CANON 90D vs CANON R10

thunder storm wrote:

amos roth wrote:

Hello, I decided to replace my old CANON 600D, which I owned for +10 years.

Since all my lenses are CANON / for CANON (18-135IS, 50mm 1.8, 17-55mm 2.8, Sigma 10-20mm), I've doubts about 2 optiion: the CANON 90D, or to switch to mirrorless - the R10 (which is approx. the same budget).

The problem: at this point it's uncertain if Canon will bring out RF-s replacements for all your current EF-s lenses. The 18-135mm is kind of replaceable with the RF-s 18-150mm (check AF speed though), the 50mm is a full frame lens and can be replaced by the RF 50mm f/1.8 stm. A wide angle zoom will likely happen, but to my eye it's highly unlikely we will see something like that EF-s f/2.8 standard zoom for the RF mount.

All four can be used seamlessly with the EF-EOS R adapter, so there are no mission-critical issues whatsoever.

The RF 18-150 doesn't just "kind of replace" the EF 18-135, it fully replaces it and beats it in several ways including lighter weight and much better close focusing.

At this point there is no native RF-S mount ultrawide, but an 11-22 based on the highly-regarded EF-M lens is strongly rumoured for the first half of this year. Yes it's only a rumour, but a very credible one and meanwhile you have the insurance/stop-gap of the adapted Sigma.

The only lens which is unlikely to be replaced (so here we do agree) is the 17-year-old EF-S 17-55/2.8, so if that's important to the OP they would have to use it adapted for the foreseeable future.

If that f/2.8 standard zoom is important in your collection it's still o.k. to replace your 600D, but I wouldn't invest a whole lot of money in Canon crop now. The M50 + adapter is definitely way more affordable, still a huge upgrade from your 600D, while it will give essentially the same IQ as the R10. I think it's a great way to save some time and see where the RF-s lens collection will go and decide later on if you want to go with RF crop cameras or RF full frame. With the saved money it's also easier to replace some lenses with full frame lenses.

You advise against RF crop which is only a few months old and obviously still developing as a range, while recommending sinking money into EF-M which is equally obviously a dead end? Definitely one of the more surprising recommendations I've read recently.