@jeff you know, it’s hard. I mostly use the 25mm, it works in every situation and you can still get very good headshots if you need to. It is very rare to find yourself in a situation where the 17 would work better than the 25. I think the 17mm it’s good for very tight indoors for example, it is also great for street photography because you get more in the frame, as you probably know. I like that I can go from auto focus to manual on the lens itself, I don’t have to go into the camera’s settings (I have the Olympus OM-D E-M10 Mark III). And even at that focal length you can still some decent bokeh. All that being said, for the past month or so, it’s been the lens that it’s always attached until this past weekend.