Are you smarter than a 55-300? For this Bigmos, the answer is no.

Started 4 months ago | Discussions thread
audiobomber
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Lenstip on sharpness
In reply to paulkienitz, 4 months ago

"At 500 mm, in the case of the Sigma 150 – 500 mm, the maximum aperture is f/6.3. To free it from most of the aberrations you will need it use the aperture of about f/13-16. At that point, though, the diffraction becomes a serious limitation on the lens’s achievements and that’s why the MTF values couldn’t reach much above the 30 lpmm level."

"The lens fares exceedingly well at 150 mm; at 250 mm it’s performance is average, then, unfortunately, it decreases further. The performance at the maximum relative aperture is especially weak, at the longest focal lengths crossing just 20 lpmm level."

http://www.lenstip.com/184.4-Lens_review-Sigma_150-500_mm_f_5.0-6.3_APO_DG_OS_HSM_Image_resolution.html

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Dan

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