Canon Eos 7d Aperture
what lens do you recommend? Canon 7D?

Canon – EF 70-200mm f/4L IS USM telephoto zoom lens for Canon EOS $ 1,349.99 Canon – EF 70-200mm f / 2.8 USM telephoto zoom for Canon SLR $ 1,449.99 What is the difference? just open? pros and cons, mainly for shooting sports outdoors MTB and surfing

Always get the highest goal you can afford (the smaller the f / stop, the "faster" which is to allow more light). I have the f / 2.8 L 70-200 and is a great lens (but heavy … 2.8 pounds compared with 1.7 pounds for the f / 4). I use a monopod to stabilize (Manfrotto 685 B http://www.bhphotovideo.com/c/product/387806-REG/Manfrotto_685B_685B_NeoTec_Monopod_Deluxe.html). I will debate society version, but I read that if you use any material (mono or tripod), it is recommended that the SI is turned off. So, since I use a monopod I have the f / 2.8, without the SI and saved about $ 700. B & H is $ 1,300 for 2.8 http://www.bhphotovideo.com/c/product/91680-USA/Canon_2569A004_70_200mm_f_2_8L_USM_Autofocus.html Specifications and f / 4 $ 1210 http://www.bhphotovideo.com/c/product/457678-USA/Canon_1258B002AA_EF_70_200mm_f_4L_IS.html Specifications

Canon Eos 7d Aperture

Canon 7D music video test shoot By Ali Mere