This App calculates the bokeh diameter made by a pin-pointed illuminat before you actually take photos such as portrait or macro photos.

It is just for predicting relative bokeh diameter, not for editing your photos.


Bokeh phenomenon occurs on objects which is out of focus. But, calculation of the bokeh size is complicated.

Simply thinking, cameramen actually want to know relative bokeh diameter to the main object. For example, is bokeh as big as the model's ear? This App tells you that !

The sensor format nor print size never influences that.

Why don't you get fine photos with highly controlled bokeh, using this app?

It is also useful when you select lenses.

Visit "App Support" site to learn more.
Or follow us on @SlideCalcL on Twitter for contact.
We want to hear from you. Please rate this App.


----- BASIC USAGE -----

-- Input value after touching one of four parameters as follows:
.......1...Focal length of your lens
.......2...F value of the aperture
.......3...Object distance from the sensor
.......4...Illuminat distance from the sensor

-- The bokeh diameter is shown at the center of the screen.

-- Image of bokeh is displayed at the upper side.

-- If you decide relative diameter of a circle of confusion, you can find the depth of field, DOF.


----- CAUTION -----

-- Please input a true focal length, not a 35mm-corresponding value.

-- Notice that actual specs of your lens are not exactly the same as catalog specs.