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AF issues with 5Dmk4

Ah yeah, the tamron seems to be the worst offender, but the others are still problematic also.

I took the camera out for a day with my 70-200 and was quite disappointed with how few were in focus, far less than I get with my 6d in the same situation. I know that hasn't been afma'd on the 5dmk4 but it meant no keepers that I was happy with for the whole day. I want to say there would be a fair amount of user error in that with a somewhat unfamiliar camera but I was really struggling with the focus the whole time
For someone who knows photography like you, the camera should be behaving very well. Put it on a tripod, defocus the lens, and take a few tries doing that at different distances. It should be right on virtually all the time. If not, return it or ask for service, don't delay, the sooner you tell them of the issue, the better. If you wait, and they find damage, they may claim you damaged it. It could have been damaged in shipping, that happens more frequently than some believe. Roger Cicla has commented on that with customers receiving cameras with damage in shipping.
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EOS R: GPS

The pairing of my iPhone with my G7X II, as with the S120 before it, as I recall, works quite well for GPS stamping. But in situations where I am concerned about battery life all day in both devices, I don't use it. When at a location that I'll want to pinpoint later, I take a picture with my iPhone in the midst of shooting there. Then I can look at the time stamps from pictures from both the camera and the phone and get the location from that, if I need to.

I leave GPS on the 6D2 turned on, but in the mode where it is off when I manually switch the camera off. If I've been much of anywhere away from home with the camera, I'll transfer the GPS log to the card and thence to the computer, where a program will map my travels for that day. Otherwise, I mostly have GPS turned on to keep the clock set accurately.
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How are you setting up your EOS R

I have an issue with the ISO settings with my EOS R.

When using a flash in auto ISO, I am used to the camera setting the ISO to 400, and adjust the exposure with ETTL in the flash. The EOS R doesn’t. When I used it this morning, the camera chose ISO 1600 even though the flash was on. No big deal? I set the ISO to 100 using the control ring. Problem solved? No! The EOS R jumped back to Auto ISO after taking one shot (or after approximately 15 seconds).

This really bugs me. I wonder if I have to use one of the custom settings for flash use, and disable auto ISO, and set the selectable ISO range from 100-400.

Has anyone experienced this, and found another solution?
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Advantages of mirrorless?

The sharp focus every time is worth a lot. AFMA is nice, but it only gets sharp focus at one diastance, focus is usually off near MFD, but not with mirrorless. If you use typically troublesome third party lenses, they focus a lot better.

You get a 5D MK IV senor and Canon's great colors. It sits a bit higher than the 6D MK II at about the same initial price.

AF in low light is better due to DPAF

AF at f/11, you can use a t/5.6 telephoto with 2X TC and have autofocus

I have not used silent shooting enough to find the limitations, but Canon says don't use high shutter speeds stopped down

Reliability will be high, mechanical components used in the complex mirror, and AF are unreliable, the camera uses typical high reliability electronic components, its a lot simpler.

Early adopters will be the ones to find bug in firmware.

The main disadvantage I find is the small size does not fit my hand, and the camera does occasionally have some lag on the lcd touch functions, but nothing that bothered me.
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What would it take for you to buy a ML body?

I have already adopted MILC for my compact camera needs (Canon M). I think it fits well in that niche as a “bridge” between my iPhone camera and my FF 5D body.

I don’t shoot just one particular subject matter - I dabble in just about everything so I need a good all-rounder type of camera. I think the 5D series fits this need fairly well, all things considered. High-level FF image quality. Fast enough for the occasional sport shoot, good enough in low-light for dim events, quick and responsive to use and always ready to shoot. Dependable, with enough ruggedness to tolerate a few bumps or raindrops.

