A Canon RF 300-600mm f/4-5.6L IS USM on the Horizon

Since I just broke down and bought a 200-800, the 300-600 L is imminent.
Sure as if you wash your car, it will rain - if I buy a long tele, a newer, better long tele will be released.
Thanks for the heads-up;). Enjoy your new lens. You can buy 2 or 3 200-800mm lenses for the rumored price of the 300-600mm.
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Canon Officially Announces the Canon EOS R6 Mark III

Yes Canon confirmed on their Instagram story that RAW capture with electronic shutter is 12 bit.
I understand that the electronic shutter is 12 bit.
That's a bit dissapointing.
I guess this is the slow drip feed of tech / features for the future Mk IV / Mk V.
It does make me wonder what the R7ii will have feature wise.
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Why I’m Buying The R5C Instead Of The C50 (Or R6 Mark III)

We all have different needs, R5C is a great cam but I personally see very little reason to lean towards it at this particular point in time.

R6 mk3 has IBIS, Clog2, open gate etc. It doesn't have a fan I'll give you that, but tests have shown it won't overheat in the most common 30p modes. If you shoot long form 60p content then maybe there is an argument there.

The cine OS in R5C/C50 is definitely nice, especially for shutter angle as you mention but R6 mk3 has custom modes so just set your high frame rate and shutter speed combos in there or use the new S&F function that conforms to slomo directly (much better imo).

I wouldn't underestimate open gate either, if you have never shot it you don't realise what you're missing. Being able to reframe for social in 2025 is a must and personally I love having the full sensor capture for framing and pulling still grabs.

Clog2 is also a much better log profile than Clog3, less contrasty, more filmic and outputs better DR.

Finally low light will be better on the newer lower MP R6mk3 sensor.
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Why I’m Buying The R5C Instead Of The C50 (Or R6 Mark III)

"Canons just work. You can pick it up and shoot with it out of the box."

That's it, that's why I came to Canon when I went digital and still am overall happy with gear from this brand. It simply works, that's for me more important than having a king of lab based reviews in my hand, but with quirky ergonomics.
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Canon Officially Announces the Canon RF 45mm f/1.2 STM

Actually, the 50 VCM is the best optically corrected VCM lens of them all. It vignettes and distorts less than the RF 50mm f/1.2. It's a terrific lens.
I recommend Bryan Carnathan's in-depth review:


The only downside of this lens is that it is prone to strong color blur in out-of-focus areas. Personally, I don't mind that because I am used to such issues caused by undercorrected fast lenses. I either don't use such lenses in settings with a lot of contrast in the background when I don't want to see such effects in the image or I accept them as part of the composition.
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Canon Officially Announces the Canon RF 45mm f/1.2 STM

I'm interested in knowing if that still true for R5 MK2 like camera. Because all the videos I saw about configuring the camera said to use Servo AF.
In fact, I never used one shot AF on my R5 II so far, it doesn't make sense for most settings. (But I used recently full mechanical focusing, because I adapted fast vintage glass to that camera, and I loved to use its EVF with the magnifier option, works quite well.)
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A Look at the RF 45mm f/1.2 STM, it seems compact.

But do not buy any Leica lenses below 35 mm, unless tested. You will normally experience an ugly colour cast on both side of the pictures, and a huge loss of sharpness too. Even some older 35mm summicrons disappoint (around 1968). So, testing is highly recommended.
I'd also warmly recommend the Novoflex adapter.
PS: Some early 50mm summicrons also used thorium in their lens-glass formula...
Luckily, I prefer normal to short tele focal lengths for settings in which I use these old lenses. That said, I got also a 2/35mm LTM lens introduced by Canon in 1963 (https://global.canon/en/c-museum/product/s41.html). This M39 lens has already a very modern character, with decent sharpness in the edges even wide open - and it is beautifully small and light. Of course, a copy in good condition isn't a bargain, if you are very lucky today you get one for about 400 US-$, preferably from Japan.
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A Look at the RF 45mm f/1.2 STM, it seems compact.

The

My experience with vintage thorium lenses that have yellowed is not a good one. I have found both a loss in light transmission and resolution as well as a colour cast.
I think it depends on the grade of yellowing, of course it it is too strong it will interfere too much with the image quality. My lenses are still in a condition in which they can deliver beautiful images.
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A Look at the RF 45mm f/1.2 STM, it seems compact.

I have the KF M39 to RF adapter and I can confirm the Jupiter 50mm f/2 works great on a R6 ! Very small lens. It would give even the Devil himself a halo at f/2.
The reason why I purchased 2 Canon 7 bodies (one because a lens that interested my was part of the offering) when I returned to film photography parallel to digital photography was that I wanted to delve into the Leica M39 world with the most modern rangefinders ever made for that first 35mm standard mount. But I never made it to Soviet Jupiter lenses, this might be fun, too. I stuck with Canon glass from the late 1950s and 1960s because the best ones of these fast primes combine already quite modern sharpness in the center and good micro contrast with still a very nice vintage character. Canon's 18/85 mm in particular is a real gem and hunted by collectors (I am no collector, I want to use that vintage gear). I needed several years to get a good copy - good means to me: signs of wear are welcome but the optics and mechanics need to be in very good condition.
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Why I’m Buying The R5C Instead Of The C50 (Or R6 Mark III)

Why stop at 7K for the C50 instead of 8K? Is the industry really shifting towards online content that much?
16:9 @ 8k requires just shy of 40mp on a 3:2 sensor. That would be a very small pixel size for an FSI sensor, perhaps too small to be a good idea. (The more pixels, the smaller the pixels. The smaller the pixels the more of the pixel that gets blocked by the electronics that sit in front of the photodiode on an FSI sensor.) To address this Canon would have had to go with an all-new BSI sensor, and for whatever reason they don't seem to want to put BSI sensors into the R6 segment.

An R6 III with a fast 8k-capable 40mp BSI sensor would be something similar to the Panasonic S1R II, but at a lower price point. That would be very, very close to what the R5 II offers. Not exactly the same - no stacked sensor - but close enough that Canon would probably not be comfortable with it.
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Canon Officially Announces the Canon EOS R6 Mark III

I'll certainly do that, i had planned the next one to break down all three R6's -

This article was really looking at it from the upgrade perspective, and also, the 5D and R6 Mark III are the same size, weight, and right now, the same price.

I'm still getting used to doing these longer articles more often and doing more product comparisons and such, so it's all a learning experience.
r5 comparison was right. same money for either camera. I have an R5 so it wins! I dont have to buy an r63 even though i like the specs.
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