Preparing Your Camera to Programming of Dandelion

1. Set the camera to MF (manual focus) mode
2. Set exposure mode A
3. Set EV STEP (exposure value step) to 1/3 EV
4. Set the Fn function button to PREVIEW mode (Depth of Field preview).

For step 4 browse your camera's instruction manual: depending on the model, Fn button can be located in a different place and may be customized in a different way.

In Olympus E-300 OK button can be customized to perform PREVIEW function.
In Olympus E-330 there is a special button for customizing the PREVIEW function

In Olympus E-400 a round Fn button is located near the controller.

In Olympus E-410 "<" button (left arrow) functions as Fn button.

The same for Olympus E-420.

In Olympus E-500 a One-touch WB button is used.

In Olympus E-510 there is a special Fn button.

The same for Olympus E-520.


Please read the instruction manual for your camera attentively. It is stated very clearly on how to customize these buttons.


In Olympus E-1 and E-3 the PREVIEW function is performed by a standard button near the lens. It doesn't have to be customized.

LENS RESET function is performed by Lens release button.

In Panasonic DMC-L1/L10 there is no such function as depth of field preview. That's why in order to activate program mode you will have to make one long exposure in M mode. For command and data input you will have to make shots with short exposure in automatic exposure mode (A mode). After Dandelion performs the command, instead of displaying aperture sign "-.-" the camera will offer to reboot. In this case you will not need the lens reset function.

You can do the same with Olympus cameras, that is instead of pressing the PREVIEW button you can make shots.

Programming of Dandelion for Olympus and Panasonic