Why Depth Of Field Calculator is Wrong HD

in general depth of field is calculated by lens focal length and focal distance. and aperture. But there is also an additional factor called Circle of Confusion, which DOFmaster http://www.dofmaster.com/dofjs.html writes them down due to sensor size which is not entirely accurate. a fantastic explanation can be found by this guy https://youtu.be/Pdq65lEYFOM who if you look closely it is clear that it is the sensor resolution that affects COC and also viewing distance rather than focal length My Top Recommended Camera Gear -, http://astore.amazon.co.uk/dombowerphoto-21 I have 2 other Channels My Exercise channel https://www.youtube.com/user/dombower and my DomTalks channel https://www.youtube.com/user/Domtalks1 My Book: Getting There With Photography http://www.blurb.com/bookstore/detail/2215491 E-Book version http://store.blurb.co.uk/ebooks/68909-getting-there-with-photography FACEBOOK PAGE https://www.facebook.com/pages/Dom-Bower-Photography-FanPage/230715393672355 TWITTER page http://twitter.com/DomBowerPhoto WEBSITE http://www.dombower.com PHOTOGRAPHY CLOTHING Point and destroy clothing http://www.zazzle.com/sportinwaves For my A-Z of Weightloss Tips check out:http://dombowerexercise.blogspot.co.uk/2012/08/a-z-weight-loss-tips.html