If u r thinking of using the zoom guage on the EVF....no, the best is a rough estimate based on the postion on that vertical bar. However, after taking a pix, you can see the EXIF info using a browser software.
You can use a software called Thumber to extract data (ISO, shutter, aperture, focal length, etc.) of your photos taken with a digital camera. Thumber can be downloaded from: http://www.tawbaware.com/thumber.htm