Description
Rifle Scope Product Details
DJym 4X25 Sight, Universal Sight Hunting Rifle Scope, Waterproof, Anti-Fog and Shockproof
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Model: 4X25M6
Magnification: 4 times
Weight: 424g
Length: 168mm
Illumination: 5 gear (red-green lighting)
Objective Diameter: 25mm
Adjustment: ordinary hand tune
Adjustment: 100 yards @ 1/4 inches
Differentiation line: 24 mil dot
Differentiation Material: wire
Coating method: antireflection green film
Earthquake: Yes
Moderate Adjustable: Yes
Nitrogen, waterproof, anti-fog: Yes
Battery: 1 CR2032
Laser type: red
Maximum output: less than 5mw
Wavelength: 625-660nm
Length: 73mm
Battery: 3 AG13
DJym:
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Rifle Scope Product Features
4X magnification, 25mm objective lens diameter.
antireflection green film, so that clear vision, seismic, nitrogen, water, fog.
5 stalls red illumination, green light illumination range 5.
100% brand new, excellent product quality, strong shock resistance, and very stable installation.
quality assurance, our products have been CE and RoHS certified, if you have any questions, we will respond to you within 24 hours
About the DJym Brand
DJym is a premium maker for long gun scopes, optics, mounts, and other accessories used for guns like rifles and long guns. They innovate and build their scopes and related products making the most of materials which are resilient and long lasting. This includes the DJym 4X25 Sight, Universal Sight Hunting Rifle Scope, Waterproof, Anti-Fog and Shockproof by DJym. For additional shooting products, visit their site.
What You Need to Know About Glass
Rifle scopes permit you to exactly align a rifle at various targets by aligning your eye with the target over a distance. They accomplish this through magnifying the target by employing a set of lenses inside the scope. The scope’s alignment can be adapted for consideration of many natural aspects like wind and elevation increases to make up for bullet drop.
The scope’s purpose is to help the shooter understand exactly where the bullet will land based upon the sight picture you are viewing with the scope as you line up the scope’s crosshair or reticle with the intended target. A lot of modern-day rifle scopes have around eleven parts which are found internally and externally on the scope. These optic pieces consist of the rifle scope’s body, lenses, adjustment dials, objective focus rings, and other components. See all eleven parts of an optic.
Rifle Scope Varieties
Rifle scopes can be either “first focal plane” or “second focal plane” type of scopes. The kind of focal plane a scope has establishes where the reticle or crosshair is located in regard to the optic’s zoom. It literally suggests the reticle is located behind or ahead of the magnification lens of the scope. Choosing the most reliable sort of rifle scope is dependent on what variety of shooting you anticipate doing.
About First Focal Plane Scopes
Focal plane scopes (FFP) feature the reticle in front of the magnification lens. This induces the reticle to increase in size based on the extent of magnification being used. The result is that the reticle measurements are the same at the magnified distance as they are at the non magnified distance. For example, one tick on a mil-dot reticle at one hundred yards without having “zoom” is still the same tick at one hundred yards using 5x “zoom”. These kinds of scopes work for:
- Quick acquisition, far away types of shooting
- Shooting circumstances where calculations are small
- Experienced shooters who recognize their aim point “hold over” and “lead” relationships for their rifles
- Shooters who don’t mind the reticle is bigger and uses up more visual eyesight area than a SFP reticle
Second Focal Plane Optics
Second focal plane optics (SFP) include the reticle to the rear of the zoom lens. In the FFP example with the SFP scope, the 5x “zoom” one hundred yard tick measurement would be 1/5th of the non “zoom” tick measurement.
- Long distance forms of shooting where shooters have increased time to make ballistic estimations
- Shooting where most of the shots happen within much shorter ranges and spaces
- Shooters who choose a clearer optic picture without space used up by the larger sized FFP reticle
Rifle Optic Zoom
The measure of scope magnification you need on your glass depends upon the kind of shooting you like to do. Nearly every style of rifle scope offers some degree of magnification. The level of magnification a scope delivers is identified by the size, density, and curvatures of the lens glass inside of the rifle scope. The zoom of the optic is the “power” of the scope. This suggests what the shooter is checking out through the scope is amplified times the power element of what can generally be seen by human eyes.
Fixed Power Lens Optics
A single power rifle scope comes with a zoom number designator like 4×32. This indicates the zoom power of the scope is 4x power while the objective lens is 32mm. The magnification of this kind of scope can not adjust considering that it is a fixed power scope.
Variable Power Lens Optic Info
Variable power rifle scopes can be tweaked between magnified settings. The power change is performed by the power ring part of the scope near the back of the scope by the eye bell.
Rifle Glass Power and Ranges
Here are some recommended scope powers and the distances where they could be successfully used. Consider that high power glass will not be as effective as lower magnification level scope and optics since increased magnification can be a bad thing. The same concept goes for longer ranges where the shooter needs to have adequate power to see exactly where to best aim the rifle at the target.
