Common mistakes which spoil photos
I think that all of us make one (or more) of the following common errors
Reflection of the Flash in the background

Red Eyes

Lines that are supposed to be horizontal or vertical, but aren’t.

Building lines twisted

Corners darkened by the incorrect use of a filter

Abnormally blue skies from the use of a filter

Images with too much or too little depth of field.

Source: dZoom



