Canon EF 800mm f5.6L IS USM lens mount_Leica R and relatively light weight- not

and relatively light weight- not quite carbon fibre light

The Nikon SU-4 is a handy little TTL flash accessory that clips into any Nikon TTL flash and accepts communication from any SU-4 compatible Commander flash

Very compact

The Olympus E-510 is a compact Four Thirds (not Micro Four Thirds) DSLR camera compatible with Olympus E-mount lenses

Canon EF 800mm f5.6L IS USM lens mount_Leica R and relatively light weight- notCanon's largest telephoto lens, the 800mm f5. 6L IS USM is a monument, half a meter long and weighing just over 5kg on its own. Worth it? Probably! Focusing is fast, the imaging is excellent, and while you're probably not going to want to make a habit of it, it's balanced enough to be handholdable. This one's in excellent condition, with good focusing and stabilizer, clean glass, only very minor cosmetic wear. Includes hood, softcap, aftermarket pinch