Enjoying the Optics

I’m trying the Olympus 12-40mm f/2.8 PRO lens.  I like the image quality.  On the E-M5 III camera, it brings joy back to my eyes; but, I wish the lens was lighter.  If I thought that I could manage when going out with only a single prime lens like either the Panasonic 20mm f/1.7 or the Olympus 45mm f/1.8 lens, I wouldn’t need the heavy 12-40mm f/2.8 lens.  An advantage with the 12-40mm lens is that it is weather resident.  Do I need that?  I’ll think some more about it. Hmm, most of these were taken at 40mm focal length, and it wasn’t raining.