![Amazon.com : Sigma 17-50mm f/2.8 EX DC OS HSM FLD Large Aperture Standard Zoom Lens for Pentax Digital DSLR Camera : Camera Lenses : Electronics Amazon.com : Sigma 17-50mm f/2.8 EX DC OS HSM FLD Large Aperture Standard Zoom Lens for Pentax Digital DSLR Camera : Camera Lenses : Electronics](https://m.media-amazon.com/images/I/518a1dEf+-L._AC_UF894,1000_QL80_.jpg)
Amazon.com : Sigma 17-50mm f/2.8 EX DC OS HSM FLD Large Aperture Standard Zoom Lens for Pentax Digital DSLR Camera : Camera Lenses : Electronics
Is it worth paying more for a Sigma/Tamron 17-50mm 2.8 or should I go for a cheaper Sigma 18-50 2.8? - Quora
![Sigma 884955 - Objetivo para Nikon (distancia focal 17-70mm, apertura f/2.8-4, estabilizador) color negro : Amazon.es: Electrónica Sigma 884955 - Objetivo para Nikon (distancia focal 17-70mm, apertura f/2.8-4, estabilizador) color negro : Amazon.es: Electrónica](https://m.media-amazon.com/images/I/91Zi7S9MxnL.jpg)
Sigma 884955 - Objetivo para Nikon (distancia focal 17-70mm, apertura f/2.8-4, estabilizador) color negro : Amazon.es: Electrónica
![My focus ring doesn't seem to do anything (Sigma 18-50mm f2.8) Is this because the a6k doesn't support it or does the camera have to be in a specific mode. I'm in My focus ring doesn't seem to do anything (Sigma 18-50mm f2.8) Is this because the a6k doesn't support it or does the camera have to be in a specific mode. I'm in](https://i.redd.it/c5tp4jgmrqo81.jpg)
My focus ring doesn't seem to do anything (Sigma 18-50mm f2.8) Is this because the a6k doesn't support it or does the camera have to be in a specific mode. I'm in
![在庫処分特価 Sensors SIGMA 17-50mm 17-50mm Nikon EX OS w/APS-C f/2.8 F2.8 583306 HSM EX for DSLRs DC Lens OS DC HSM Sigma Nikon用 - accionecologica.org 在庫処分特価 Sensors SIGMA 17-50mm 17-50mm Nikon EX OS w/APS-C f/2.8 F2.8 583306 HSM EX for DSLRs DC Lens OS DC HSM Sigma Nikon用 - accionecologica.org](https://static.mercdn.net/item/detail/orig/photos/m46821536809_1.jpg)
在庫処分特価 Sensors SIGMA 17-50mm 17-50mm Nikon EX OS w/APS-C f/2.8 F2.8 583306 HSM EX for DSLRs DC Lens OS DC HSM Sigma Nikon用 - accionecologica.org
![Sigma DC - Objetivo para Nikon (17-50mm, f/2.8, estabilizador, 77 mm), color negro : Amazon.es: Electrónica Sigma DC - Objetivo para Nikon (17-50mm, f/2.8, estabilizador, 77 mm), color negro : Amazon.es: Electrónica](https://m.media-amazon.com/images/I/51k7WKLNDeL._SR600%2C315_PIWhiteStrip%2CBottomLeft%2C0%2C35_PIStarRatingFOURANDHALF%2CBottomLeft%2C360%2C-6_SR600%2C315_ZA1.931%2C445%2C290%2C400%2C400%2CAmazonEmberBold%2C12%2C4%2C0%2C0%2C5_SCLZZZZZZZ_FMpng_BG255%2C255%2C255.jpg)