LensTip.com

Lens review

Tamron SP AF 70-200 mm f/2.8 Di LD (IF) MACRO

29 July 2009
Arkadiusz Olech

6. Distortion



Please Support Us

The coronavirus crisis has been adversely affecting many businesses and, sad but true, ours is not an exception. Despite that difficult situation we would like to preserve continuity and high quality of publications available on all our websites. Still, we are now aware it might be impossible without additional financial help. That's why we would like to ask all those who visit, read, and care about Optyczne.pl, LensTip.com i Allbinos.com for support - it's enough you send us a small sum of money via PayPal. If a lot people decide to support our websites we think we'll stand a chance and survive next months without any lasting harm. We count on your support and understanding, stay safe and be healthy.

- - - - - - - - - - - - - - - - - advertisement - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

In this chapter, once again we should start by reminding ourselves the achievements of the Tamron’s competitors. At once we must say that, in this category, the frame distortion has never been a serious problem. The Canon 70-200 mm f/2.8 IS had the distortion level in the range from -0.39% do 0.54%., proportionally to the increase of the focal length. For the Canon without the image stabilization, the range was from -0.49% to 0.49%, for the Sigma 70-200 mm, tested on the Canon 20D body, the results were from -0.47% to 0.80%.

The achievements of the Tamron are very much the same. At the shortest focal lengths we had a slight barrel distortion of –0.46%, which, at 135 mm turned into a 0.36% pincushion. The highest value of this aberration we noticed at the maximum focal length with the result of 0.64%. After the connection to a converter, so at 280 mm focal length, the result, within the margin of error, was similar to that at 200 mm and amounted to 0.67%.

Tamron SP AF 70-200 mm f/2.8 Di LD (IF) MACRO - Distortion

Tamron SP AF 70-200 mm f/2.8 Di LD (IF) MACRO - Distortion

Tamron SP AF 70-200 mm f/2.8 Di LD (IF) MACRO - Distortion

Tamron SP AF 70-200 mm f/2.8 Di LD (IF) MACRO - Distortion