All About Photographic Lenses.
Specifications, comparison, reviews, MTF-charts for lenses by Canon, Nikon, Sony, Pentax, Olympus, Sigma, Tamron, Carl Zeiss, etc.

Canon EF 300 mm f/ 2.8 L IS USM used:

NameFull namePlaceScoresRank
1Budmaster 42.55lvl.1 (Lens-Learner)
2John Finn 17.5lvl.1 (Lens-Learner)
3Alexey_Barov 104.8lvl.2 (Lens-Adept)