I got the new G2 lens and tested it against the lens that it will replace: an adapted Canon EF 24-70 II and Sony 18-105 crop lens for walking about.
I tested against a row of trees at a distance of about 80 feet. Both lenses were focused manually at the center of the frame and triggered by self-timer from a sturdy tripod with no wind.
The good news is that both the Canon and the Tamron are very good to excellent in the center and at all apertures and throughout their zoom range.
Where things varied was at the extreme corners. I chose the upper right on both lenses as this is where both were slightly worse.
These are screenshots from C1 zoomed to 200%.
You can look along the bottom to see the settings.
The Canon is on the left side.
Both lens are very sharp at their widest end, regardless of aperture. The Canon exhibits less CA, is warmer and I'll really will miss that extra 4mm on the wide end.
This starts at both lenses wide end (24 and 28mm). I won't bother with a f8 example as its not much different from the wide-open example below:
Next is 35mm at f2.8 and then f8:
In the corners the Tamron is sharper.
Next at 50mm:
Both are close with the Tamron ahead.
Next at 70mm:
Both still close with the Tamron ahead.
When I specifically focused for the corner, both lenses turned in a slightly better result, but the Tamron was still sharper above 35mm.
Now Compared to the Stellar Sigma 14-24 DN:
The Sigma is sharper, but only if you're pixel-peeping.
We also tested against the Sony 16-35GM and it even (slightly) beat it.
On my R3 the lens focused quickly and accurately. Eye AF had no problems with the deer or other subjects.
I wanted this mainly as a light walkabout lens. See my prior post on this thread for my reasoning.
So yea, I'm loving it!
Nov 04, 2021 at 10:52 AM
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