Apart from being a silly set up, it is also cumbersome and potentially prone to misleading information: a DSLR uses any manner of matrix/evaluative/partial of combination meter and does not know what it is looking at and furthermore, doesn't care. In LF, you need a good working understanding of the Zone System and this in turn implies an understanding of spot metering. LF is far, fare removed form the nonsenses that is hyper-everything digital: it is photography at its most basic and cerebral where YOU (not the camera) do the thinking and assessment. Invest in a versatile spot/incident/reflected meter, read up on skills, practice and refine those skills to bring out the very best that LF is capable of.