Supporting the Nikon F-mount on the Internet since 1994...
Added Canon EF mount support in 2017...
For over 20 years, byThom has provided the best books on Nikon cameras, with the most detail and clarity you'll find. The #1 reader comment about Thom's books? "Thom should have written the Nikon manual [for that camera].”
Z50 Guide New!
D850 Guide
D780 Guide New!
What's New: bythom.com
Nikon film SLRs: filmbodies.com
Nikon Z cameras: zsystemuser.com
Mirrorless cameras: sansmirror.com
Canon 1DXm3 1.3.0 (Nov)
Nikon D6 1.11 (Nov 2020)
Canon 5DmIV 1.3.0 (Oct 2020)
Canon 6DmII 1.1.0 (Oct 2020)
Nikon D780 1.01 (May 2020)
Canon 6D 1.1.9 (Nov)
Canon 7Dm2 1.1.3 (Nov)
Canon 70D 1.1.3 (Nov)
Canon 80D 1.0.3 (Nov)
Canon 1DX 1.2.1 (Sept)
Canon 5Dm3 1.36 (Sept)
Canon 5DS (&R) 1.1.3 (Sept)
Canon 80D 1.0.3 (August)
Nikon D7200 1.0.4 (June)
The camera data pages (Nikon)(Canon) contain current firmware listings. This list is for updates made in last six months.
Accessories is broken into three main subsections: