Sigma Dg Dn 20mm F2 or 17mm Dg Dn F4 ? Hello everyone, i’m looking for a wide angle, mostly for landscape photographe, and i was wondering if there would really be a noticeable difference between the 17 and 20 focal lenght ? And if it was worth losing 2 stops off light ? submitted by /u/Von_Iggy

Sony E 50mm F1.8 OSS or Sigma 60mm f/2.8 DN Planning to buy a portrait lens for my sony a6000. Currently on a tight budget but I am eyeing either of this two? Any thoughts on what would be better. submitted by /u/Allmessedup0819

Will Sigma 30mm f/2.8 EX DN work with Olympus OM-D E-M5? My cousin wants to buy a camera. Her budget is around $350. I wanted to suggest her Olympus OM-D E-M5 and Sigma 30mm f/2.8 EX DN – Micro Four Thirds Fit. Just wanted to know are those compatible together because I have never used a micro four third cam before… Thanks you. Here is the camera- https://www.mpb.com/en-us/product/olympus-om-d-e-m5/…

Sigma 60mm 2.8 DN Art Lens (M43) – Focusing and Flare Hello everybody, i just bought a second-hand Sigma 60mm 2.8 recently. I have tested it on my Olympus E-PL5 for a few days now. The optical quality of this lens is truly amazing. It is very sharp even wide open. ​ very sharp lens indeed But I just noticed some issues. I would like to hear your opinion about whether this second hand one needs repa…