Main Parameters 54
reduced. Highlight clipping itself is not influenced by this, but the shoulder of the gamma curve will get
slightly steeper, reducing the smoothness of the change from almost overexposed to overexposed. At
high exposure indexes, such as 1600 ASA, the images behave in the opposite way. Noise is increased,
which makes it important to judge shadow detail, while there will be even more headroom in the
highlights.
Setting the Exposure Index
1. Select HOME > EI.
2. Set the desired exposure index.
14.5 ND Filter
Internal FSND Filters
The ALEXA Mini LF has a built-in motorized and sealed filter stage for Full Spectrum Neutral Density
filters (FSND) with densities of 0.6, 1.2 and 1.8 (and an optical clear filter). In comparison to IRND
filters, which have an uneven spectral behavior, or to an ordinary ND filter, which opens up at about 675
nm, the FSND filters offer a true, even reduction over the whole spectrum. This prevents artifacts from
infrared wavelengths and the need for additional IR filters.
ALEXA Mini LF uses FSND (Full Spectrum Neutral Density) filters, which are linear across the full
spectrum of the camera sensor. This prevents artifacts from infrared wavelengths and the need for
additional IR filters.
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