I have made a comparative of sharpness of the Tamron vs. Sony 24-70 2.8 GM / 24.105 4.0 / 85 1.8 based on Amateur Photographer Tests (MTF 50).
The results are:
CENTER
WIDE Worst than Sony GM at all f/numbers ■ Worst than Sony 24 -105 from ≈ f/7.0
50mm Better (a bit) than Sony GM at all f/numbers ■Better than Sony 24-105 at all f/numbers
TELE Better (a bit) than Sony GM except at f/2.8 ■Similar to Sony GM at all f/numbers
CORNER
WIDE Better than Sony GM except at f/2.8 ■ Similar to Sony 24-105 at all f/numbers
50mm Better (a bit) than Sony GM at all f/numbers ■ Better than Sony 24-105 at all f/numbers
TELE Similar to Sony 85 except at f/2.8 (worst) ■ Worst than Sony 85 at f/2.8 – a bit worst on rest
I have made a comparative of sharpness of the Tamron vs. Sony 24-70 2.8 GM / 24.105 4.0 / 85 1.8 based on Amateur Photographer Tests (MTF 50).
The results are:
CENTER
WIDE Worst than Sony GM at all f/numbers ■ Worst than Sony 24 -105 from ≈ f/7.0
50mm Better (a bit) than Sony GM at all f/numbers ■Better than Sony 24-105 at all f/numbers
TELE Better (a bit) than Sony GM except at f/2.8 ■Similar to Sony GM at all f/numbers
CORNER
WIDE Better than Sony GM except at f/2.8 ■ Similar to Sony 24-105 at all f/numbers
50mm Better (a bit) than Sony GM at all f/numbers ■ Better than Sony 24-105 at all f/numbers
TELE Similar to Sony 85 except at f/2.8 (worst) ■ Worst than Sony 85 at f/2.8 – a bit worst on rest
