Moving from Canon M system

Laqup wrote:

If you get the R8 + 24-240 (414g + 750g), you can pretty much replace:

Canon EF-M 22mm f/2.0
Canon EF-M 15-45mm f/3.5-6.3 IS STM
Canon EF-M 55-200mm f/4.5-6.3 IS STM

with a single lens. Of course with the execption of the tele range beyond 240mm.

In pure terms of "optical output" the zoom will be somewhat similar to the 22 f/2.0 that is actually an 35 f/3.2 in FF terms (only image look, for exposure f/2.0 is f/2.0, to be clear!)

Wide angle can be covered with the Canon RF 15-30mm (390g) or RF 16mm f/2.8 (165g), and the EF-M 32mm is logically replaced by the RF 50mm 1.8 (160g).

R8 + RF 24-240 + RF 16 + RF 50 will net you a total of 1489g.

Of course all of this is a trade-off. The R8 will be much more capable and the better body compared to the R50, but you have to lug around more weight "in hand" in combination with those FF lenses and you gain some volume. On the other side, the zoom gives you additional creative possibilities (as f/4.0 - f/6.3 cleary outperforms f/3.5 -f/6.3 on APS-C in the overlapping range) with the 50mm not being an exception (50mm 1.8 will yield shallower depth of field than 32mm 1.4). Build quality and some of the optical attributes of the 32mm 1.4 might be better though. Overall image quality will probably be slightly better, as the 15-45 and 55-200 are nothing to write home about (allthough performance of the 55-200 is solid for it's size and volume).

From my point of view I would not "rebuy" all of those to a certain degree similar RF-S lenses (yes I know that there are slight differences to EF-M) but I would rather try to seek an actual solid upgrade. If it has to be APS-C due to weight limitations I would not hesitate to buy a fuji body. The APS-C RF bodies are either sold as "complementary" to their bigger brothers (e.g. R7 for wildlife) or meant as some kind of "affordable bait" to lure you into the RF fullframe system (R50, R10) and to have an upgrade path. I see no clear intention from Canon to actually put out a full fledged RF-S system, this will probably be similar to the EF-M system, aka 1-2 new lenses per year and a few body upgrades in between.

I advise against the 24-240, I owned it, it was not a “fun” lens. Too bulky. Consider the RF24-105, either or the 24-50. It’s more M-like. Trust me as a former M owner, fun factor is a thing. The 24-240 struggled indoors with AF, couldn’t do macro distances, swung around a ton, and had clinical rendering. It’s certainly sharp, reach, but fun? Nope. Consider the RF-S 18-150 instead.