Description
Rifle Scope Product Details
DJym HD Blue Film Without Magnification, Inner Red Dot Sight with Red Professional Shockproof Waterproof Anti-Fog Sight
Model: HD30D3
Magnification: 1 time
Weight: 305g
Length: 130mm
Objective lens diameter: 30mm
Adjustment method: built-in adjustment
Differentiation line: single point
Differentiation material: wire
Coating method: blue film
Earthquake resistance or not: yes
Nitrogen filling or not / waterproof and anti-fog: yes
Type: Red
Maximum output power: less than 5mw
Wavelength: 625-660nm
Length: 58mm
Weight: 38.8g
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Rifle Scope Product Features
100% brand new Excellent product quality.
Easy to install quickly and quickly.
Take a red aiming to help you aim faster.
High-definition vision, allowing you to observe the field of vision more clearly, to a certain extent reduce the fatigue of long-term observation.
Quality assurance, our products are CE and RoHS certified, if you have any questions, we will reply you within 24 hours
About the DJym Company
DJym is a premium maker for weapon scopes, optics, mounting solutions, and other add-ons used for firearms like rifles and long guns. They innovate and make their mounts and related products by making the most of materials which are long lasting and resilient. This includes the DJym HD Blue Film Without Magnification, Inner Red Dot Sight with Red Professional Shockproof Waterproof Anti-Fog Sight by DJym. For more shooting goods, visit their site.
Info About Optics
Rifle scopes enable you to exactly aim a rifle at different targets by aligning your eye with the target over a range. They do this through zoom by making use of a set of lenses inside the scope. The scope’s alignment can be dialed in to take into account various environmental things like wind and elevation decreases to account for bullet drop.
The scope’s function is to understand exactly where the bullet will land based on the sight picture you are seeing through the optic as you align the scope’s crosshair or reticle with the target. Many contemporary rifle scopes have about eleven parts which are located within and externally on the scope body. These parts include the rifle scope’s body, lenses, windage dials or turrets, objective focus rings, and other parts. See all eleven parts of an optic.
Rifle Scope Types
Rifle scopes can be either “first focal plane” or “second focal plane” style of scopes. The kind of focal plane a scope has determines where the reticle or crosshair lies relative to the scopes zoom. It simply suggests the reticle is situated behind or before the magnification lens of the scope. Looking for the most desired form of rifle optic is based on what type of hunting or shooting you plan on doing.
Info About First Focal Plane Scopes
Focal plane scopes (FFP) include the reticle in front of the zoom lens. These kinds of scopes are useful for:
- Quick acquisition, long distance kinds of shooting
- Shooting situations where estimations are small
- Experienced shooters who have an idea for their target “hold over” and also “lead” relationships for their firearms
- Shooters who do not mind the reticle is bigger and requires more visual eyesight room than a SFP reticle
Second Focal Plane Optics
Second focal plane optics (SFP) include the reticle to the rear of the magnification lens. This causes the reticle to stay at the exact same overall size relative to the level of magnification being used. The final result is that the reticle dimensions adapt based on the magnification applied to shoot over greater distances due to the fact that the markings present distinct increments which vary with the magnification level. In the FFP example with the SFP glass, the 5x “zoom” 100 yard tick would be 1/5th of the non “zoom” tick. These styles of optics are beneficial for:
- Far away styles of shooting where shooters have extra time to make ballistic calculations
- Shooting where most of the shots occur within much shorter ranges and distances
- Shooters who would like a clearer optic picture without space taken up by the bigger FFP reticle
Magnification for Rifle Optics
The measure of scope zoom you need on your optic is based on the type of shooting you would like to do. Virtually every style of rifle glass offers some degree of magnification. The quantity of zoom a scope delivers is determined by the diameter, density, and curves of the lenses within the rifle scope. The zoom of the scope is the “power” of the scope. This indicates what the shooter is checking out through the scope is magnified times the power element of what can generally be seen by human eyes.
Fixed Power Lens Glass Details
A single power rifle scope or optic will have a magnification number designator like 4×32. This indicates the magnification power of the scope is 4x power while the objective lens is 32mm. The zoom of this type of scope can not adjust considering that it is a set power scope.
Info About Adjustable Power Lens Rifle Optics
Variable power rifle scopes use enhanced power. The power modification is achieved by the power ring part of the scope near the rear of the scope by the eye bell.
Glass Power and Range Correlation
Here are some advised scope power settings and the ranges where they may be successfully used. Highly magnified glass will not be as efficient as lower powered scopes since too much magnification can be a bad thing. The same goes for extended distances where the shooter needs enough power to see where to properly aim the rifle at the target.
