1. Test overview.

This test is used for adjusting the sharpness so that it is initially able carry out the four following tests. Then, an precise adjustment will be made to reach the best sharpness result.
For that, the scanner is to scan a target film, and will decide of a sharpness level in the middle of film. The user will be brought to adjust the principal lens to increase the sharpness level.
If the sharpness is insufficient at this stage, the four following tests will not not work :

2. Test conditions.

This test relates to the APS film carrier inserted in the scanner.
The APS film carrier must be inserted in the scanner to carry out this test.
Film APS Colour Target Film must be used for this test (ref. 070 100 416A):
The acceptance of the test is automatic.
No parameter is saved.

3. Pre-requirements.

• The position of the 2 high and low screws of the film carrier must be adjusted in a way identical to that of the 135 Film carrier.

4. Test realisation.

Click on RUN to execute the test. A message will come up asking to insert the APS Colour target film. When the film is inserted, click on OK.
Note : The Colour target film consists of :

• First exposure on which values are hand written, in particular the sharpness value to be reached for this film.
• Second virgin exposure on which the scanner will calculate the sharpness level.
• Other exposures identical to the first but not used.

The scanner will scan the first and the second exposure of film then will display an image mixing :

• part of the second image where the calculation of the sharpness level was made.
• part of the first image where the sharpness level seen needs to be reached.

The calculated sharpness level is displayed at the top in box MIDDLE .In box MIN to reach enter the value written down on the film (about 30, according to films).
Note : the value of sharpness can vary from one scanning to another, sometimes of 4 or 5 points. It is due to the fact that a film is never scanned exactly at the same place.
On the right part of the window, a history of the positions of the screws of the film carrier allows to remember in which position you are in. Thus click on the position in progress (by 1/8 of turn).

5. Test acceptance.

The test is accepted if the level of sharpness (MIDDLE) is higher than 75% of value MIN TO REACH.

6. Other affected tests.

If the sharpness is not sufficient at this stage, the four following tests will not be completed :

• APS Pre-Scan IR.
• APS Cal Offset LED-CCD.
• APS Offset Perforation.
• APS Cal RGB-IR.

7. Trouble shooting.

If The test is rejected with the message " Middle sharp incorrect " : this means that the calculated sharpness level is not sufficient (thus that the scanner is not sufficiently sharp). Withdraw the film carrier and adjust the the high and low screws of the film carrier.(Caution : When you screw the top, unscrew the bottom and vice versa). Restart the test and start again until the test is accepted.

If The test is rejected with the message "Nil value for sharp max " : this means that the sharpness value to be reached (Min to reach) was not indicated (it remained to 0). Start again the test and enter the value Min to reach;