Please have a look at these models:
class Album(models.Model): user = models.ForeignKey(User) name = models.CharField(max_length=200) pub_date = mode
You are almost there. you should be using photo_set instead of image_set
photo_set
image_set
>>>t_album.photo_set.all()
i.e the lowercase modelname with _set
_set
If you want the list of photos in 1 query,
photos = Photo.objects.filter(album__user__username='tika')