Скачать или смотреть Panasonic Bridge Camera Crop Factor & Aspect Ratios - Fact or Fiction?

From panasonic technical specification the inference is that effective 35mm focal length changes with aspect ratio. For example on the FZ300 is show 25 to 600mm at 4:3 but 30 to 720mm on 1:1. based upon some very loose wording given by CIPA to camera manufacturers about specifying focal lengths I believe Panasonic are misleading potential customers into thinking that this camera will provide 720mm optical focal length by selecting the 1:1 crop. In this video I examine exactly what crop factor is, how aspect ratio doesn't affect lens angle of view, effective focal length or image perspective change. I show this mathematically and with some practical illustrations to validate the theory.

My Photoblog containing more Panasonic Bridge camera information http://www.grahamhoughton.com/