Light Filter usage in the Digital Photography - "Phototips" made4you Home
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Types of light effect filter:
concentric 6-facet prism light filter+Point lens light filter =Napoleon alienated with 6-facet prism and Point lens at Carnival in Basel
6-facet prism
 Point lens

More good usable light filters for alienation effects:

concentric 3-facet prism light filterconcentric 5-facet prism light filterlinear 3-facet prism light filterlinear 3-facet prism light filter 
3-facet prism
5-facet prism
3-facet prism
6-facet prism


The filter effect strongly varies with the displacement of the aperture. Therefore the filter effect can be continuously controled by the depth of field button or if possible by using a working aperture (only for medium-format cameras).
By rotating the filters effect against each other, adjusting the aperture and change the shooting distances arise infinitely many design variations.

Fill-in flashlight - "Fillin"
The photoimage gets purposefully underexposed:
    1-2 aperture steps for medium effect
    3-4 aperture steps for strong effect
The lack of light is then supplied by the flashlight. This must have a TTL metering (Trough The Lens).

The longer the exposure time, the greater is the proportion of the foreign light and the smaller the proportion of the flash light.

Due to the limited range of the flash unit, the flash works mainly on the foreground of the photo. Targeting like that, a mixed light scenario can be generated:
    Hard flashlight in the photo foreground
    Soft natural light on the photo background
Such mixed-light images can mostly be shot at exposure times longer then 1/30 sec without a tripod, since the duration of the flashlight is usually less than 1/10000 sec.
In the flash working range (foreground) ie there is no risk of camera shake.

Tip: Not too much stop down (aperture between f 4 and 8), otherwise the power of the flash unit would not be sufficient.

By "panning" the camera according to a moving foreground subject a motion blur on the photoimage background may be achieved.
Due to the short duration of the flashlight, the foreground subject is sharply drawn and acts in its movement as frozen.
Fearsome Devil during Cortege in front of the Cathedral in Basel
Exposure data for the photoimage above:
Aperture f 8, shutter speed 1/2 sec
Underexposure without fill-in flash is 3 aperture stops
Fill-in flashlight
Film speed ASA 200
Horrible witch mask photographed with fill-in flash at Carnival in Basel