The small sensors in camera phones cannot run at high ISO speeds (i.e. high sensitivity to light, permitting indoor photos without a flash) without introducing large amounts of noise. In most circumstances, this precludes indoor photos other than in the best-lit places.  If you have to shoot indoors, consider what artificial lighting sources you have. Avoid fluorescent light, as it can cast a green tint on your subjects.   Make sure you camera is stable in low light. Camera phones slow the shutter speed in low light, and this can capture any movement you make and blur your photo. This will either force the camera to under-expose the rest of the shot, or cause the camera to blow out the highlights on the brightest parts of the shot. The latter is worse, since it is sometimes possible to extract details from parts of the image that are too dark, but impossible to recover blown highlights (since there is no detail therein to extract). On the other hand, this can be used to artistic ends, such as with bright light streaming through a window.  People pictures will look best in diffuse lighting such as open shade, under a cloudy sky, or in bright artificial light.  Try to include bright colors, which will show up well, rather than a range of light and dark areas (which will both lose detail). Due to their very short focal lengths (the distance between a camera's optical elements and the sensor, again, owing to their small sensors), camera phones excel at shots where nearly all of a scene is in focus. However, this (and their typically weak auto-focus mechanisms) usually precludes focusing on objects very close to the phone, or having a very shallow depth of field to get a blurred background effect (which can, with varying degrees of authenticity, be faked in software later anyway). Mirrors also often end up confusing auto-focus mechanisms. Get outside and get someone to take the photo for you. If you'd rather take the picture yourself, most camera phones have an auto-timer feature so you can set the phone somewhere...

How would you rephrase that briefly using Chinese?
如果你想让照片显得很亮，就应该避免在低光照条件下拍照。 避免明亮的反射和其他“热点”。 不要拍需要局部聚焦的照片。 不要“对镜拍照”或伸直手臂自拍。 让拍摄对象占据大部分镜头，处于显眼位置。 最后，拍下照片。 如果照片拍得不错，就将它存到手机上，然后拷贝到电脑上进行后期处理，做完这些后，你就可以向朋友们展示照片了！