The spot metering area of the Mamiya DTL cameras is shown as a black square at the bottom edge of the viewfinder IIRC. I didn't find them as well built as the SRT101, Nikkormat, or FTb, and told people so when I was selling them. I had two friends in high school buy Mamiyas based solely on price, and both cameras were non-functional within 18 months. Don't mean to slam the whole line, and this could have been a bad run or bad luck, but 2 out of 2 gone that quickly doesn't speak well for the build quality. I also don't see them used and functioning at swaps, but then they were sold in fewer numbers.