What do you use a SIGMA 70-200mm F2.8 for? SIGMA Ambassador jim_koepnick says he uses it for "just about every assigment I go on." From sports to avation and even portrait photography, this lens is a must have for every photographer. 🏀 To learn more about the SIGMA 70-200mm F2.8, visit sigmaphoto.com or click the link in our bio! #SIGMA #SIGMAphoto #photography #sportsphotography #aviationphotography #portraitphotography #sigma70200mmsports #sigmasports #zoomlens #telephotolens #sigmalens #photo