Test-review of M39 photo lens Industar 69 on Micro 4/3 sensor with crop-factor 1.3

At last I have a time to test M39 photo lens Industar 69 on Micro 4/3 sensor, it is designed for frame size, which is equal to APS-C sensor; so on Micro 4/3 matrix its crop-factor is 1.3 – in this amount of times its effective focal length is increased and its angle of view … Continue reading Test-review of M39 photo lens Industar 69 on Micro 4/3 sensor with crop-factor 1.3