Nice photos, I haven’t bought the RF extenders, and while I own both the EF’s, I haven’t ever shot with them, but given the amount of EF glass I have, I figure it better to have them and not need them, than to need them, and not be able to get them. I used the Sigma 1.4 on the 150-600 Sigma lens to shoot the moon, and occasionally flip the 1.4x into position on the EF 200-400 f4L +1.4x.
It was nice of you to share the photos, to see what the RF 2x can do on the Z.
I shot a dragon fly resting on a croc and flies on a caiman, but unfortunately the photos were too shallow of depth of field. I saw your photos and it I thought, great pictures, but man, if only all the wings were crisp or the entire butterfly was in focus, with the background blown out like it is, they would be National Geographicesque, I know, next to impossible with a dragonfly in flight.
I just don’t think I am ready to spend $589 for 1.4x and a loss of a stop of light, mentally, I think I prefer to shoot APS-C for the 1.6 crop factor, hence the interest in a high-end R7 II, and the thought of $689, while giving up two stops of light, has me hoping they come through with a $5-6K L tele zoom, c’mon Canon, don’t let us down.