CMK35d & 600 ext flash on not allowing to adjust shutter speed

Discussion in 'Technical Troubleshooting' started by Joanne B., Apr 21, 2022.

  1. Joanne B.

    Joanne B. New Member

    Joined:
    Apr 21, 2022
    Messages:
    2
    Location:
    Michigan
    Equipment:
    canon 5 d mark 3, canon flash
    Hello All!
    Hope you can help me. I have a Canon M3 5D and Canon 600 flash . While doing a photoshoot, I noticed that I was unable to adjust my shutter speed past 1/200 with the flash on. I use flash in portrait photography for fill in. I have always been able to adjust, consequently,I had to use a higher F stop than I wanted to. When flash off, I was able to adjust shutter speed up. I tried another flash, same kind, and same problem. Something must have gotten set in my camera wrong, and I cannot find it.
    Thanks

    Joanne B
     

  2. Joanne B.

    Joanne B. New Member

    Joined:
    Apr 21, 2022
    Messages:
    2
    Location:
    Michigan
    Equipment:
    canon 5 d mark 3, canon flash
    Well I figured it out. I did not have the high speed sync button on the flash on!!
     
    johnsey likes this.
  3. johnsey

    johnsey Site Moderator Staff Member Site Supporter

    Joined:
    Apr 21, 2017
    Messages:
    2,120
    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
    beat me to the response... :D
     

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