I find myself gravitating to nature photography. My “long” lens used to be a Sony G 70-300, A mount that worked (via adapter) with all my previous E mount Sony cameras.A supurb lens. Until I got to the A7IV series, that is, same camera as yours.
I tried to replace it with a Tamron 70-300 but the image is missing something. The Tamron does workman like images, see image below, but it is missing the “pop”, I don’t know how to describe it, the something special that I got with the Sony. I go back through my photos and am really surprised at how many of my very best came from that lens.
I’m now lusting for the very new, now really released yet but heavily reviewed Sony 70-200 F4 GII lens. Apparently it also takes incredible images through a 2x converter or I could also shoot it through my ASP-C sensor A6400, which would change it to a 105-350 mm in case I need something taller. It seems to have the same, how do you say, ‘glow” as my 10-year-old lens does/did.
In the meantime, my Tamron is sitting dejected over in the corner saying, “What am I, chopped liver?” No, actually pretty damned good for the price but when you’re reaching for the stars—–
Tamron Shots below

Pretty good lenses don’t have to cost a lot. Here’s a 30mm f2.8 Sigma on my Sony A6400.

Another Tamron

