Sony 70-200 f/2.8 G
Minolta 135mm f/2.8 (another 20 years old lens)
Sony 135mm T4.5 STF.
The STF will be compared at its geometric apertures, that is f/2.8 and f/4.0. These two apertures are darker than for the other lenses (this is why they are called T4.5 and T5.6), but the depth of field is the same than for the other lenses at f/2.8 and f/4.0.
I did not use smaller apertures for the STF, they do not really make sense with that lens. Neither does it make much sense to use the lens as infinity, as is almost the case here, this is just for comparison purposes.
f-stop | Minolta 135mm f/2.8 | Sony 70-200 f/2.8 G | Sony 135mm STF |
f/2.8-T4.5 |  |  |  |
f/4-T5.6 |  |  |  |
f/5.6 |  |  | |
f/8 |  |  | |
f/11 |  |  |
All 3 lenses are already almost perfect at full aperture. The pleasant surprise comes from the small and light 135mm f/2.8 here... it really is a pity that Minolta or Sony discontinued making these small primes.
