DOF query

[mediyoga]

Over what level of zoom do we start losing depth of field? I mean given a particular scene- like my previous post of the yellow/ white flower?what is the cut off point?
thanks

[forno]

gOOGLE "DEPTH OF FIELD CALCULATOR"

there are a few out there and they will tell you based on Ap distance from oject and focal lenght

[mediyoga]

Thanks Forno.
I found a very useful link online dof calculator
http://www.silverlight.co.uk/resources/dof_calc.html

I found that at a distance of say 10 ft from the subject f8 and 300 mm ( as in my white/ yellow flower post)

gives a dof of only 0 ft and 2 inches!!!
no wonder that the dof was horrible!
so the best option is to go closer and not zoom when possible

[Bluedog]

Move in closer and zoom out wider to maybe increase DOF

Thats the quote I made in your original thread ... ;)

[mediyoga]

Yes Blue you are right- thanks will post again today

[24Peter]

gives a dof of only 0 ft and 2 inches!!!
no wonder that the dof was horrible!
so the best option is to go closer and not zoom when possible

Krishna - shallow DOF is often a very nice effect too. Helps isolate the subject of your image, even if it's just a stamen or two.
"Is that your stamen? Or are you just happy to see me." :D

[Bluedog]

The shallow DOF as Peter states is quite often the preferred method of use in isolating the subject with detail.

[JMWallace]

On that DoF calulator...what format are you inputting?? 35mm or APS??

[mediyoga]

on the calculator, I inputed my camera settings----what ever zoom, aperture I used into the APS area-------
Blue I agree and love the isolation of shallow DOF
Its just that I wanted deep dof on that and forgt and zoomed all the way in!