Gretag Mcbeth profile system is very good.
The problem in Africa will be dust. The bigger pro cameras are dust sealed. He needs to use care when changing lenses so as to not get dust on the sensor. he should know how to clean the sensor and take a cleaning kit with him.
What scanning software are you using? You may need to open the big TIFF file in Photoshop and cut the images into smaller ones.
Does the 80D use two capture cards? If so, try re-formatting the SD card (for the jpegs) in the camera. Is the green stripe always at the bottom. It appears it is not capturing or writing the entire image. You might have a camera problem with the capture firmware. Check and see if you have the latest firmware for the camera (Canon's website). I think I would re-load the firmware anyway. It might be corrupted. If it continues, call Canon.
If you plan to do it yourself, yes you will probably need two machines, a lot of computer space and a lot of time, but you get all of the control. To get it done quickly consider having them scanned by one of the scanning services, then proof them and re-scan the best ones.
Jpeg is a fixed, lossy format. Tiff is much better as it does not lose density. RAW is as the camera captured and it is "developed" by the camera software shen it is downloaded. RAW is like a film negative in that it's exposure can be altered plus two stops or minus two stops when it is developed. Thus fixing a world of problems. It also preserves the density of the file off the sensor.
Try a Bogen Carbon Fiber Tripod. Very light, very strong and worth the money.
I own two dedicated film scanners, both Minolta (before they were purchased by Sony). They still do great work. It is all about the software that runs the scanner. i usually scan at the highest resolution possible and run the dust removal tool. If you do this, you should research how the dust removal tool works. I still shoot film and love the scanners. They are clearly better than flat bed scanners, unless you are doing wet scans (similar to drum scanners). If you are going to get into this, encourage you to do a lot of research or take some classes on scanning. Scan to TIFF's and do post work in Photoshop, and remember a scanned image will need a LITTLE bit of sharpening.
Yes, I agree. Pushing the ISO on a digital camera is like pushing film in the old days. The more you push it, the granier it became.
would have benefited from a polarized filter
typically a 50mm f2 or f4 lens.
Noise is caused by heat across the camera sensor. The higher the ISO, the greater the heat, and the greater the noise. Camera Manufacturers have software that tries to deal with noise but it is an ongoing problem
If you are interested in art for photographers, go look at the Academy of Art University in SF. You can take any class you want for "personal enrichment". A lot of great stuff.
A professor told me that you are going to break a RULE, really break it. Don't just sort of break it and make the viewer think you are just incompetent.