Most Common Rechargeable Batteries

Works pretty well. It has an AC adapter and ability to use a couple of the common rechargeable batteries.

Quality rechargeable batteries.

These are the best rechargeable batteries I've ever used.

Rechargeable batteries - Great Life!!

The only way to go! Rechargeable. Why use batteries that need to be disposed of?

Good rechargeable batteries and charger.

the Eneloop Pro rechargeable batteries are the best there is.

Most of the batteries recharge in about an hour.

Most of my caps are the slip-on type that's more common in large-format stuff, but I got these for some of my vintage Nikkors. I use a combination of a custom step up ring from SK Grimes and a B+W filter then I cap them with these caps. These look very slick, and they work well. I've tried some of the cheaper more generic brands, and these Nikon caps have smoother edges, have less wiggle, fit more flush, and have small details like the fact that the pinch flats taper outwards slightly so your fingers don't slip off the caps when you pick them up or remove them that make them so much better to use if you're busy and have things to do. Many vintage rangefinders have cloth shutters, so you can just cover the lenses with this to protect them when you're out and around.

Step-up rings are a common tool for fitting lenses and filters of different sizes. Most any will do, but some are better than others. Good thread fit is essential, but that's usually achieved. What the PRO Sensei rings add is a slight knurl-like grip which can be a help when unscrewing sticky filters. (Hint: don't over tighten them in the first place!)