Found on DSLR cameras, the optical viewfinder allows the user to compose shots whilst seeing exactly what the lens sees. This is possible by the viewfinder using a mixture or mirrors and prisms to bounce the actual image to the viewfinder and the users eye.
Sounds good, but are there any cons of using a viewfinder? Read on below.
Pros – The user will see the scene with no lag, nor resolution limits, with only the sharpest clarity coming through to the human eye. Having an optical viewfinder also means that your DSLR will save battery, seeing as the mirror and prisms don’t need any battery to be work.
Cons – The viewfinder will show a small portion of the frame compared to what the final image will actually look like.