Canon
Lens reviews for the Canon system.

Cokin 0.5x Wide-Angle Lens for Camcorders
Wide-angle and macro lens in one.

Kenko KVC 0.5x Pro Video Wide Angle Converter
A solid professional wide angle accessory lens.

Leica
Lens reviews for the Leica system.

Nikon
Lens reviews for the Nikon system.

Novoflex Nikon Lens To Canon EOS Body Adapter
Review of this unreal unity.

Panasonic
Lens reviews for the Panasonic system.

Raynox MX-3000PRO 0.3x Semi-Fisheye Ultra Wide Angle Conversion Lens
An extraordinary wide angle lens that doesn't turn your videos into fish eye.

Sigma
Lens reviews for the Sigma system.

Sima SLS-20 2x Telephoto Conversion Lens
An inexpensive telephoto accessory lens.

Some thoughts on the Olympus 1.45x Teleconverter Lens
Personal review of this teleconverter for digital cameras.

Sony VAD-PEA Lens Adapter
A God-sent item!

Teleconverter Magnification Comparison
Are you really getting the 2x magnification that the factory claims?

Tokina
Lens reviews for the Tokina system.