The shockingly simple answer is by adjusting the camera’s diopter. If the word diopter doesn’t ring a bell then keep reading and if it does keep reading nonetheless. Adjusting the diopter of your viewfinder is one of the smallest yet important things you can do to ensure that your scene is focused properly. Fine-Tuning What The Camera Sees Turn your Canon Rebel EOS camera on. Press the “Menu” button on the back of the camera. Use the left or right buttons on the four-way controller to scroll to the “Custom Functions” menu. Press the “Set” button in the center of the controller to select it. Scroll to “C.Fn II” and press “Set.”. Scroll down to “#07- Diopter Check the camera's drive mode settings. Press the Drive mode button (located near the top-right side of the camera) and rotate the main dial to select the high-speed continuous shooting mode. Make sure it is not set to single shot or any other mode that disables burst shooting. Thus 50mm = 20 diopters and 120mm = 8.33 diopters. The total is 28.33 diopters. Now we convert back to millimeters thus 1/28.33 X 1000 = 35.3mm (the focal length of the combination). The power of the reading glasses in diopters and the adjustment of the camera eyepiece correction are the same. A locking diopter knob is an exciting addition to Monarch M7 binoculars, a feature not previously available at this price point. Compact and lightweight. Starting at just 16.4 ounces (8x30 model), Monarch M7 binoculars are a compact, lightweight companion for adventures of any kind. Diopter Adjustment (on 80D) I'm nearsighted at 300 degrees. My diopter dial is set to the maximum negative limit for me to see the digital readings clearly even when wearing glasses. Without glasses, I have no way to adjust a more negative diopter value since it seems the 'neutral' setting is at the maximum negative. jrhoffman75.thanks for that. I've been messing with it all morning (and ordered the -2 diopter). Anyway, following your advice, I think things just may be adjusting back my way :) Thanks for your help. I'll have a diopter for my retirement, lol. Cheers.Thanks again. By default, the rear LCD is blanked by the shutter. On every Canon DSLR I have used, you can disable the shutter from blanking the rear LCD. If you disable the shutter blanking the rear display, use the [INFO] button to display the exposure settings. Now when you press the shutter, the settings remain displayed. .

diopter adjustment on canon camera