About Rifle Optic Lens Coatings
All modern rifle optic and scope lenses are coated. There are different types and qualities of glass lens finishes. Lens coating is a crucial aspect of a rifle’s setup when thinking of high-end rifle optics and targeting equipment. The lenses are among the most significant components of the glass due to the fact that they are what your eye looks through while sighting a rifle in on the point of impact. The finishing on the lenses safeguards the lens surface and even assists with anti glare from refracted direct sunlight and color recognition.
About Rifle Scope Lens Coatings – HD Versus ED
Some glass manufacturers additionally use “HD” or high-def lense finishes that take advantage of different procedures, chemicals, aspects, and polarizations to extract a wide range of color ranges and viewable target visibility through the lens. This HD coating is typically used with more costly, high density lens glass which drops light’s potential to refract by means of the lens glass. Some scope vendors use “HD” to describe “ED” meaning extra-low dispersion glass. ED deals with how colors are represented on the chroma spectrum and the chromatic aberration or difference which is also called color distortion or fringing. Chromatic aberration may be obvious over items with hard edges and shapes as light hits the item from particular angles.
Details on Single Coating Versus Multi-Coating
Various optic lenses can even have various finishes applied to them. All lenses typically have at least some type of treatment or finish applied to them before being used in a rifle scope or optic. This is due to the fact that the lens isn’t just a raw piece of glass. It is part of the carefully tuned optic. It must have a finish placed on it so that the lens will be optimally functional in many kinds of environments, degrees of light (full light VS shade), and other shooting conditions.
Single covered lenses have a treatment applied to them which is usually a protective and improving multi-purpose treatment. This lens treatment can shield the lens from scratches while lowering glare and other less useful things experienced in the shooting environment while sighting in with the scope. The quality of a single coated lens depends on the scope designer and how much money you spent on it. The scope’s maker and cost are indicators of the lens quality.
Some scope producers also make it a point to specify if their optic lenses are covered or “multi” covered. This suggests the lens has had numerous treatments applied to the surfaces of the glass. If a lens receives numerous treatments, it can establish that a manufacturer is taking several actions to combat different natural aspects like an anti-glare covering, a scratch resistant anti-abrasion covering, followed by a hydrophilic covering. This additionally does not always suggest the multi-coated lens will perform much better than a single coated lens. Being “much better” depends upon the maker’s lens treatment technology and the quality of components used in creating the rifle glass.
Anti-water Rifle Scope Lens Finish
Water on a lens doesn’t assist with keeping a clear sight picture through a scope at all. Many top of the line and military grade scope makers will coat their lenses with a hydrophilic or hydrophobic coating.
Scope Installing Options
Mounting approaches for scopes are available in a couple of choices. There are the standard scope rings which are individually installed to the scope and one-piece scope mounts which cradle the scope. These different kinds of mounts also typically come in quick release variations which use manual levers which permit rifle operators to quickly mount and remove the scopes.
Hex Key Rifle Glass Rings
Normal, clamp style mounting scope rings use hex head screws to mount to the flattop design Picatinny scope installation rails on rifles. These types of scope mounts use two different rings to support the optic, and are made from 7075 T6 billet aluminum which is designed for long distance precision shooting. This type of scope install is great for rifles which need a resilient, rock solid mounting solution which will not move no matter how much the scope is moved or abuse the rifle takes.
Rifle Optic Mounts with Quick-Release Cantilever Rings
These kinds of quick-release rifle scope mounts can be used to quickly take off a scope from a rifle and reattach it to a different rifle. Multiple scopes can also be swapped out if they all use a complementary style mount. The quick detach design is CNC crafted from anodized 6061 T6 aluminum and the mounting levers connect tightly to a flat top type Picatinny rail. This lets the scope to be sighted in while on the rifle, taken off of the rifle, and remounted back on the rifle while keeping accuracy. These types of mounts come in convenient for shooting platforms which are transported a lot, to take off the scope from the rifle for protection, or for scopes which are employed in between multiple rifles. An example of this mount style is the 30mm mount designed by the Vortex Optics manufacturer. It generally costs around $250 USD
Optic Tube Sealing and Gas Purging
Moisture inside your rifle optic can destroy a day of shooting and your expensive optic by resulting in fogging and making residue inside of the scope’s tube. A lot of scopes prevent humidity from entering the optical tube with a system of sealing O-rings which are waterproof. Typically, these scopes can be submerged beneath 20 or 30 feet of water before the water pressure can push moisture past the O-rings. This should be more than enough wetness avoidance for basic use rifles, unless you anticipate taking your rifle on boats and are concerned about the optic still functioning if it goes overboard and you can still find the gun.
Gas Purged Scope Tubes
Another element of preventing the buildup of wetness within the rifle scope tube is filling the tube with a gas like nitrogen. Given that this area is already taken up by the gas, the optic is less influenced by temp alterations and pressure distinctions from the outdoor environment which might possibly allow water vapor to permeate in around the seals to fill the vacuum which would otherwise exist. These are good qualities of a good rifle scope to seek out.
