Canon EOS R6 Mark III & RF 45 F1.2 STM November 6

Even if it's the same optically, the AF might be much more reliable.
On Canon RF bodies the AF reliability of the EF 50mm 1.2 L (and all Canon EF lenses) is much much better than it was on Canon DSLR bodies. Even the RF 50mm 1.2 L lens is hardly any better at autofocus. So why to spent money on a RF 45mm 1.2 STM lens with similar optical performance but weaker built quality. Ok, some less weight.
I would replace my EF 50mm 1.2 L with a RF 50mm 1.4 L VCM, in the future.
 
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why to spent money on a RF 45mm 1.2 STM lens with similar optical performance but weaker built quality
Ditching the adapter, IMHO of course, is worth enough for spending the money; also, I don't know the used price of the EF 1.2 L but I guess is on pair or more expensive then the new RF 45 1.2 so there's also some possible saving. If the thing is good enough, I'll gladly ditch my 40 Art and hopefully get 50/100€ extra in return (but same price swap would be ok, too), without the hassle of the adapter.

Then, build quality in 2025 is good enough even on cheapo chinese lenses, let alone a first party f1.2 lens, which is also going to be serviced for the next decade or two, while if the EF L is not going to be serviced for that long (if even still serviced today), and could end up becoming a fancy paperweight.

That's why I immediately swapped the EF 24-70 L II with the RF 28-70 STM as soon as I saw that quality was same or better; new lens, two years guarantee, no service problems for at least a decade, no adapter, shorter, lighter, stabilised. The new RF 45 would likely be the same, if quality is what we all hope and expect.
 
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along with my older 60d & 80d have for the past 2 years an R7..dual SD Cards.. as an addition looking at R6MkII with dual SD Cards.. the R6MkIII has dual card slots BUT with CF card as one ..DON'T use CF cards.. so looks like R6MkII will win out as is same on my R7
 
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Correction (I read the communication incorrectly). Optical quality on par with the EF 50 f/1.2L USM.
Wow!
So maybe I could buy this cheap 45mm and buy the 85mm 1.4 VCM using the money I thought I would use for the RF 50mm 1.2...

But I need to check the optical quality first: I never liked the cheap RF 50mm STM and I'm currently happy with an adapted Sigma 50mm 1.4 Art.
 
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Wow!
So maybe I could buy this cheap 45mm and buy the 85mm 1.4 VCM using the money I thought I would use for the RF 50mm 1.2...

But I need to check the optical quality first: I never liked the cheap RF 50mm STM and I'm currently happy with an adapted Sigma 50mm 1.4 Art.
The Sigma 50mm f/1.4 Art has always been better than the EF 50mm f/1.2, the only parameter where the 1.2 lens took the lead was pretty much bokeh.

On Canon RF bodies the AF reliability of the EF 50mm 1.2 L (and all Canon EF lenses) is much much better than it was on Canon DSLR bodies. Even the RF 50mm 1.2 L lens is hardly any better at autofocus. So why to spent money on a RF 45mm 1.2 STM lens with similar optical performance but weaker built quality. Ok, some less weight.
I would replace my EF 50mm 1.2 L with a RF 50mm 1.4 L VCM, in the future.
My guess is this 45mm will be slightly sharper wide open, at least in the center of the frame - not by a lot, but slightly - mirrorless designs have been giving us that. But it's understandable, yours is a high end lens, this is not.
 
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not gonna sell my 2 bodies to get better EVF or a bit more resolution. to put it into perspective resolution gonna be like 6900*4600 instead of 6000*4000.

however 14 bit e-shutter, better readout speeds, better DR & noise, is way more tempting.

I also would have loved it if they kept the 24mp and focused on improving readout speed, 14bit ES and maybe dropping the mechanical shutter.
 
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A review of the original EF 50mm f/1.2 USM L lens:

https://photozone.de/canon_eos_ff/472-canon_50_12_5d?start=2
It still amazes me how some people keep buying the lens, even today, instead of the Sigma 50mm f/1.4 Art.


 
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It still amazes me how some people keep buying the lens, even today, instead of the Sigma 50mm f/1.4 Art.
People like to brag L lenses, even when the lens sucks...it's just "I have a thicker wallet then yours"; you can afford it, and you want people to know you can. Some thinks buying third party lenses makes them "poor", but it's ok, as they swap lenses very easily at any new release, so in a short time they flood the used market with many pro lenses at bargain prices for people really needing them to buy. I actually appreciate that :-)
 
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