-= Canon EOS R7 owners unite! Post photos and discuss.

Cardinal taking off - not burst mode

Jeff USN Photog 72-76 wrote in post #19412829
....
has anyone figured out a way to set up one of the custom positions C1,C2,C3 to have Burst Shooting ENABLED ? When I set burst to ENABLE it greys out setting the custom positions

I think others have indicated this is not possible; it should be possible to assign a button however.

mcoren wrote in post #19412740
Thanks for that link. I wasn't using eye AF with the planes, obviously, but I haven't noticed any AF "pulsing" in any of my other times when I was using eye AF and Servo AF, but I'll try some tests and see if I can see it.

When exactly did Sigma say that the 150-600 wasn't compatible with R7 eye tracking? He makes that statement 20 seconds into the video, but I can't find such a statement from Sigma anywhere, at least not in the Sigma global, US, Australia, or UK sites. There's a compatibility chart on the Sigma global site that only lists EF bodies, so it doesn't say if any R or M series cameras are compatible or not.

I couldn't find it either - he's demonstrated the problem consistently though, as have several o0ther reviewers. I doubt Sigma will be advertising the fact, but to be fair to Sigma, that lens was developed for DSLRs.

Jeff USN Photog 72-76 wrote in post #19412829
a couple questions

reading Bryan's review of the R7 he says the DLA is f/5.2 but when I look at the digital picture comparison of the 400 5.6L at 5.6 and f/8 the F/8 seems a hair sharper, but based on DLA shouldn't the 5.6 be sharper?


I was also hoping to see a comparison between the EF 100-400LII and the RF 100-500 at 400mm

second question

I like the R7 and keeping the 90D for backup at this time but may sell it. I also have a 5DIV for low light and FF.

the question is I am considering whether to trade the 5DIV for the R6. for low light interiors and as a backup. Has anyone done that?

Third question

has anyone figured out a way to set up one of the custom positions C1,C2,C3 to have Burst Shooting ENABLED ? When I set burst to ENABLE it greys out setting the custom positions

I am contemplating the same issue. I sold my 5D Mark IV and my 6D which was my go to low light camera. Now I am contemplating buying an R6 but I’m also interested in the R7 since I shoot a lot of wildlife. I may end up having to get both!

I did a quick test of what happens when the buffer fills a couple of days ago with a really, really slow card at 30fps, and it was disturbing what the camera was doing; when the buffer filled, shooting seemed to stop completely, and I saw the red light flickering as the buffer was being written to the card, but the rate at which new images were possible was weird - it took a long time for any new shot to be possible at all, maybe around a minute, but the "shots left" number, once it finally did start increasing, increased by about one image every 4 seconds, pretty much reflecting the speed of the card. So, it seems that the camera is actually putting highest priority on clearing a certain large amount of buffer RAM before allowing shooting to happen again. I didn't play with variables like actual image size vs camera-expected size, but that very, very long pause seemed unnecessary to me. It seems to me that a camera should be able to shoot at the card speed or close to it (because of memory management overhead) once the buffer fills, especially if the camera allows the images to be written out-of-order to the card, but the camera seems to have another priority.

Lester Wareham wrote in post #19412868
I think others have indicated this is not possible; it should be possible to assign a button however.

I have the ISO button assigned to the raw burst but it is always disable, have to click the ISO then hit the SET button then turn the wheel to enable it and then you are good to go, 3 button presses

edmidlifecrisis wrote in post #19412916
I am contemplating the same issue. I sold my 5D Mark IV and my 6D which was my go to low light camera. Now I am contemplating buying an R6 but I’m also interested in the R7 since I shoot a lot of wildlife. I may end up having to get both!

That is what I am contemplating...

Jeff USN Photog 72-76 wrote in post #19412829
reading Bryan's review of the R7 he says the DLA is f/5.2 but when I look at the digital picture comparison of the 400 5.6L at 5.6 and f/8 the F/8 seems a hair sharper, but based on DLA shouldn't the 5.6 be sharper?

