Well, your sample crops show grey letters rather than black ones. I'm really baffled that this shall be normal unless you used a linear tone curve or maybe those letters aren't black in the first place. If such a prime lens can't produce deep blacks at f/4, then ...
Were these sample crops taken at ISO 3200 or so ?
Maybe I shouldn't provoke so much ;-)
Were these sample crops taken at ISO 3200 or so ?
Maybe I shouldn't provoke so much ;-)