Do friends know if I comment on a picture in a Facebook Page?

Answer It depends on the settings used by your friends for their individual accounts. Most likely some will receive a notification and others will not.

Top Q&A For: Do friends know if I comment on a picture in a ...

If you comment on somebody's post on Facebook do your friends see it ?

If the person is a mutual friend then he/she will see your comment

The dude i likes on facebook, i want to comment something on his page but what should i say?

I liked an facebook page and I suddenly can't comment or like any of the posts?

Is there a way to ban my friends to comment in my statuses and pictures in facebook ?

yes you can change the visibility in the settings to private. or at every post u have this lil wheel thingy. there u can change the privacy settings for every post u make on facebook!!