Please help a Beginner with Diopter Adjustment

Discussion in 'Beginner Questions' started by Troy, Mar 16, 2026 at 4:47 PM.

  1. Troy

    Troy New Member

    Joined:
    Monday
    Messages:
    1
    I tried Canon support - And they didn't seem to understand how it works.
    I have a Canon T100 . The standard viewfinder is too blurry for me to use without my glasses, and I hate shooting with my glasses on. I primarily shoot with my left eye. I tried using a -.5 diopter adjuster, and that made it worse. What should I order to get as close as I can to what it looks like with my glasses on? My prescription is below for reference.

    Right (OD) -1.50 0.00 0
    Left (OS) -0.75 -0.75 130
    NV-ADD +1.50
     
    Troy, Mar 16, 2026 at 4:47 PM
    #1

  2. johnsey

    johnsey Site Moderator Staff Member Site Supporter

    Joined:
    Apr 21, 2017
    Messages:
    2,407
    Location:
    Fargo, ND
    Equipment:
    5dMk4, 5dsR, 5dMk2, 20D, 70-200 2.8L IS, 100mm 2.8 Macro USM, 50mm 1.4, 85mm 1.8, 17-40mm 4.0L, TS-E 24mm 3.5L II, Rokinon 14mm 2.8; Pixma Pro-100
    Based on this you may be needing the Near Add number....But I always found diopter adjustment to not be worth my effort, I always shoot with glasses on.
    https://www.ephotozine.com/forums/topic/how-do-you-know-which-diopter-to-use---117278
     
    johnsey, Mar 17, 2026 at 9:26 AM
    #2

Share This Page