With this program it is possible to view and combine different characteristics of filters.

The package consists of :

1. •xfilter.exe : the program
   

2. •*.flt : a number of filter data files
   

3. •small.lx5 : font file
   
   
   

Put these files on a directory and start xfilter.exe

1. •The 3 upper buttons are 'light sources'. When you activate one of them, you will get the characteristics of that source ( mercury vapour lamp, low pressure sodium lamp and high pressure sodium lamp ). The 3 sources can be combined as well : in that case the characteristics are added.
   

2. •The buttons in the middle are filters : there are a number of Wratten gelatine filters as well as a number of well known Lumicon and Idas filters. These filters can be combined as well. When you activate 1 filter, with all other buttons 'off', the characteristic curve of that filter is displayed. When a source is activated ( on top ) + a filter, you can see what this filter does with the light of that source. Different filters can be combined. In that case, the characteristics are multiplied.
   

3. •De 3 buttons at the bottom are 'receptors'. They have some characteristics as well: rods ( the eye at night ), cones ( the eye in daylight or with sufficient light ), and the typical characteristic of a CCD camera ( in this case the Starlight Express MX716 ).
   When 1 of the receptors is activated ( with all other buttons 'off' ) , you will see the characteristics of that receptor.
   If you activate 1 receptor along with a source, you can see for which wave length the receptor is most sensitive.
   

The Xfilter package can be downloaded FREE OF CHARGE

Proceed as follows:

1. •Download the zip file.
   

2. •Make a directory on your computer and unpack the zip file there.
   

3. •That's all folks! The program itself is called 'xfilter.exe'. User instructions : see readme.txt
   
   

Click here to download the latest version! Enjoy!

Xfilter was written by Patrick Mergan.

About x-filter

Downloading x-filter