Nisi 100 Holder V6 brand_Daiwa The Nikon DB2 is an

The Nikon DB2 is an anti-cold battery holder for the Nikon F3

so depending on your camera and/or lens

with a big electronic viewfinder and convenient dial-based shutter speed and exposure compensation controls

considering

What's the alternative

Nisi 100 Holder V6 brand_Daiwa The Nikon DB2 is anThe Nisi 100 holder V6 is a well made filter holder for 100mm (4x4") filters. It has three filter slots, plus a rotating threaded mount for 82mm filters (though not all may be usable at the same time, depending on the thickness of your threaded filter.) Includes adapters for 67mm 72mm, 77mm, and 82mm lens threads. In excellent condition overall, with minor cosmetic wear which does not affect function. Most notably, there's a touch of scuffing on the