Normally you can say "照片里有。。。" or "这是。。。" If the picture that you are showing is about people, you can say "照片里的是(who）。。。" If you want to be polite, you can add "请看" at the beginning of the sentence.

yeah, it's ok ,quite native u can say 图里有 这张图是 图片里包含

这要看具体的语境啦，

may be you can say 图里有...or 这幅图里表现了...because show in chinese means 展现 展示 表示 表现