New iMac 27" Screen Brightness Too Dim?

Discussion in 'iMac' started by shiaulou, Aug 24, 2011.

  1. shiaulou, Aug 24, 2011
    Last edited: Aug 24, 2011

    shiaulou macrumors newbie

    Aug 24, 2011
    Hi everybody,
    New to the forum, and I have a question for you all.

    I just picked up a new 2011 Imac 27" and I noticed that the screen is not very bright when compared to my 2010 Macbook pro 15". I tried calibrating both monitors and there's no doubt that the mbp has the brighter screen. At full brightness for both, it's quite drastic, almost a 30 to 40% difference (gauging by the brightness meter when you press the keyboard buttons). My Vizio 32" lcd tv is also brighter than the Imac.

    To those who have experience with the Imac 27 and MBP 15, how do the screen brightnesses compare roughly speaking?

  2. Macknife macrumors newbie

    Aug 10, 2011
    It seems fine on my machine. Try unchecking the box that says automatically adjust brightness as ambient light changes. That might help.

  3. shiaulou thread starter macrumors newbie

    Aug 24, 2011
    my imac doesnt even have that option, but my mbp does. doesnt really help though since im setting both to max brightness right now when im doing the comparison. both running 10.6.8.
  4. basher macrumors 6502


    May 27, 2011
    Glendale, AZ USA
    My iMac is so bright I can get a tan from it.
  5. Texran macrumors regular

    Mar 12, 2011
    Same here, I have mine turned down to like 30 % of bar
  6. Belmana macrumors newbie

    Aug 31, 2010
    My iMac does have the option to automatically adjust brightness. It can be found in system preferences/display.
    Even with this option ticked on my iMac if I set it to maximum brightness it is way too bright. I usually have the brightness set to around 50% and it is still very bright.
  7. shiaulou thread starter macrumors newbie

    Aug 24, 2011
    bummer, just put it side-by-side with my friends 2010 imac 27" and its not even in the same ballpark. mine is way dimmer at max brightness. guess ill have to return this to amazon... my imac at 100% brightness is comparable to his at 40% brightness.... bad backlight maybe?
  8. leman macrumors G3

    Oct 14, 2008
    If you believe that your iMac is too dim, than its probably really defective. I can describe my iMac with many different words, but "dim" isn't there. Actually, when turning the screen to 100% I have the feeling it could burn my eyes out.
  9. iMacJunkie macrumors regular

    Aug 7, 2011
    I agree. Even at 50% I feel like I can get a tan from the brightness of this thing. Incredible.
  10. iSayuSay macrumors 68040


    Feb 6, 2011
    So bright it could tan your skin .. nicely put .. and so true too here


    Maybe OP should recheck his iMac and compare it with another unit. Maybe it's faulty or something. No way MBP has more brightness than huge gigantic iMac. You have to put more LED in there to lit iMac screen compared to MBP's screen.

    Any particular reason you want to use Mac display on its full brightness?
  11. jaikob macrumors 6502


    Jul 1, 2008
    Freeland, MI
    As other have been saying, "Dim" is not the word I would use to describe the display at 100% brightness.
  12. shiaulou thread starter macrumors newbie

    Aug 24, 2011
    It's not that I want to use my Imac at 100% brightness to burn my eyes out, it's that in its current state it cant even get to that brightness level. so it must be faulty because my macbook pro can even get to brighter levels.

    i dont want to keep a brand new $1600 computer that has a faulty backlight...
  13. basher macrumors 6502


    May 27, 2011
    Glendale, AZ USA
    Let us know how it goes after you return the defective unit and get a replacement.
  14. TimeBandit macrumors newbie

    Jan 26, 2012

    Be sure when in calibration to try the Gamma 1.8 setting. So System Prefs -> Color -> Calibrate to try the Gamma setting. Then back to System Prefs -> Display to try brightness slider at bottom.
  15. WardC macrumors 68030


    Oct 17, 2007
    Fort Worth, TX
    My 27" iMac is soooo dang bright I have to turn it down a couple of notches, and my MacBook Pro is bright too.

    The dimmer screens were those older MacBook Pros and PowerBooks with CCFL lit panels. The new iMacs are especially bright in my opinion. However, I use in a room with all the windows closed, with no outside light (also due to glare), and it is very bright. If I used it near a bright lit window it might be a different story, I am not sure.
  16. derbothaus macrumors 601


    Jul 17, 2010
    Why? All the elements are now created to be viewed in 2.2. 1.8 is a contrast washout. Has nothing to do with backlight power.
    If anyone needs a 20"+ screen to be brighter than 250cd/m2 maybe they need a doctor visit. The macbook are brighter on average because they are mad e for multi environment and travel. Full brightness looks terrible, couple notches down should suffice.
  17. ocan71 macrumors newbie

    Sep 28, 2012
    Universal Access

    Also try to put the display in to normal on prefference-universal access-seeing (on left top)-display, then calibrate your monitor.
  18. BSoares macrumors regular

    Jun 22, 2012
    My iMac is pretty damn bright too, I have it at the lowest possible and it's still too bright when the room doesn't have a light on or the blinds open.
  19. alove811 macrumors newbie

    Jul 18, 2015
    OMG I thought I was the only person who thought their iMac was too dim... I have literary have messed with every setting known to mankind. I have even tried to re-calibrate the colors. I have even look for apps that would make my screen brighter and paid for them without any luck. I so happy I came across this forum! Thanks everyone now I know its not me going mad
  20. alove811 macrumors newbie

    Jul 18, 2015

    Were you able to return your computer without any issues?

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