Canon EOS R7

Approx. 1.1 lbs (18.70 oz) Body Only
Approx. 1.3 lbs (21.59 oz) With battery,and memory card

Released: 23 June 2022
It is an advanced APS-C mirrorless interchangeable-lens camera.
Alongside the Canon EOS R10, the R7 is the first of two APS-C cameras in Canon's EOS R lineup. Two RF-S mount lenses were offered as kit lenses with the R7: the RF-S 18-150mm f/3.6-6.3 IS STM and the RF-S 18-45 f/4.5-6.3 IS STM.  wiki
You can put full-frame RF lenses onto the R7, and they work beautifully, (we used the RF 28-70mm f/2 L USM) but you'll have to account for the 1.6x crop factor which could be tricky for anyone wanting to shoot astrophotography as there likely won't be any focal lengths that are wide enough after the crop.
Marketing statement: The EOS R7 resists (not proof) dust, dirt and water (moisture not heavy rain!) thanks to its robust magnesium alloy construction and dozens of protective rubber seals.
  Comment: "I have seen claims that the R7 is weather sealed, but if it is it's minimal.  As Rick has said, and I agree, the body is only half the issue.  The lenses have to be sealed as well to complete the effect, especially as the sensor does not have an automatic shielding of the sensor when not exposing for an image.   Lenses that extend a lot have a bellows effect, sucking in dust and moisture that can find its way into the lens and onto the sensor.  I don't rely on it."

THE BEST CAMERAS WITH ANIMAL DETECTION AT EVERY BUDGET (02/05/2023)


PROS


CONS

WHAT WE THINK

Objectively speaking, this is the best APS-C mirrorless camera on the market; but it still has problems. That’s more of a comment on the photo industry as a whole though more than what Canon delivered at an insanely good price point.

Review:
<1>
IS (mostly) does not work with EF and EF-S adapted lenses

The three stars here are not deserved. Nevertheless, I have had such a long positive association with Canon products (48 years), I am loathe to leave a lonely star for their new APS-C flagship EOS R7 camera. After sending a second copy of this camera back to B&H, here are my thoughts: First, the positives... The auto-leveling image sensor is stupendously useful -- seamlessly smooth, accurate, no over-adjustment, with plenty of compensation. Every IBIS camera should have this as a standard feature. It's a real-world game changer. And before I go any further -- B&H has been magnificently helpful, thoroughly responsive, and I highly recommend this store. Next, the so-so aspects of the R7... Including a 32 MP sensor in an APS-C camera is overkill. The pixels are so small that few (if any) lenses offer enough image quality to take the slightest noticeable advantage of this camera's tiny pixel array. At the same time, the smaller pixel dimensions lower the fundamental quantum efficiency of each square making the imagining sensor less sensitive. The camera's noise-reduction system hides the excessively noisy pixels -- but it cannot disguise mushy interpolated images at ISOs of 3,200 and even 1,600. Hiding noise is not the same thing as recording image data. Now, for the showstopper... Using two different Canon EF/RF lens adapters on two copies of the R7, image stabilization (IS) varies from tolerable to atrocious with all of my Canon EF and EF-S lenses -- in some cases worse than no IS at all. Strangely, IS works okay from ~1/4-1/25th sec. After that -- at speeds increasing up to ~1/200th, micro-jitter progresses to absolutely horrendous image instability. Faster than this, shear exposure speed hides the problem. I tried adapting a vintage 24mm FD ...set the camera to 24mm and turned on IBIS -- and once again saw terrible IS performance. As it turns out, the only lens the R7 universally tolerates in my kit is a 150-600mm Sigma Contemporary -- a non-Canon lens the R7 IBIS appears to fully ignore while letting the lens do all the IS heavy lifting. I sent the first camera back for a swap and the second camera had the exact same problems ...and in case you might be wondering if it is my lens kit, all of these lenses operate with absolutely no IS problems on a Canon EOS R6ii. After searching online for similar tales of woe, it seems I am not alone, and it appears that Canon never tried very hard to make the R7 work with any lens other than their RF system. If the R7 is potentially incompatible with every lens other than Canon's RF series -- at the very least, they should put that in writing. If you are reading this review in the months and years ahead, perhaps you can find evidence that Canon has fixed this problem. Apart from this, even is you only plan to shoot with RF lenses, the incompatibility with most Canon lenses should have you thinking twice.

Canon EOS R8
Cons:
1. Not only does the R8 leave you missing having the safety of dual card slots, but also, the lack of IBIS is notable, plus the tiny little battery is not able to last more than a few hours when you’re working non-stop.  src
2. The feature that protects the camera from overheating, a forced “cool-down” period, kicked in for a few minutes during a hot day. I wasn’t even recording video, just photos, and yet the camera was not happy about me also trying to charge the battery with a USB-PD power bank.  src
3. For action sports and wildlife, the R8’s listed burst shooting speed of 30 only lasts for, literally, approximately one second. After that, the buffer is quite slow, and sustained FPS are clocked at a meager 6.  src

Canon RF 100-500mm f/4.5-7.1 - Price:  $2,075.00  abesofmaine.com  
Canon EOS R8 - $1,125.00  abesofmaine.com

Canon EOS R7 - $1,399  B&H
                         -  $1,309 or $1,299  https://www.keh.com/shop/27930561.html
Canon RF 600mm F11 IS STM - Approx. 2.05 lbs. / 930g
Note:
The Canon RF mount retains the same wide 54mm diameter as the EF mount, but with a big reduction in the back focus distance – the distance between the mount and the sensor – from 44mm in the EF mount to 20mm in the RF mount.
So EF lens can fit into R7 without any adapter & of course only manual focus, no image stabilization.  This is my guess.
Canon RF-mount lenses
Focal length
(mm)		 Aperture range Design. IS L AF
Actuator		 Filter
size		 Lens
diameter		 Lens
length		 Weight Type Hood Introduced Source
100–500 f/4.5–7.1 L IS USM Yes Yes USM 77 mm 93.8 mm (3.69 in) 207.6 mm (8.17 in) 1,365 g (48.1 oz) Zoom ET-83F (WIII) 2020-07-09 [45]
I have a Canon 72mm close-up lens 500D. On 67-72 step-up ring, I can use on Tamron 100-400mm f/4.5-6.3 Di VC USD Lens for Nikon F.  And I can use Raynox on Tamron too.
I have:
   step-up ring:  49-52-55-58-62-67-72-77
   step-down ring: 67-58, Raynox (52-67 to 43)
I have to buy a step-down ring 77-72 so I can use 500D on my Canon 100-500mm lens.  Not the 72-77 step-up ring.
4/12/2024: Sensei 77-72mm Step-Down Ring - B&H

500D Review
The 500D is intended to be used on lenses with a focal length of 70mm-300mm.