Reducing your scope aperture size to help increase visibility during heavy mirage

[@14goldmedals]

I just watched F-Class John explain F-Stops and depth of field...thank you for the great tip.

[@FClassJohn]

Glad you liked it and hope it helps.

[@MarcinP2]

I noticed this on camera lenses. Works surprisingly good.

[@rickporter2284]

Years ago, Burris made target scopes with adjustable aperture built-in.

[@D70340]

The average person buying a scope doesn`t like bells and whistles. And years ago, Burris was terrible about explaining what their products were designed to do. I was an old Burris fan for many decades, but Burris is way behind the times, and over priced, today. There are MANY scopes to choose from today. Just make sure its not made in china (vortex - cough cough)

[@julesmartino2214]

Thank you John, for the great info on apertures and website address.

[@dragonflyfab9703]

In telephoto lenses the aperture is located somewhere near the erector assembly. The entrance and exit diameters usually determine the field of view and image circle. But I do understand the reasoning of this video.

[@FClassJohn]

Absolutely and I’m fact I usually put the aperture reduced as far back as possible meaning sometimes I put it right on the scope objective and run two sunshades and find it works better because of what you said.

[@rbrtmllr]

Just a hunch from my photography background, adding black flocking (flattest black) to the back side of those rings will minimize flare and loss of contrast. I haven't looked through a scope to test this, but maybe it's of interest for you to consider.

[@FClassJohn]

Thank you, I appreciate the suggestion.

[@michael-cp8vq]

I recently tried this with cheap green pool foam and was shocked it worked really well the only thing I saw bad was I wanna try playing with the hole size think mine was a little too small and my view while not affected by mirage was darkened a lot so too much light being reduced .but loved the idea you showed so thanks in this video .

[@FClassJohn]

Awesome! Keep playing with other foam until you find the right balance.

[@leoburns9674]

Always a pleasure to review your learnings John! What are the “negatives” given up by “stopping down”? (I.e., less light transmission = darker image? or ?). For PRS shooters where we might engage targets 400=600=800 in a given stage is the effect minimized below “x” distance... say 600? If this worked, I have a set of Tenebraex flip up caps on sun shade... it’s a range gun, caps aren’t needed in the traditional sense... I wonder if I just drilled out the center of the objective cap... up no reduction, but easy to flip down and lock up if needed?

[@FClassJohn]

In reality the biggest negative like I said are just darker images. For F Class that basically means darker target backers, but for PRS it may not has as dramatic an effect since you mainly shooting steel. Best thing to is play with it at home or the range on different days and learn how your eyes and scope see things with or without the reducer on. I find object out one of my windows at various distances and just look at them with or without it. Hope this helps.

[@jmkhenka]

For optimal image sharpness you need to find the optimal "f-number" for the given ammount of light. Cameras can always "step down" ie close the iris more, but rifle scopes are essentialy fixed iris. And combine that with high focal lenght (zoom) you get really shallow depth of field at distance, making it hard to focus on a object. So if you are only shooing daylight, a x40 lens is better then a 56 or larger. The loss of light wont really matter. But this will be just the same really.

[@g.simard854]

Thanks for the information really appreciated

[@dalegaren3515]

Just what I was looking for. Thank you!

[@FClassJohn]

Awesome. Glad it was helpful.

[@glockparaastra]

Thanks. I'll give it a shot

[@FClassJohn]

My pleasure. Hope it helps you as well.

[@tjbabin5894]

Thanks for the tip F-class John !!

[@FClassJohn]

You're welcome. Glad it was something that could help.

[@charlesleeling8649]

I drilled the appropriate size hole in my flip up scope cover so when I need it just flip scope cover down.

[@shannonnunn]

Reducing magnification helps alot I up mag to read wind 😆

[@michaspi]

I wonder if someone makes a teleconverter for rifle scopes. Doubled focal length and halved aperture size.

[@Aereaux]

You could cut some doughnuts of various size apertures (inside diameter) out of medium or high density foam that you could easily swap out depending on conditions. Even rigid foam may work. Start saving that packing material from Amazon.

[@FClassJohn]

Yeah good idea. I may just do that. 👍🏻

[@Aereaux]

@@FClassJohn I have had some success when cutting foam and soft plastic by using a hole saw in a drill BUT running it backwards. Don't have the problem of the teeth grabbing the material. Or use an electric knife.

