What is the best lens for cannon 1D4 and 5D2?

There is no best, only the best. This is the most suitable, not according to the camera, but according to the shooting needs.

1d30,000 yuan, lens EF 24-70mm f/2.8L USM standard zoom lens, one of which is commonly known as "awesome", who knows 1 1200.

5D2 2 1200 lens Ef24- 105 mm f/4Lisum standard zoom lens is 5D2 with good head, who knows, 8000.

If you don't want another EF 14mm f/2.8L USM wide-angle fixed-focus lens, who knows 15200.

Another EF 100-400 mm f/4.5-5.6L is USM telephoto zoom lens, which is a sharp weapon for bird shooting. Whoever uses it knows 12000.

In addition, Golden Bell Carbon Pioneer Geo N840S tripod (bearing 14kg)3050+ Jiebao DG-3 magnesium-aluminum alloy three-dimensional suspension tripod Yuntai 2 100.

Explorer series 5737 shoulder bag travel camera bag 2900, Kingston 32GB 233x SDHC flagship XX series SD memory card (sdha 1/32GB)3000 3000 I wrote it correctly. HOYA filters 500- 1000 (this is not the best), other hair dryers, lens pens, deer skin wipes. Another computer with high speed, stability and high color reproduction, such as iMac MC8 13CH/A 27 inch all-in-one machine. 12600 (the reason for choosing it is that you can insert a large-screen SD card), but at the expense of convenience, let's have a MacBook Pro MC723CH/A 15.4 inch widescreen notebook 15600. . . . .

This will basically live together.

There seems to be a cowhide wristband missing, and the market price ranges from 500 to 700. You'd better buy another incubator, ranging from 3000 to 20000.