>>4205246>>4204805Just stick to your A7RIII. The only thing better is spending as much money as possible on canon's shit (R6 II or better, EF adapter, RF L glass, EF L glass), or spending even more money on newer sony bodies.
You have a fairly recent sony (a7iii/a7riii/a7c onwards). You have direct adapter-free access to some of the best native lenses currently available period or for your dollar, as well as optics-free adapter access to sony/minolta SSM/USM A mount (LA-EA3), canon EF mount, post AF-D nikon F mount, and even later pentax K mount lenses. With the LA-EA4, you have autofocus (with an SLT system) with older A mount lenses as well. Add capture one and you get some of the best color science on mirrorless immediately upon import with the prostandard profile, and some of the most user friendly tools for adjusting it to your liking. Photographically, you are set, and you have very little to ask for except absolute nitpicks.
What do you find lacking here, before going into the sigma/tamron/samyangs and all the lenses you can adapt from canikon?
>excellent autofocus tracking until the frame edge>16-35 f2.8 GM>16-35 f4 PZ>20-70 f4>20mm f1.8>35mm f1.4 GM>40mm f2.5>50mm f2.5>50mm f1.4 GM>55mm f1.8 (sovl combo)>85mm f1.8 (sovl combo)>90mm f2.8 macro>70-200 f4 G II 0.5x macro>70-200 f2.8 GM IIAll of these are some of the best on the market in one way or another (inb4 nikkor's 50-85 combo is sharper, yeah but ugly OOF transition and bokeh)
Maybe you just feel in over your head, maybe you have buyers remorse. Just use the camera you have.
>>4205210Mate you've never stitched an image with a telephoto and a shift plate. Parallax correcting on the tripod makes it seamless.