The external control is: Parallel
two ND200 filters stacked together would perform approximately the same as one ND400 Filter
Because of the ample passband and excellent in-band transmission
The MidOpt LP389 Precision Multi-Layer Visible (VIS) + Near-Infrared (IR) Anti-Reflection (AR) Coated Glass Protective Window is optimized for VIS and near-IR (NIR) transmission
The MidOpt SP785 Modified Near-Infrared (IR) Dichroic Block Shortpass Filter passes visible (VIS) and shorter Near-IR (NIR) wavelengths and helps filter NIR light sources
Low-Distortion Lens, 1.7mm, 3MP, 1/2.5in, f/1.8-Close, Day/Night, Ultra-Wide, Manual Iris, CS Mount - Theia SY110M Polarizer Sheet The external control is: ParallelGet expansive, low distortion coverage with precise exposure control. The SY110M pairs Theias Linear Optical Technology with a manual iris to fine tune depth of field and brightness in dynamic lighting. With a 1. 7mm focal length, f 1. 8 Close aperture and 3 megapixel (MP) support, this CS mount lens is a smart fit for day night imaging on 1 2. 5" sensors or smaller.