pretty standard to loose contrast wide open, eevn the fabled 14-24 does.
why not just increase the contrast in post?
nothing to worry about from what i can see.
Joseph, I don't think there's a zoom on the planet that does not increase contrast at least slightly on stopping down from wide open. OTOH, I have used that lens wide open for at least half of the many images I have taken with it. Usually other factors render an image non-usable long before contrast is considered. It's an excellent, but heavy, lens in my experience. cheers, kl
It's also normal for sharpness to increase a bit as the lens is stopped down. Rule of thumb is that best sharpness is 2-3 stops down from wide open.........
Isn't that the case with almost all but the greatest-of-the-greatest lenses? 2-3 stops down will increase IQ a lot.
I know there's exceptions though but mostly with primes (at least from the lenses I've used). My 500 f/4 is best wide open... I'm sure the 200 f/2 is best wide open.
That is pretty much the case with all lenses, they are at their best in the middle of the f-stop range. There are exceptions......
Focus point is very critical wide open, and manual focus introduces other variables beyond those of just the lens optics alone. I don't see anything wrong with the shots provided, the bigger issue with lenses is usually uneven focus accuracy from one area to another under flat field conditions.
