5dmkii to a mirrorless Canon

Patchy wrote:

I personally dont see the RP as an upgrade apart from the weight.

I agree with that statement. Though I'm not all that familiar with the RP strengths. Probably not much reason to make that upgrade. Might be better to save and go bigger later if you can.

5D II was my primary camera from November, 2008 until January this year. I bought the R5. The R5 AF features are what initially stood out the most to me. The difference is significant if you need to chase moving subjects, especially subjects with eyeballs. Speed, overall usability/screen, custom buttons programming, dynamic range and resolution are also noticeably improved. You really notice it after the first real shoot with the R5 and I assume similarly the R6.

I had no interest in R5's famed video features. But... the CLOG 4K alone is so amazing that I've added a PolarPro VND filter to my kit to stay above ISO 400 with slower shutter speeds while recording video. I'm recording quick take video quite often now and it is impressive to be able to produce such high quality content.

All my EF lenses were purchased prior to 2010. Every time I thought about upgrading lenses to MK II or MK III it seemed rumors of a move to the RF mount would only be a couple years away, so I never did replace the old glass up until I got the R5. Depending on your EF glass versions, you'll probably want to upgrade it eventually to take full advantage of the new cameras. So factor that path into your budget and decision if you have ancient glass like I did.

I quickly noticed my EF 300mm 2.8 MK-I didn't look super sharp with R5 compared to the much slower and smaller RF 100-500. Pretty much all my old glass was MK I versions with less efficient AF. AF still worked pretty well on the R5 with EF control ring adapter though. EF 70-200 mm MK I pixel peeping at 45 mp also didn't look as great but images were probably fine for many uses. I'm keeping my EF 135mm F2 though since it still looks pretty on the R5 no matter what I shoot!

Though a bit slow at F4.0, the RF 24-105mm images usually look outstanding to me. A big step up over my first EF 24-105mm kit lens with the 5D MK I in 2005. Canon has done a really good job with the RF lenses. This is another good reason to upgrade unless you already have some of the more recent MK II or MK III EF L lenses.