11-19-2011, 03:38 PM
[quote name='wim' timestamp='1321716271' post='13036']
Try these:
[url="http://dofmaster.com/dofjs.html"]http://dofmaster.com/dofjs.html[/url]
[url="http://eosdoc.com/jlcalc/"]http://eosdoc.com/jlcalc/[/url]
You will have to take into account that due to the way sensors work, perceived DoF is probably a little less than calculated DoF. At least, that is my opinion. YMMV.
Kind regards, Wim
[/quote]
Brilliant, thanks Wim
85mm, f/1.8 on DX at 6 feet: 5.95 to 6.05 feet. No wonder that was difficult...! <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/tongue.gif' class='bbc_emoticon' alt='
' />
And even at f/4, it's only 5.89 to 6.12 feet... so I hope the camera comes back with the autofocus spot-on...
85mm at f/1.8 gives same DoF as 127mm at f/2.8 (near as dammit): 5.96 to 6.04ft at 6 feet
What's the maths for calculating this? I bet it would make my head hurt..! <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/wink.gif' class='bbc_emoticon' alt='
' />
I also found this, for lens / sensor equivalents: [url="http://www.cambridgeincolour.com/tutorials/digital-camera-sensor-size.htm"]http://www.cambridge...sensor-size.htm[/url]
Ian
Try these:
[url="http://dofmaster.com/dofjs.html"]http://dofmaster.com/dofjs.html[/url]
[url="http://eosdoc.com/jlcalc/"]http://eosdoc.com/jlcalc/[/url]
You will have to take into account that due to the way sensors work, perceived DoF is probably a little less than calculated DoF. At least, that is my opinion. YMMV.
Kind regards, Wim
[/quote]
Brilliant, thanks Wim
85mm, f/1.8 on DX at 6 feet: 5.95 to 6.05 feet. No wonder that was difficult...! <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/tongue.gif' class='bbc_emoticon' alt='
' />And even at f/4, it's only 5.89 to 6.12 feet... so I hope the camera comes back with the autofocus spot-on...
85mm at f/1.8 gives same DoF as 127mm at f/2.8 (near as dammit): 5.96 to 6.04ft at 6 feet
What's the maths for calculating this? I bet it would make my head hurt..! <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/wink.gif' class='bbc_emoticon' alt='
' />I also found this, for lens / sensor equivalents: [url="http://www.cambridgeincolour.com/tutorials/digital-camera-sensor-size.htm"]http://www.cambridge...sensor-size.htm[/url]
Ian