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Telecamera 2-4-5MPX AHD TVI CVI CVBS 2.8-12mm IR 60 metri IP67RICEVITORE RADIO 2 CANALI PROGRAMMABILI

Obiettivo IR ZOOM LENS 3.5-8mm DC F=1.1

DE150 Obiettivo IR ZOOM LENS 3.5-8mm DC F=1.1


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Vari-focal lens, IR corrected for day/night cameras.

The purpose of an IR corrected lens is to compensate for the focus shift that results from the different wavelengths of visible and IR light (the compensate of the chromatic aberration). Using a combination of aspherical elements, special coatings, and extraordinary low-dispersion glass (ED), IR corrected lenses focus light energy on the same plane (or, at least, closer to the same plane than with ordinary lenses). The result is better focus, sharper contrast and better overall image quality.

SPECIFICATIONS

Focal length:

3.5 - 8 mm

Aperture:

F 1.1

Auto Iris:

DC

Zoom:

Manual

View angle for 1/3" sensor:

69° - 33°

IR corrected lens:

Yes




The pictures below compare the effects of using standard lenses (without IR correction) and IR corrected lenses.








 








Ultimo Aggiornamento: lunedì, 23 luglio 2018 00:03

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