[@FClassJohn]

@@Aereaux I’ve done the same thing for other projects. Thanks again for the ideas.

[@Aereaux]

@@FClassJohn Even though I am not an F Class competitor (I have a Savage 12 F/TR I use for stress relief shooting) I find it very interesting and informative to watch your videos.

[@FClassJohn]

@@Aereaux Thank you. I'm glad they're enjoyable and helpful.

[@taylorbokshowan5713]

Gonna try it

[@FClassJohn]

Awesome, hope it helps you.

[@MaxairEngineering]

Damn, good info. Got yourself a new sub…..

[@FClassJohn]

Thank you and thank you!

[@MaxairEngineering]

@@FClassJohn this clicked because I use another trick when my glasses are not handy. Just make a small aperture with your thumb and forefinger like an ok 👌 symbol but with a small hole. When you look through the hole, what was blurry will often be much more clear…….

[@SnipeU696]

Thank you.

[@FClassJohn]

Glad it helped.

[@JimWooddell]

John, where is Dan's webpage? Tnks!

[@FClassJohn]

You can reach out to him here [e-mail]. I don't think he's actually doing a website anymore.

[@jonm3688]

Is there still a link for the caps? The one in the description keeps coming up with an error

[@FClassJohn]

Sorry for the trouble. I updated the link, looks like it may have changed since I made the video. Here's the new one for you as well www.kreativ-solutions.com/product-page/mirage-cap

[@howardschwartz1462]

where can i order the aperature reduction rings? thanks.

[@FClassJohn]

This guy makes the best ones and makes them for almost every scope out there. kreativ-solutions.com/

[@howardschwartz1462]

@@FClassJohn thanks

[@howardschwartz1462]

@@FClassJohn I am a newbie and have a match coming up in two weeks. I have 50 rounds of new brass. Do you think I should shoot it and use the fair form brass for the match? I guess what I’m asking is is new form brass as accurate as once fired brass. Thanks again for all your help.

[@howardschwartz1462]

Fireform vs new brass for accuracy

[@richrudley2650]

Where can I get the aperture rings?

[@FClassJohn]

Reach out to [e-mail] and tell them what scope you have. They make rings to fit most popular scopes.

[@texpatriot8462]

Would polarization work?

[@FClassJohn]

Not as likely from my experience but that’s only from wearing polarized sunglasses and never seeing a difference. I guess it’s possible there’s some chance that rotating the polarizing lense to just the right setting could have some effect but I’ve never tried it for fear the recoil and such would cause the polarizing filter to wander.

[@Just_Samson]

Good vid. Please tell your hands to lay off the coffee. 😂😂😂

[@FClassJohn]

Thank you, and I’ll try to keep my hands at bay next time...🤗

[@michaspi]

As soon as you said “photography” it all clicked in my mind. Higher f-stop number means sharper image. There is a practical limit, though. Too small of an aperture and diffraction takes over and ruins fine details. If only we could adjust the ISO and shutter speed of our eyes to compensate 😂

[@FClassJohn]

Yes you're exactly correct. That's why you typically see a pretty standard sized aperture hold when people make them (which is why the one on the Golden Eagle) matches many others.

[@Rico11b]

This is precisely what I HATE HATE HATE large Objective lens. Makes no sense to purchase an expensive scope with a super huge Obj lens and then have to reduce the aperture size down to improve depth of field. I'd much prefer to have a 40 or 44mm Obj lens instead of those stupid 50+mm Obj lens. It's the quality of the glass that makes the biggest difference. Scope makers try to FOOL people with these large Obj lens. A 40mm high quality Ogj lens glass will have a better and brighter image than a low quality 56mm Obj lens. Scope makers fool the consumer into thinking they're getting something better when in fact they aren't. It's the quality of the glass that matter, not the size.

[@ericrumpel3105]

I have been watching some of your videos now & I really think they are down to earth educational, very much more so than this other clown making videos who thinks he knows it all & calls neck sizing & lands chasing stupid,....& the dummy can hardly speak clearly himself.

[@johnsathe2429]

Quit pickling on yourself,, Eric...

[@ericrumpel3105]

@@johnsathe2429 ....lol