R6 VS R3 Which camera is better?

Ephemeris wrote:

We regularly extract images from video. Shutter speed needs to be selected (or t least benefits) with that in mind.
This enables image selection from 120fps which isn't otherwise possible but we nornally are extracting from 8k ( primary reason to purchase).
So I think it links to what you have said about it's really down to the shooter to understand what they need and also what they may like (which may not be a need).

I'd love to see what you are getting by extracting frames from video.

I tried shooting fast moving subjects using the technique you describe and got poor IQ and motion blur with low resolution. If you've got it working,

Ephemeris wrote:

Hoka Hey wrote:

Ephemeris wrote:

I haven't read the compatibility list of EF lenses with the R3 but for the R5 (and 6) a good number are 20fps compatible. Maybe have a read what Canon say is able to give the full compliance.

FWIW, with fast action, the R6 is limited to 12 FPS because you have to use the MS due to significant rolling shutter on the R6. Then, H+ is limited even further on the R6 due to a narrower set of older lenses that support H+. On the other hand, the R3 gets 30 FPS in ES with virtually the same rolling shutter as MS mode and Canon has not listed any lenses that would cause the 30 FPS to be limited.

We are shooting R5s and use ES for some set ups, mainly rotating machinery.

You are using the R5 which has much faster read rates than the R6 and thus much less rolling shutter. However, the R5 still has rolling shutter effect.

The resolution is set by which video mode you are using.

So typically if we are taking images and video of say an updated part to a machine (some recent have been to agricultural machines) then these would be images (usually using ES) and the 8k video used to compliment that. Shutter speeds for the video reduced which doesn't make for a great video but does allow frames to be used.

On occasion we may have a rotating fan or fans which are of reasonable diameter (maybe 32" or so) and the ES can cause some distortion. Here a few MS shots would be taken in case those images are needed later on.

Some 120fps video is taken for some jobs which help to show operation that we may not see if shooting at sub 25fps. Stills have be used from this also. If usable data can be pulled form video then we would.

photographer daniel wrote:

I think 30 FPS is needed when you want to capture 30 FPS. We have to remember, especially in photography that just because technology is new and people got by with less before, should not mean it is not needed. If that was the case than why need a camera? You can just sketch what you saw. My example might be silly but I back up the need argument. Now does that mean the OP needs 30 FPS to shoot gymnastics? Idk thats for him to decide.

In sports, especially pro high level stuff, I imagine you need as many FPS as you can get. The R3 is a pro camera aimed at pro needs. Its only a luxury to well off enthusiest.

30 FPS lets you capture more images.
But after that from a set of 50 pictures you make, you choose only one picture.
So you just have to know how to read the subject and know when to take a picture

That's correct. You have to know when to shoot. But there is more to it than that.

When shooting fast-moving subjects each of the frames will be a little or a lot different even at 30 FPS and there is usually one that is best. The more options you have, the more likely you are to get a great image.

R2D2 wrote:

Hoka Hey wrote:

davev8 wrote:

i say the R6 is "more likely" to have more FPS etc as we do not know what EF lenses the OP has and its a bit early for many real world tests with the R3 and EF vs RF glass but the general consensus with the R5/6 is they are better with RF glass than EF glass but EF glass works better on the R5/6 than on a DSLR..

All true and the EF glass I have worked even better on the R3. I will be surprised if there is any EF glass that works better on the R5/6. Based on the MS H+ speeds being limited on the R5/6 with some EF glass, but not on the R3, it appears that Canon has made an effort to make the R3 even more compatible with older lenses.

Just tested the EF 70-200 f/2.8 ii with 2x iii converter on the R3. It is really snappy when going from close to far focus and does Eye Af with ease. As stated previously, the EF 500 f/4 ii has quicker AF and the glass moves faster on the R3.

i think you are going to find some EF lenses that are hardware limited and no matter what body you have are not going to make them AF any faster..and any difference between body to body are probably not noticed in real life

There is a significant difference IRL in AF lock-and tracking between the cameras with the lenses mentioned above.

i would have to put my 5Dmki from 2005 side by side with the R6 to see if my EF85mmF1,8 af is any faster..it seemed instant on the 5D

you have to remember the OP is coming from a 6Dmkii with 5 fps and only the center AF point rated only to -3.5EV compared to -6 to 7 EV for ALL points for the R3/6 (this is not twice as good but 3 times better) only 45AF points clumped in the middle vs 4000+ over most of the frame, eye AF and tracking that will seam on another planet

so the R6 is a massive upgrade its huge over the 6Dii

so is the R3 but to realize any extra advantage of the R3 will be in extreme cases

The advantage will be significant in competitions which is what the OP says that he is getting the camera to shoot. Not only is the AF faster and stickier, but you get 30 FPS vs 12 FPS. So, you get more in-between shots.

the % of extra upgrades is slim for double the money for the OP use

It depends on how important getting THE shot is to OP. The R5 and R6 are fantastic cameras, bu the R3 is significantly better for fast action.

BUT the advantage still goes to the R6 with affording RF glass

RF Glass is better, but OP has EF glass that he can use now and convert to RF glass as his needs evole.

1 you always have AF over the full-frame with RF glass not always the case with EF glass

No. The RF 600 and 800 f11s do not allow full-frame coverage. What EF lenses are you saying offer less than full-frame AF points? I have full-frame AF points on all my EF glass.

2 its reported that IS/IBIS works better with RF glass

It does, but it is incremental.

3 RF glass is often sharper than the equiv EF glass

It depends on the lens.

4 often other advantages with RF glass like the aforementioned 70-200 its the most compact 70-200F2.8 available

Bu the EF 70-200 2.8 ii is close in IQ and that's a lot to spend for a smaller lens.

5 no adaptor to mess with and /increase size

Not a big deal.

6 i have already seen EF lenses drop in second-hand value (in UK) now would be a good time to change them..i imagine the decline will be faster when RF availability is back to normal

To the OP, you need to listen to what Hoka Hey is saying. Virtually all of the information you need in order to make a decision is found in his posts.

Pay especially close attention to what is said about the extra stop of usable ISO, because that of course translates into being able to double your shutter speed!

Pay especially close attention to what is said about improved autofocus (not just acquisition and stickiness, but also speed), because that too will greatly affect your keeper rate.

Pay especially close attention to what is said about rolling shutter effects, because you will want to use eShutter for all you shoot once you start using it.

You are looking for professional-level results, shooting some of the most demanding subjects in some of the most difficult conditions possible (I know because it’s stuff that I like to shoot too).

For these subjects, would I trade my R5 for the increased capabilities of an R3? In a heartbeat (if one were available to me).

But one isn’t, so I did the next best thing and dropped my $7500 US on some new RF lenses. I’ll maybe have to wait it out for the R1 now (or just say the heck with it and order an R3 anyway). Because I know without hesitation what those increased capabilities will do for me!

Best of luck with your decision!

R2

Thanks R2.

That's an excellent summary of Important things for OP to consider.