By my simplistic understanding, there are two competing effects on sharpness as the aperture gets smaller (larger f/number):

1. Smaller aperture = greater DOF. Also, less of the lens elements further away from the optical axis are being used. By themselves, these would cause the image to get sharper.

2. Smaller aperture = more diffraction. Diffraction increases the size of the smallest in-focus "point" on the sensor (known as the Airy circle). This causes the image to become less sharp. The DLA is the aperture where the Airy circle is exactly the same size as a pixel, which is why smaller pixel sensors have lower DLA f/numbers. It's a function of pixel size, not sensor size.

The optimum sharpness for a given lens with a given sensor is therefore the "happy medium" between these two competing effects.

edmidlifecrisis wrote in post #19412916
I am contemplating the same issue. I sold my 5D Mark IV and my 6D which was my go to low light camera. Now I am contemplating buying an R6 but I’m also interested in the R7 since I shoot a lot of wildlife. I may end up having to get both!

or and R5,...

mcoren wrote in post #19412956
The DLA is the aperture where the Airy circle is exactly the same size as a pixel, which is why smaller pixel sensors have lower DLA f/numbers.

Mathematically simple and consistent, but does that make it practically meaningful?

As important as 1:1 or "unity" might seem, it can easily be arbitrary, in practice. The f-number really has to be several times the pixel spacing in microns before you reach the point where not much else could be resolved, with a Bayer CFA. The tail of tradeoff is long, and ends, practically, far away from unity. As I've said before, I've seen aliasing, especially blue channel aliasing, at f/8 with 1.4 micron pixels, which should have a "DLA" of about f/2.2.

John Sheehy wrote in post #19412975
Mathematically simple and consistent, but does that make it practically meaningful?

As important as 1:1 or "unity" might seem, it can easily be arbitrary, in practice. The f-number really has to be several times the pixel spacing in microns before you reach the point where not much else could be resolved, with a Bayer CFA. The tail of tradeoff is long, and ends, practically, far away from unity. As I've said before, I've seen aliasing, especially blue channel aliasing, at f/8 with 1.4 micron pixels, which should have a "DLA" of about f/2.2.

Absolutely, and you know much more about it than I do, judging from your many informative posts on the subject.

Like DOF, the effects of diffraction depend on many factors such as the image size, viewing distance, and visual acuity of the observer.

Perhaps what I should have said is that when an online review states that the DLA of a particular camera is X, they're referring to where the Airy circle = pixel size. In reality, as you yourself have pointed out many times, you can get perfectly acceptable images well beyond this.

CyberDyneSystems wrote in post #19412967
or and R5,...

Living on Social Security the R5 is a tough nut to crack.

I hardly use my (used) 5DIV and don't think I would use the R5 much more. I mainly do birds...

a lot can be cropped, Jupiter and the three moons without a tripod with a handheld lens without an IS

I ordered a body only from B&H four days after the announcement and it is still backordered. Meanwhile The Canon Store on Amazon has the kits in stock. I just ordered the kit from Amazon and it should be in my hands next week. Looking forward to joining the club.

Jeff USN Photog 72-76 wrote in post #19413002
Living on Social Security the R5 is a tough nut to crack.

I hardly use my (used) 5DIV and don't think I would use the R5 much more. I mainly do birds...

Been three weeks since I got the R7 and I have not touched my R5 since getting it.

C Scott IV wrote in post #19413046
I ordered a body only from B&H four days after the announcement and it is still backordered. Meanwhile The Canon Store on Amazon has the kits in stock. I just ordered the kit from Amazon and it should be in my hands next week. Looking forward to joining the club.

I preordered on launch day at B&H which I since cancelled. I ended up getting the kit form Milford Photo in CT. Have not even tried the kit lens yet. Not even sure I ever will to be honest. But loving the R7 more and more. You won't regret it...ENJOY!!