Nikon DK-20C -2 corrective lens for rectangular eyepiece (optional)
Use a Nikon D3300, which allows a diopter compensation to -1.7. Unfortunately, I have 2, x, wherein x varies from time to time with me over the years again from 0.25 to 0.75. Have therefore a corrective lens -2- bought. The -2 apply at a setting of -
