This is a test of the modified 900mm Tokina f/11 lens to look at depth of field and optical quality.

We're looking at a steel ruler at an oblique angle, about 9 feet away. Lines are etched every millimeter.

Depth of field is tiny...no more than 2mm.

This image is contrast boosted, but no unsharp masking has been applied.

Fairly happy with the optical quality for a catadioptric (combination of mirrors and lenses) supertelephoto at 900mm focal length.

#photography
#TokinaLens
#900mm
#MacroPhotography
#OpticalTesting