Hello! My name is Joe and I am new to the forum. I did a search on the topic, but maybe I am typing in the wrong keywords. Please link related content in the info if available! I just bought a black Nikon F2 with DP-1 from an original owner. The meter was not working at the time of purchase so I popped in two 675 batteries based on Lex Jenkins recommendation here. The meter now appears to be working! Test, aperture, and shutter speeds all affect the meter as it should. The Issue: The meter does not work for 'B' and 1 second shutter speeds. The needle stays to the right and does not move. I can understand why 'B' would be unnecessary, but why doesn't 1 second work? Also, related, I tested the meter on a brick wall in the shade on a clear day. The DP-1 reads exposure is 1/500 at 2.8, 400 iso. Using two popular light meters for iOS, Pocket Light Meter and myLightMeter, the correct exposure may be 1/1000, 2.8, 400. My theory? I think the DP-1 ASA/Shutter Speed connector may be off a stop? So it reads 1 as 'B' -- 1/2 as 1 -- 1000 as 500, etc. Anyone ever heard of this? Or am I just going crazy? I am okay with stepping up the shutter speed when using the meter, but I feel like (if there is an issue) this problem may be easily fixed? My equipment: Nikon F2 DP-1 K Focusing Screen Vivitar 35mm 2.8. -- Anyone have a 1.8 or 2 prime they don't need?