Olympus M.ZUIKO DIGITAL ED 12-40mm F2.8 PRO lens review: Pro worthy performer

By Kevin Carter - Thursday November 14 2013

Lens Review
Introduction | Olympus best zoom measured on OM-D E-M5 | Olympus M.ZUIKO DIGITAL ED 12-40mm F2.8 PRO lens performance | Olympus M.ZUIKO DIGITAL ED 12-40mm F2.8 vs Panasonic LUMIX G X VARIO 12-35mm / F2.8 ASPH | Olympus M.ZUIKO DIGITAL ED 12-40mm F2.8 PRO vs Sigma 17-50mm F2.8 EX DC OS HSM vs Canon EF-S 17-55mm f/2.8 IS USM | Conclusion

If we compare the Olympus with rival constant aperture models designed for cameras with larger cropped sensors, specifically the Sigma 17-50mm and the older Canon EF-S 17-55mm f2.8, we can see that the new 12-40mm is on a par with those models.

Although sharpness levels are a little lower they are not dis-similar, especially considering the difference in pixel count between the E-M5 and Canon EOS 70D.

Distortion is less of an issue with the larger APS-C lens models, but in every other respect the 12-40mm compares favorably.