Try shooting your Sony Alpha DSLR without your glasses.
Sony Alpha DSLR cameras contain a diopter adjustment. This adjustment simulates wearing eyeglasses and can compensate for nearsightedness or farsightedness, making the markings in the viewfinder easier to read. Using the diopter adjustment is especially crucial if you will be manually focusing your Alpha DSLR. If the focusing surface is not perfectly clear, you will end up misfocusing your photographs. Be aware that the diopter adjustment cannot adjust for everyone's vision. The A900 works from -3.00 to +1.00, meaning that if you have a strong prescription, you will still need to wear glasses or contact lenses.
Instructions
1. Hold your Alpha DSLR camera to your eye and look through the viewfinder to see whether its markings are blurred. You may find it easier to see them if you point your camera at something that is relatively bright.
2. Place your index finger on the diopter adjustment dial, which is located slightly below the upper right corner of the eyepiece. Be careful not to put your finger in your eye.
3. Rotate the diopter adjustment dial down toward the "+" if you are farsighted or up toward the "-" if you are nearsighted. For the best adjustment, go a couple of clicks beyond what looks like the perfect setting, then go back to find the true perfect setting.
4. Remove the rubber eyecup by pressing in and up on its bottom if it is blocking the diopter adjustment dial.
Tags: diopter adjustment, Alpha DSLR, adjustment dial, diopter adjustment dial, Sony Alpha, perfect setting, Sony Alpha DSLR