Variable ND Filters

[neuroanatomist]

Having all your lenses be the same filter size would be the other way to decrease what I carry. But, love my EF 24-70 II, which is 82 mm. Most used lens by far. Thus, I have carried both 77 mm (for 100-400 II and 16-35) and 82 mm (for 24-70 II) when traveling.

I did that when I had the EF 24-70/2.8 II. The TS-E 24L II also takes 82mm filters as did the EF 16-35/2.8 II that I had for a while, so for a period of time all I needed were the 82mm filters. Now that I have the RF 100-400 that takes 67mm filters (of which I have none, though I do have a step-up ring that precludes the hood), I need to decide if I'll get 67mm filters or just not use filters with the 100-400 (I haven't yet used them with the 100-500).

So, Breakthough finally got me with their ads, and I do have their variable ND coming. I'll do a quick comparison and if better I'll keep it.

After my interactions with their founder on CR, I won't buy anything from them. But I hope they perform well for you.