能否將此段英文幫我翻譯一下“ Do be careful though when you crop the images to tight it Can take away from the subject and it is always recommended that your subject face never be cut off unless it seves a purpose. There is also the issue of noise in your pictures it is a common problem with taking digital photographs. It can be cause by having the wrong ISO Setting or if you are zooming into your images to much. Do you do a lot of zomming in from the original image”。

我認識的一位朋友的朋友是學過攝影的，他就把我近來出遊時拍的那幾張人物特寫圖片轉給他看了看， 她回的email里的這句話我就弄不太明白是啥意思？