Characteristics Of The Xcd-Sx910Uv - Sony XCD-SX910CR, XCD-SX710CR, XCD-SX910UV, XCD-SX910, XCD-SX710 Technical Manual

Characteristics of the
XCD-SX910UV
Relative Sensitivity
The relative sensitivity of the camera is determined by
the permeability of the optical filter, and the
spectroscopic sensitivity characteristics of the CCD
mounted in the camera. Thus the relative sensitivity of
a camera can be found by looking at the product of the
permeability properties of the optical filter and the
spectroscopic sensitivity characteristics of the CCD.
This time, the optical filter used in the XCD-
SX910UV will allow 200 to 1000 nm wavelength
waves to pass, but for the most part, however, it
doesn't depend on the wavelength, but instead utilizes
a certain permeability ratio. So the relative sensitivity
of the camera is more or less the same as the
spectroscopic sensitivity of the CCD.
When shooting a scene illuminated only by ultraviolet
light, visible light or infrared light shining on the
subject, or entering the camera can have an influence
on the image output. In order to obtain an accurate
image, some sort of screening equipment will be
needed to deal with the visible or the infrared light.
When screening or covering is not possible, to shoot an
image using only ultraviolet light in an environment
where ultraviolet and visible lights are mixed, it is
necessary to change the relative sensitivity response of
the camera. In such a case, in order to suppress the
sensitivity to visible light, a special filter can be used.
This kind of special filter is called an "ultraviolet light
permeable filter." If you set this filter between the
camera and the subject, the sensitivity to ultraviolet
light relative to visible light increases, and you can
create a camera system more responsive to ultraviolet
light.
There are many types of special filters available on the
market. You can use filters to suit the environment and
the shooting conditions, and using just this camera,
configure a camera system that has exactly the relative
sensitivity characteristics you need.
XCD-SX910CR/X710CR
XCD-SX910UV
XCD-SX910/X710
On light sources
This camera is sensitive to ultraviolet light in the 400
nm or less. At the same time, it is sensitive to visible
and infrared light above 400 nm in wavelength. So,
when shooting a subject illuminated only by ultraviolet
light, the visible light or infrared light shining on the
subject or entering the camera, can have an influence
on the image output. In order to obtain an accurate
image, some sort of screening equipment will be
needed to deal with both the visible and the infrared
light.
If you use ultraviolet light as a light source, use light
waves in the appropriate range for the camera
sensitivity. Depending on the amount of light,
wavelengths shorter than 350 nm can have an effect on
the human body. Be especially careful to read the
Operating Instructions to obtain a full understanding of
how to properly use your light source.
In addition, there are safety considerations when using
ultraviolet light, involving light reflected off the
camera and light shining around at random. Be sure to
take all necessary safety precautions when you use
ultraviolet light as a light source.
When you switch back and forth using ultraviolet light
and visible light with the same camera, due to
aberrations in the lens, there may be some differences
in the focus when you use ultraviolet light and when
you use visible light.
On the XCD-SX910UV, the flange-back is 17.526 mm
with ultraviolet light having a wavelength of 300 nm,
as the default.
Appendix
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