Are all graphic designers good in photography?

Not all graphic designer are good in photography but it is an additional skill that all designer must know.

designers have differerent perspective design depends on their mood and there like.. only those who have great abstract skilss can better have understanding

it's not compulsory, like it depends on one's interest but i think one who get's into this field can do a good job in photography!

It's a plus for a graphic designer to be a good photographer but it's not a must.

I wouldn't say graphic designers are "good" in photography, yet the have a clear understanding of how photography is related to graphic design. They may not take the best photos, but they know how to edit them. 

No, Graphic designers are not good photographers. A photographer has a different set of skills.It is quite a physical task since most of the professional cameras are very heavy.Graphic designers concentrate on creating a picture that is aesthetically pleasing as well as functional. They are skilled at typography, making creative layouts,colour theories and most important thing graphic designers dependent on taste.

Most certainly not.  Though graphic design plays a critical role in all media production the feilds are completely unrelated.

Ideally, all graphic designers should be good in photography because graphic designers are supposed to be good in combining colors and designs.  Unfortunately, not all graphic designers are graduates of a design course in school so not all have learned the background of colors, lines, art and design.

No that not true all graphics designers are not good in photography

Graphic designers are not good in photography because all graphic designers are destined to enhance the pictures which the photographers taking.

i would not say all graphic designer are good in photography. But it is a plus point for graphic designer to be a good photographer.