• For pro-sized short zooms and primes lenses up to 15cm (5.9") tall with a filter size up to 77mm in diameter
• Lens that will fit inside 10-22, 17-40/4, 24(28)-70/2.8, 35-70/2.8, 24-120/3.5, 24-105/4, 16(17)-35/2.8, 20-35/2.8, 28-200/3.5, Canon 85/1.2L, 80-200/4.5, 100-300/4.5, and numerous large diameter prime lenses. Also provides a loose fit for the Canon 28-135 IS lens (for a snug "slower to use" fit, choose the E110).
• Holds most medium 6x7cm medium format lenses up to 180mm in focal length and up to 77mm filter size, including the Hassy 6x6 40mm lens. The E110 lens pouch above does provide a snugger (better) fit for 645 and 6x6 lenses however.
• Too short for 70-200/2.8 lenses
• This pouch has a VERY LARGE inside diameter and may not be suitable for all lenses -- measure carefully -- consider the smaller E110 instead.

Unconfirmed tight fit: Nikon 70-180/4.5-5.6 Macro.
Confirmed "near perfect" fit (10/07): Sigma 150/2.8 Macro with tripod collar w/ hood reversed.