Hi! To me, the Reviews section of fredmiranda.com is a great tool. I'd like to contribute by giving a list of lenses which are not yet covered by it. Who knows, maybe they could be added one day? I'm especially interested in experiences with the Sigma 4.5 as it seems to be quite unique. And the Sigma 50 f/1.4 and how it compares to the corresponding Canon offering.
Note: All of the lenses are available for Canon EF mount, that's the one I'm using. Sorry, did not cover the Nikon part.
Canon Prime Lenses
Canon EF 24mm f/1.4 L USM II
Canon EF 200mm f/2 L USM I
Canon Zoom Lenses
Canon EF 28-90mm f/3.0-5.6 I
Canon EF 28-90mm f/3.0-5.6 III
Canon EF 80-200mm f/4.5-5.6 II
Canon EF 90-300mm f/4.5-5.6
Canon EF 90-300mm f/4.5-5.6 USM
Canon EF-S 18-55mm f/3.5-5.6 (no IS)
Canon EF-S 18-200mm f/3.5-5.6 IS
Sigma Prime Lenses
Sigma 4.5 2.8mm f/2.8 EX DC HSM Circular Fisheye
Sigma 10mm f/2.8 EX DC HSM Diagonal Fisheye
Sigma 50mm f/1.4 EX DG HSM
Sigma 50mm f/2.8 EX DG Macro
Sigma 300mm f/2.8 EX DG APO HSM IF
Sigma 800mm f/5.6 EX DG APO HSM IF
Sigma Zoom Lenses
Sigma 18-125mm f/3.8-5.6 DC OS HSM
Sigma 18-200mm f/3.5-6.3 DC Asp IF
Sigma 50-150mm f/2.8 EX DC APO HSM II
Sigma 55-200mm f/4.0-5.6 DC
Sigma 70-200mm f/2.8 EX DG Macro HSM II
Sigma 70-300mm f/4.0-5.6 DG APO Macro
Sigma 120-400mm f/4.5-5.6 DG APO HSM OS
Sigma 170-500mm f/5.6-6.3 DG Asp APO RF
Sigma 200-500mm f/2.8 DG Asp APO
Sigma 300-800 f/5.6 EX DG APO HSM IF
Tamron Primes
Tamron 90mm f/2.8 Macro (non-DI)
Tamron Zooms
Tamron 18-270mm f/3.5-6.3 Di II VC LD Asp IF
Tamron 28-300 f/3.5-6.3 XR Di LD Asp IF (non-VC)
Tamron 55-200mm f/4.0-5.6 Di II LD Macro
Tamron 10-24mm 3.5-4.5 Di II LD Asp IF
Tamron 70-200mm f/2.8 Di LD IF
Tokina Primes
Where's the difference between the "Tokina AT-X 17 AF PRO 17mm f/3.5" and the "Tokina Tokina AT-X 17 AF Pro"?
Tokina Zooms
Where's the difference between the "Tokina AT-X 165 PRO DX" and the "Tokina AT-X 165 PRO DX AF 16-50mm f/2.8"?
Carl Zeiss Primes
Carl Zeiss Distagon T* 21mm f/2.8
Carl Zeiss Planar T* 50mm f/1.4
Carl Zeiss Planar T* 85mm f/1.4
... and many more from Carl Zeiss. But these are available for Canon EF Mount (manual focus only)
Lensbaby Primes
Lensbaby 1.0
Lensbaby 2.0
Lensbaby 3G
Lensbaby Muse
Lensbaby Composer
Lensbaby Control-Freak
Lensbaby Optic Dual-Glass
Lensbaby Optic Single-Glass
Lensbaby Optic Single-Plastic
Lensbaby Optic Hole/Zone
Hartblei primes
Hartblei Super Rotator 35mm f/2.8
Hartblei Super Rotator 65mm f/3.5
Hartblei Super Rotator 80mm f/2.8
Hartblei Super Rotator 120mm f/2.8
Loreo primes
Loreo Lubot
Loreo Perspective-Control Lens in a Cap
Loreo 3D Lens in a Cap
Loreo Lens in a Cap
Also: Any chance of ordering the lenses by their focal length numerical instead of alphabetical?