Is the current R there yet? I don’t think so...maybe a couple more generations are necessary first. Can it fill some of the niches I described above? I think it can, but then the question becomes a matter of is it worth it. Ultimately it may end up being the RF lens pool rather than the R bodies themselves being the driving factor on how quickly I adopt the R system, but at this point it could not be my main camera.
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To IBIS or Not To IBIS

A few of your facts seem to run counter to my own experience. Perhaps you could provide some references to help me understand? My confusion is noted below.
Some facts ??? about IBIS: (proven empirically in several experiments and reported on forums and U-Tube)
(1) For long focal length lenses over about 300mm FF, IBIS is useless less effective and lens IS is more effective. Hence some manufacturers (Olympus, Panasonic) use both.
(2) For low light shooting IBIS is useless and lens IS is more effective. Not in my experience. Of course if low light = long exposures then neither system can compensate for subject movement.
(3) For camera on tripod IBIS is useless and even may cause trouble. In cameras such as GH5, IBIS shuts itself down when natural movement goes below certain threshold level and when panning it wakes up with a sudden movement causing jagged or sway effects. Actually, tripod use was originally a significant problem for in-lens systems, hence the ability to manually switch it off was included on the lens. Some newer systems detect the situation and automatically compensate; however many systems - in-lens or IBIS - still recommend turning stabilization off when using a tripod.
(4) For wide lenses, hand shake (exposure time of about 1/focal length) is more tolerable therefore, IBIS is not really needed. To a point... IBIS users routinely report taking sharp hand-held shots in the 1 - 5 second range. Great examples have been shown at significantly longer shutter times but technique must be impeccable. It's actually become a bit of a competition between IBIS body users to see who can take sharp shots with the longest shutter times. Many PJ shooters with IBIS have reported they no longer carry a tripod on assignment

Conclusion: IBIS is only can be highly efficient when "handheld shooting" with "lenses less than ~ 300mm of short focal length (FF eq.) distance" and in "good light".
.
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Canon 5Dmk4 corrupted files problem

I'm glad it worked out for you.
Nothing more frustrating than a new camera not working straight out of the box.
Especially as a wedding photographer you need to be sure its going to work.
Glad the new one is working.
It's a great camera (of course Canon could have it made it better - but that would make this forum very boring).
You'll love it.
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The EF-M 32mm f 1.4 stm first impressions

I took a couple of handheld shots comparing the EOS R+ 50L at f2, with the M5+ 32mm f1.4 at f1.4. Sharpness wise (in the center) they are very close, but the 32mm might be the sharper one. It is hard to tell.

The 50L (at f2) has much smoother bokeh, and better depth rendering. For overall image quality, the 32 mm f1.4 can not replace my 50L (which focuses like a dream on my EOS R).

That said, I’m still very impressed with the 32 f1.4, and I can hole heartedly recommend it to EOS M users. It is a no brainer if you have the money for it.
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TDP: Just Posted: Canon EOS R Review

The 6D Mark II was the same way. A bunch of forum dwellers who had never actually seen one, much less shot with one, trashed it based on DxO Mark's scores. On the other hand, those who use it love it.
Exactly, and I think that’s why people use Canon products, all the trash talk is just that, it doesn’t describe the products in any way shape or form. They are incredible tools. I’ll just let the spec-trolls spend their time arguing while I’m out TRULY enjoying my new camera. I wasn’t expecting to be this happy with a cheaper camera, but I compare it directly to the 1dx2, button for button, function for function, and I don’t miss the 1d at all... and I used them exclusively for a decade, that says something about the R, I think...
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The Canon EOS R will begin shipping to customers on October 9, 2018, if not sooner

I had an EOS-R in my hands for the first time today - October 24th in Denmark. It looks and feels like a solid camera. I did not have the time to really play with it - especially the touch bar I think you need to get used to.
But the size reminds me of my Canon AE1-P with FD mount. But the grip i much better.

Being the happy owner of a 6D, my original plan was to move for a 6DmkIII or a 5DmkIV (or V) sometime in the future. And before that my next lens should be and EF 24-70 f/2.8 mkII.
Now I don't really know.
I quess I will still go for a EF 24-70 f/2.8 mkII, but maybe a not-to-much used second hand.
And the next body: 3 to 5 years from now will probably be and R-series. Not because I especially want a mirrorless, but my guess is, that the EOS DSLR line will fade out over the next 5 to 10 years.
Time will show - but the R-series looks as i should - like a Canon !
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