Sony a7CR

“I don’t see how you’d upgrade your camera for only $400 from an A7IV to an A7CR. The A7IV is often discounted to $2100 *new* these days, so the used value means you’d probably be looking at $1000+ difference unless you’re still in the return window for your A7IV. I also think you’re overestimating the difference in resolution. If you take a 61MP photo with the A7CR at 400mm and crop that to an equivalent of a 600mm lens, you’d be left with 27MP… which is less than you’d have with your 33MP sensor on a 600mm lens. And saying it’s “only” 600mm dismisses the fact that you *can* use a teleconverter like you’re already doing. TCs are problematic in general, but you seem happy with your current experience, so I can’t imagine it would be much different on the 200-600.”