As a newbie, I have a question regarding the fixed aperture lenses like the Tamron 17-50mm f2.8
I understand that bigger the aperture smaller is the focal plane. So, with a fixed aperture of say f2.8, wouldn't it be difficult to take landscape pictures with bigger depth of field? Also, if you want fuzzy motion with slow shutter speed, the exposure will be too much?
If yes, why are such lenses more expensive and popular because it would be less versatile than lenses with variable apertures?
I also noticed a lot of bros here carrying Tamron 17-50mm f2.8 with a 50mm prime lens f1.8. Wouldn't that be overlapping considering f1.8 is generally un-usable?