alright, my guess is that your ISO was too high.
the ISO, or Filmspeed, is the measure of how much light is taken in. A closely related ISO system is used to measure the sensitivity of
digital imaging systems. In both digital and film photography, the
reduction of exposure corresponding to use of higher sensitivities
generally leads to reduced image quality (via coarser film grain or higher image noise of other types). Basically, the higher the film speed, the worse the photo quality .
when shooting in lots of light, it is better to have as low an ISO as possible. on a blue bird day i shoot at a 400 or 200 ISO, on a 100-3200 meter, depending on whether i am using a filter on.
I could shoot at a high iso but quicken my shutter speed / aperture combination, which i think is what you did. my shots would have enough light, but also some grain.