I have a Canon 600D and in manual mode, if I make the shutter speed higher, then the screen turns blackish/black; but with the same settings when I open the camera's flash it works well. In the day, the flash looks bad--that's why I can't shoot at daytime in public.

  • 2
    \$\begingroup\$ Please post a sample image (with shooting parameters - shutter speed, aperture, ISO) for both an image taken with slow shutter speed which looks good and a dark one with faster shutter speed. \$\endgroup\$
    – Philip Kendall
    Jun 29, 2015 at 10:58
  • \$\begingroup\$ Are you asking why making the shutter speed faster makes the exposure dark in manual mode? Can you explain what you expect to happen? \$\endgroup\$
    – mattdm
    Jun 29, 2015 at 11:17
  • \$\begingroup\$ I don't quite understand the flash part. Probably you are using a faster shutter speed than the sync speed when using a flash. \$\endgroup\$
    – Rafael
    Jun 29, 2015 at 13:21
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    \$\begingroup\$ @Rafael - I think he's saying the photo is (a bit) better with flash, meaning there is more light, but it wont help (much) outdoors. Hard to tell though... \$\endgroup\$ Jun 29, 2015 at 13:43

1 Answer 1


Quite simply the faster your shutter, the less light you get to the sensor.

You have 3 options:

  • lower your shutter speed
  • widen your aperture
  • increase sensor sensitivity (ISO)

The point of manual mode is to give you COMPLETE control, but it sounds like you dont yet understand the way exposure works.

I would suggest you use P (basically full auto aperture/shutter) until you have learned a bit more

  • \$\begingroup\$ -1 for completely failing to mention ISO. \$\endgroup\$
    – Philip Kendall
    Jun 29, 2015 at 13:10
  • \$\begingroup\$ Hehe! ah yes, totally forgot about that (fighting with a server currently, added...) \$\endgroup\$ Jun 29, 2015 at 13:13

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