Sony FE PZ 28-135mm f/4 G OSS Review

October 12, 2015 | Jack Baker | Rating star Rating star Rating star Rating star

Sharpness at 85mm

Our sharpness tests were conducted using a 36.4-megapixel Sony Alpha 7R body and a sturdy tripod. The camera’s shutter release was also set on a timer-delay to avoid any possible camera shake. The test subject was shot using ambient lighting, hence some colour and contrast variation is to be expected between apertures.

At 85mm, centre sharpness is impressively high throughout the aperture range, apart from f/22 where diffraction causes slight softening. Move to the corners of frame and there’s noticeable softness at f/4 and f/5.6, though you’ll now need to stop down to f/16 to achieve respectable corner sharpness.

Aperture Centre Crop Edge Crop
f/4 Sony_SELP28135G-sharpness-85mm-f4-centre_crop.jpg Sony_SELP28135G-sharpness-85mm-f4-edge_crop.jpg
f/5.6 Sony_SELP28135G-sharpness-85mm-f5_6-centre_crop.jpg Sony_SELP28135G-sharpness-85mm-f5_6-edge_crop.jpg
f/8 Sony_SELP28135G-sharpness-85mm-f8-centre_crop.jpg Sony_SELP28135G-sharpness-85mm-f8-edge_crop.jpg
f/11 Sony_SELP28135G-sharpness-85mm-f11-centre_crop.jpg Sony_SELP28135G-sharpness-85mm-f11-edge_crop.jpg
f/16 Sony_SELP28135G-sharpness-85mm-f16-centre_crop.jpg Sony_SELP28135G-sharpness-85mm-f16-edge_crop.jpg
f/22 Sony_SELP28135G-sharpness-85mm-f22-centre_crop.jpg Sony_SELP28135G-sharpness-85mm-f22-edge_crop.jpg