Hi everyone! I will be the photograph of the football team I was coaching few years ago. I feel like I need a longer focal lens to do a good work and I was hopping that you could help me find out what would be the best fit for me. First or all you need to know that it's my first contract and not very lucrative. That being said, i'm quite on a budget to do so. I actually own a nikon D800 with thoses lens : - nikon 50mm 1.8D - nikkor micro 40mm -Tamron 28-75mm 2.8 macro - Nikon 70-300mm VR Most of the time i'm using the 50mm and the 70-300mm. You need to know that i'm a french canadian so the price i will give you will without a doubt vary with you. I saw a Sigma APO 150-500 F5-6.3 DG OS HSM for 600$ so i was thinking to sell my 70-300 and my micro 40mm to have almost enough to afford the sigma. What do you think? is it a good idea or there is other lens better for the price? Any other advices are welcome. thanks you in advance!!