Anamorphic sharpness test – BMPCC4k, Leica R Lenses, and Kowa 8-Z: 135mm f2.8

Note: this video was focused by two synchronized motors linearly. So the result is inaccurate.

Sharpness test for Leica Elimarit R 135mm f2.8 and Kowa 8-Z on BMPCC4k.


@2.8 (wide open) is usable (sharpness is acceptable) from 2.5 meters distance.
@4.0 (1 stop close) is usable from 2.0 meters.
@5.6 (2 stop close) is usable from 1.5 meters (nearest).

Actually it depends on the taste of the project. Refer the following test movies for the taste.

Test movie




side by side


Full resolution screengrabs



Technical data

Object distance

1.6, 2.0, 2.5, 3.0m


Metabones Speedbooster XL 0.64x
Leica Elmarit R 135mm f2.8 @2.8, @4.0, @5.6
Kowa 8-z 2x anamorphic
(No Variable-Diopter)


fps: 24
Shutter: 45, 90, 180
ISO: 100
BRAW 4K DCI (4096 x 2160) 3:1
Crop factor: 1.22x ( = 1.9 x 0.64 )


Colored with Davinci Resolve 16 (contrast only)
No crop.

Deliver setting

Youtube 2160p
Resolution: 4096 x 1716 DCI Scope 2.39
Format: QuickTime
Video Codec: H.264
Audio: Main 1 (Stereo)
Audio Codec: Linear PCM

%d bloggers like this: