[Accuracy Laboratory] Iris Shutter (Ultra-Simplified Model) Short Type

Iris Shutter (Ultra-Simple Type) Short Type

For shooters with glasses that have a small vertical frame or who aim with their chin slightly tucked.

The target is far away, and the sight is close. The human eye cannot focus on both distant and close objects simultaneously. Therefore, in precision shooting, it is standard practice to focus on the "nearby sight," which is more crucial, while the distant target remains blurred when aiming.

However, there's a cheating device that allows you to focus on both far and near objects: it's called an iris shutter. It's a variable aperture that allows you to increase the depth of field by looking through a small hole when aiming.

When the aperture is made smaller, the image becomes darker, but both distant and close objects appear clear.

It seems like an essential item for shooting, but quite a few top national team shooters don't use it. On the other hand, some shooters do use it. It seems to be a matter of personal preference.

You won't know if it suits you until you try it, but iris shutters sold as shooting equipment are quite expensive to buy just to "give it a try." So, this "ultra-simple type" iris shutter is designed solely to help you determine if an iris shutter is right for you.

It comes with a clip to attach to ordinary glasses.

The size of the aperture is adjusted by operating a lever. The left shows it opened to the maximum, and the right shows it closed almost to the minimum. The hole becomes square, not circular.

A proper iris shutter works by combining more than 10 blades to make a circular hole larger or smaller while keeping it circular. However, with this "ultra-simple type," only two blades (effectively one moving blade) are used to open and close it, so the hole becomes square.

Nevertheless, I actually tried it in shooting, and it adequately performs the role of an "iris shutter." As you narrow the aperture, the blurred target becomes clear. It will sufficiently fulfill its role as a trial product to determine whether an iris shutter is suitable for you or not.

※Depending on your glasses, the lens thickness or other factors may not be compatible. The clip part is made of plastic and rubber, but depending on how it's used, damage to the glasses frame or lenses may occur, so please be careful when attaching and detaching it.