Brightness and opacity in Pages Gallery

Hello good afternoon,

I have a problem with the brightness and opacity of the photos in the pages gallery.

If i put a photo in a single post my photo looks very good but if i put my photo in a gallery and i create a pages gallery the photo look opaque.

My web is jonathanmoura.com

and if you see this picture

http://jonathanmoura.com/wp-content/uploads/2013/05/14-the-doctor-valentino-rossi-jonathanmoura.com-jonathanmoura.jpg

can you compare the same photo in a pages gallery in

http://jonathanmoura.com/flagallery/people-2/

Can you help men?

Thanks and regards…

http://wordpress.org/extend/plugins/flash-album-gallery/