Rifle Optic Lens Finishing
All contemporary rifle glass lenses are coated. Lens finish is a crucial aspect of a rifle system when looking into high end rifle optics and scope systems.
Details on Lens Coatings – HD Versus ED
Some glass companies even use “HD” or high-def lens coverings which take advantage of various processes, components, polarizations, and chemicals to enhance various color ranges and viewable target visibility through the lens. This HD covering is normally used with increased density lens glass which reduces light’s ability to refract through the lens glass. Some scope suppliers use “HD” to refer to “ED” signifying extra-low dispersion glass. ED handles how colors are presented on the chromatic spectrum and the chromatic aberration or deviance which is also called color distortion or fringing. Chromatic aberration is often obvious around objects with well defined shapes as light hits the object from certain angles.
Glass Lens Single Finish Versus Multi-Coating
Different optic lenses can likewise have different finishings used to them. All lenses usually have at least some type of treatment or finishing used to them before being used in a rifle scope or optic.
Single layered lenses have a treatment applied to them which is typically a protective and improving multi-purpose treatment. This lens treatment can shield the lens from scratches while reducing 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 manufacturer and the amount you spent on it. The scope’s maker and cost are indications of the lens quality.
Some scope producers similarly make it a point to specify if their optic lenses are coated or “multi” coated. Being “much better” depends on the producer’s lens treatment innovation and the quality of products used in building the rifle scope.
Anti-water Rifle Optic Lens Coating
Water on a lens does not assist with preserving a clear sight picture through a scope at all. Lots of top of the line and military grade scope makers will coat their lenses with a hydrophobic or hydrophilic covering.
Rifle Optic Installing Alternatives
Installing approaches for scopes come in a few options. There are the standard scope rings which are individually mounted to the optic and one-piece scope mounts which cradle the scope. These different types of mounts also generally are made in quick release variations which use toss levers which permit rifle operators to quickly install and remove the scope.
Hex Key Rifle Scope Rings
Standard, clamp type mounting scope rings use hex head screws to fix to the flattop style Picatinny scope mount rails on the tops of rifles. These styles of scope mounts use two separate rings to support the optic, and are normally made from 7075 T6 billet aluminum or similar materials which are developed for far away precision shooting. This form of scope mount is exceptional for rifles which need a long lasting, unfailing mount which will not shift no matter how much the scope is moved or abuse the rifle takes. These are the design of mounts you want for a faithful scope setup on a reach out and touch someone scouting or tournament firearm which will hardly ever need to be modified or recalibrated. Blue 242 Loctite threadlocker can also be used on the scope mount screws to keep the hex screws from backing out after they are installed tightly in position. An example of these rings are the 30mm type made by Vortex Optics. The set generally costs around $200 USD
Quick-Release Cantilever Rifle Glass Rings
These kinds of quick-release rifle scope mounts can be used to quickly detach a scope from a rifle and reattach it to a different rifle. If they all use a similar design mount, several scopes can often be switched on the range. The quick detach design is CNC crafted from anodized 6061 T6 aluminum and the mounting levers connect nicely to a flat top style Picatinny rail. This lets the scope to be sighted in while on the rifle, removed from the rifle, and remounted back on the rifle while preserving the original sighting settings. These types of mounts come in convenient for shooting platforms which are transported a lot, to take off the scope glass from the rifle for protection, or for sight systems which are chosen for use in between multiple rifles. An example of this mount style is the 30mm mount designed by Vortex Optics. It usually costs around $250 USD
Details on Glass Tube Sealing and Gas Purging
Wetness inside your rifle glass can mess up a day on the range and your highly-priced optic by inducing fogging and producing residue within the scope’s tube. A lot of optics prevent humidity from going into the scope tube with a series of sealing O-rings which are water resistant. Normally, these water-resistant optics can be immersed 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 common use rifles for hunting and sporting purposes, unless you intend on taking your rifle on a boat and are worried about the scope still performing if it is submerged in water and you can still find the gun.
Gas Purged Rifle Scope Tubes
Another element of avoiding the buildup of wetness within the rifle scope’s tube is filling the tube with a gas like nitrogen. Given that this area is already taken up by the gas, the glass is less affected by temp alterations and pressure distinctions from the outdoor environment which might potentially enable water vapor to leak in around the seals to fill the vacuum which would otherwise be there. These are good qualities of a decent rifle scope to look for.
