>>4391760>They turn on and are ready to shoot pretty much instantlyThey are quicker, but even my 7 year old body is on by the time I get my eye to the viewfinder
>>4391764An EVF is better in low light conditions, shows you the actual depth of field you will get, shows you exactly how focused your image is, allows you to zoom in for manual focusing, gives you a preview of the exposure, and allows you to have more information in the viewfinder such as things like a histogram. An optical finder doesn't use any power and that's about it.