I use crop mode every time versus cropping in post when shooting wildlife because the autofocus works better when the subject is bigger in viewfinder.
Obviously you'd prefer to have full frame shots, so I wouldn't give up the reach of the 200-600. I like my 200-600 and 70-350 (APSC) combo. 200-600 if I'm not walking far, 70-350 if I am.
Image quality from an R4 in crop mode will be very slightly better than an a6xxx body.
Jan 06, 2022 at 08:52 PM
Previous versions of lawa222's message #15820672 « APS-C crop mode with high resolution bodies »
