SUMMARY
While Nikon lacks a true entry-level mirrorless camera, the discontinued Nikon Z50, available used around $500, presents a stronger option than the new Canon EOS R100. The Z50 boasts a more versatile ISO range, faster burst shooting, uncropped 4K video, and a superior tilting, touch-sensitive LCD. Although the EOS R100 has a slightly higher megapixel count, the Z50's 20.9MP sensor is highly capable, and its autofocus system is comparable for beginners. For those on a strict $500 budget seeking the best value, the used Z50 is the recommended choice.
TAKEAWAYS
Used Nikon Z50 is a better value than the new Canon EOS R100 for entry-level photographers.
Z50 offers superior ISO range, faster burst speeds, and better video capabilities.
Despite lower megapixels, the Z50's sensor performs well and is pliable in post-processing.
The Z50 features a tilting, touch-sensitive LCD, unlike the R100's fixed screen.