Night Vision Gain Control DEMO w/ Iris Test (PVS-14)
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- เผยแพร่เมื่อ 19 ต.ค. 2024
- #NightVision
Enjoy a discussion about night vision gain control, alternatives, and more! This video features some philosophy-of-use, as well as live demonstrations! Here, we will see through my PVS-14 in a very dark environment, as well as a highly lit one.
An additional benefit of using the iris is that the more you close it the more of the pinhole effect occurs. This will put more objects at closer/further distances in focus without having to mess with the focus ring.
Very cool video I had also noticed the same effect when using the iris on my thin filmed WP pvs-14
Turn the gain up but shutter the iris and it had the same effect
Noise on the image increased more with thw gain up and the iris shuttered vs having the gain dialed and having the iris wide open.
I was intrigued by Tanto but decided against it due to lack of manual gain. I understand the iris doesnt replace gain control but this is an acceptable containment for modules that don't have manual gain control.
What would you say is the downside of using iris? it seems to be a bit more noisy because the module is working harder to create an image.
very nice video, full of valuable information. If I got your impressions right, manual gain is very nice feature but IRIS can replace it to some degree. Actually, footage seems to be very similar comparing IRIS and gain control, so I wonder if you see any big advantage into gain control. Because if IRIS provides almost the same results, then I don't really need to care about gain-control when looking for new device. IRIS is great addition in any case and it's not expensive.
Manual gain: Manually adjusting the brightness of your night vision device
Adjustable Iris: Manually adjusting the depth of field of your night vision device. Night vision lenses use F1.2 aperture. Apertures can range from F1.2-F22. The lower the number, the more lights can enter the lens. However, this comes with downside. It focus on small area and what ever is not in focus becomes blurry. Hence why when you focus your night vision device at stars, your hands look blurry. Adjustable Iris allows your night vision lens to go above F1.2 by opening or closing the iris. When your aperture increases, the amount of light that can enter your lens decreases but your focus area increases. So you can look at the stars and have your hands in focus at the same time.
I just got a PVS 14 and when I purchased it didn’t even consider if it had manual gain or not. Fortunately it did and it’s one of my favorite features. I do have an iris on order more so for the near focus advantages plus it’ll function as my day cap in the event I forget to turn the unit off and remove the battery.
Beware of this the pinhole in the iris will still let a pinhole of bright sunlight through onto the front lens of the PVS14
Use the daylight cap and screw the iris on at night
It looks like the image quality goes down a lot when you close the lens with the iris?
I'm torn between getting a pvs 14 or tanto because of this fact. Tanto is a clear winner on weight and for bridging, but I wish the tanto had a small manual gain knob!
Get the pvs14. Dont worry about weight. For real, bud.
You'll be extremely happy with a pvs14 trust me
I would recommend the 14 man, manual gain is so nice