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 -1 on the camera (see manual). Furthermore, it should be noted that the rubber eyepiece "cover" for eyeglass wearers no longer fits. Property me therefore a cheap bought by "Profox" (softer plastic) and those placed with slight force, which has worked quite well. Whether I the two parts can ever separate them again without breaking a part of, I had better not try it. But it sits and works.