Doug what is your opinion of this lens compared with fix lens on iq 250?
Few things for sure - it's a very different lens from a practical point of view than the 55LS, or 80LS:
- heavier
- larger
- more expensive
- max aperture is smaller
Other than that it's still quite early for me to make any sweeping statements in comparison. I'm thousands of shots into the 55LS, 80LS across a large variety of subject matters and scenes and only a hundred shots into the 40-80LS on one day in one environment.
Gut feeling is if the price and weight aren't problematic for your intended use (or are acceptable compromises) then you'll be quite happy with the image quality the 40-80 produces.
Feel free to ping me at my email and I'll share the rest of the raws from our testing for you to evaluate on other metrics than the edge/corner sharpness we were evaluating in the jpgs posted, or to arrange your own testing.