,3/300 is slow, but I like better sharp 6,3/300 than soft 5,6/300, that gives acceptable results when stopped down to 11/300, what was my 70-300 Sigma's and Minolta APO problem.
Last but not least - usable semi-macro mode, due to internal focusing this lens at 300mm zoom position and 0,5 m from object becomes ~150mm telemacro, achieving 1/2,9x ratio.
I have also Tamron 18-250 that is sharp from wide end wide open, but not so sharp over 150mm. I keep it as more usable for A700.