'Guy,

I don't gun any prime glass,L or otherwise. Everything illustrated is zoom generated and as a rule,they do pretty good.

Will be gunning the new 5D MK II next time home,for a dedicated Saltwater Safari and I hope to catch a few good images during the fray. The Canon 100-400m L remains an absolute monster of a lens,due to it's versatilty and IQ. Though it's "slow" in aperture,the new herd of Canon DSLR's aid that nicely in their ISO boost abilities.

I shoot alotta Canon 70-200 F/2.8 too,but it's pretty snug for backdeck Hero Shots on a boat,even on a fullframe body and generous deckspace. I'll have 4 bodies with me on the jaunt,which will help keep maritime lens swapping to a minimum. Will go 24-70 F/2.8 L on the 5D MK II,100-400 L on the 40D(banking that 1.6x inherent crop factor for reach),17-40 L on the 1Ds and 70-200 F/2.8 L on the XTi(nice frame rate for tight frames of mouth agape 'Lings surfacing and 'But Dancing).

I love prime glass for a riflescope,but it don't swoon me for Outdoor Photography and it's ever changing scenarios. The 500m F/4 excluded,as it is The Holy Grail for critters,but $5500 is a coupla more rifles and that'd be my truest affliction and blood interests me more than prints.

May slum the 100mm Canon F/2.8 USM Macro for tightly framed Chromer study pics and for accurate representation of the various spins of finite deviation,applied to tackle presentation patterns...if only for giggles.

Will be curious to see what Canon unveils in their newest Pro Body and I can see me taking that plunge,assuming they don't drop the ball. All in all I can't complain,as I've most bases covered,though advances in bodies always intrigue,while glass is a far more static avenue.