Canon RF 200-800mm F6.3-9 IS USM Lens Image Quality
View the image quality delivered by the Canon RF 200-800mm F6.3-9 IS USM Lens using ISO 12233 Resolution Chart lab test results. Compare the image quality of this lens with other lenses.
www.the-digital-picture.com
The 100-500 is giving slightly cleaner images. But I will get the 800 as in real life it would not matter.