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I'm looking at picking up some filters for my lenses. My 50mm and 35-80mm lenses use 49mm filters. My 70-210mm (which I am not sure if I'll keep) and 28mm lenses both take 52mm filters. My 100-300 lens takes a 58mm filter. (I also have a Tamron 28-300mm lens that takes 72mm filters, but I'm not going to try and step all of them up to 72mm.)
Should I get filters for each size, or would it make more sense to get one size and step them up to that? I originally was thinking perhaps doing a 49 to 52 and getting the filters in 52mm. But then I realized my 100-300 was a 58mm lens and then thought about doing a 49 to 58 and 52 to 58 and get the filters in 58.
The filters I'm considering picking up are maybe a few ND filters for bright days when I want to either shoot wide open or do some long exposures to smooth out water and a CPL, mostly for seeing into water. I'm rather new to all of this, so I'm not sure if I'd need any filters for the 100-300. The fact the front turns while focusing on it, the 70-210, and the 35-80 I understand can be an issue with a CPL as well.
With work, the weather, and other things, I've not had a lot of chance to really try out my kit a whole lot, so I'm not really sure what I'll end up using the most. Most likely, the lenses that I see using where I would need filters would be the 28mm and 35-80mm lenses and probably the 50mm as well. (Also the Tamron, but as I said, not going to try stepping my ø49 up to 72mm.) I could be wrong on what I'll end up actually using. But the 28mm is probably my goto right now for landscapes and general walkaround, followed by the 35-80 for the zoom versatility. Though the 28-300 is even more versatile, but also heavier.
And now that I've rambled way too much, would you recommend using a step-up ring on the 49 and go to a 52 or a 58? I'm not sure if I'll end up with any other lenses that are a 58 and I don't see the need for a filter on my 100-300 at this point, but not sure if I'm missing a good use-case for this. (Beach perhaps? I dunno.)