I had this question about darker filters (such as polerizer, red filter, and filters that just mack the frame darker). If you put on a polerizer on your lens your lightmeter makes up for it and makes it look like it like you would. But if you dont have a filter and the seen is just darker than you just have what is there, you cant really make it like the polerizer or other darker filter. So why does the your ttl lightmeter makes up for the darker shade but if the seen is just dark you cant do much about it? Thanks, and it would be great if you could give me as much aswers, if you understand the question, that would be great.