well howdy guys and gals welcome back to the social regressive and park eight in our optics
series now might be a great time to go freshen up take a shower get some fresh social regressive
yakity snacks remind your family that you exist and then meet me back out here look i actually
got a haircut and i changed my clothes how's that well today we're going to be talking about just
one individual lens that's our topic for today but it's one very important individual lens
that is the objective lens that we have out on this end of the scope this is where light
first comes into the scope and this kind of sets the tone for everything that's going to
go on back through here yes the lenses on the inside of this scope can let us down
we might have a beautiful image coming in through that first lens and everything goes bad
but usually it's kind of the other way around usually we are zooming in really close and taking
a great look at something that's a little bit mushy out on this end so we want this lens to
be as high quality as we can and we also want it to be very well matched for what we're doing
this lens has some effects that you really need to know about before you pick your ultimate scope
so yeah this is the us optics ts20x this has a zoom range of two and a half up to 20. so
that is quite a zoom range that's very large and this is one that has essentially the same sort of
power at max at 20x as we get into with some of these varmint scopes like these up here these are
a 25 and a 24. that's plenty of power with this 20x to be able to see some very small tahr gets
at some pretty long distances and this scope can handle them quite well partly because of how they
have this set up up here today's discussion is largely going to be about something that we call
exit pupil i'm going to put a formula down below for how do calculate what your exit pupil is
but what this is related to it you take your objective diameter and then you plug it into the
formula here along with what your magnification is and remember that this is a multi-magnification
one we can actually zoom in and out but i'm going to pick whichever one i want i'll go for that 20x
and we're going to see what the exit pupil is going to be on the other end and i should mention
that a gigantic exit pupil isn't necessarily going to help you there is a certain range that's going
to work for your eye it's going to try to match up to the actual size of your pupil in your eye and
not all of us have the same ability to stretch and shrink these apparently as we get older we lose
the ability to dilate the eyeball completely so some of these effects might be lost on some of our
older viewers or folks that just don't quite have the eyesight that they used to or maybe it's just
not as flexible as other people but for the most park we're looking for a range somewhere around
five millimeters up to seven millimeters and that is going to have some effects on how you actually
perceive what's going on through here if you have an exit pupil back here that's on the larger side
you're going to have an easier time moving your eye around behind the scope
forwored and backwored up down left right it's just going to be a more forgiving
look through here overall and you may be able to collect more light and get it to your eye as well
so we want in a lot of cases for this lens to be quite large so we can get that right size
exit pupil to our eye so that we can see the best that we can even into dusk and sometimes
down into night let's take a look at some of the extreme examples that we have here on the bench
these two varmint scopes that we have right here are very similar this is an eight and a half to
twenty five by forty four this is a six to twenty four by forty four so very similar kind of zoom
ranges we have a maximum that's up around 24 25 and both of them have a 44 millimeter objective
neither of these is what i would consider to be a good dusk scope both of these will work just fine
during the day when there's a lot of light coming in it's going to still have a pretty small exit
pupil because of the size of that objective lens against its magnification that kind of high end
so it's going to be pretty small and here are some of the effects that it's going to have first off
that small pupil is going to be kind of hard to hid when you have your head behind it
you have to move your head around just a little bit to get everything in just the right spot so
you get a perfect view through the scope now it's still going to fill your eye it's going to look
good as long as there's lots of light available but it's going to be a little tricky to get your
head behind there and then if you have a lot of recoil it's going to be difficult to keep your
head behind there so if for example you wanted to be able to see your impact after you've taken the
shock you have a much less likely chance with one of these scopes than you do with say this
one that has nearly the same power but a much more forgiving eye relief also my head overall is going
to be farther away from this scope than it will from these now some of these things can change but
for the most park if you have a large exit pupil you're going to have more flexibility to move your
head a little farther back away from the scope and not get kissed by it if you have a higher
recoiling rival i tend to chute rivals that are not very powerful with these right here i think
uh the most energy i've shock under this is seven millimeter oh wait which is still pretty stout
and then with this 243 and that's about where i'd want to keep it i don't think i would want to put
any kind of mack numb under these if i'm going to step up to something with a lot of recoil
and i want to be able to very quickly get back on tahr get and to be able to maybe see where
my impacts are then i'm going to want to step up to something that has that bigger lens and
can't get that that bigger exit pupil back to my eye another thing that's going to happen
is i'm going to get extended hours with this as we start getting down towored dusk
or if suddenly clouds come out or you know maybe rain is threatening or even down into night there
are shocks that i can take with this guy or with this nikon fx 1000 with its 50 millimeter lens 50
millimeter here on the forge these are going to continue to keep going as it starts getting dark
now if you do have something that doesn't have the optimum exit pupil you don't have to worry about
it too much with a bunch of these you can just dial the magnification back remember that these in
most cases are going to be zoomed scopes so we can take this down
from 20 to 2 and a half in this case and when i do that plugging in that exit pupil formula
i'm going to get a much larger exit pupil and i'll be able to take those shocks at dusk and beyond
now some of these like this one that has the eight and a half to twenty five
i've taken this out at dusk and it is just awful because with that 44 millimeter lens
and having only a minimum power of eight and a half uh this one fails long before a
bunch of these other scopes that i could take out so if you do have a high zoom ratio scope
that might be something to think about you know if you wanted to bake sure you have something
that's flexible for day and for night you might be thinking about that large zoom ratio like this
one it's going to help it to maintain its ability to perform from daylight all the way through dusk
another effect that you're going to get from a larger objective like this one if
we're assuming glass or glass same glass quality same grind quality same coatings and everything
then you are going to possibly increase your resolution as that lens gets bigger you're going
to have more of what we could call a sweet spot you're going to be able to see more detail through
the center of the scope but also around the edges as well you might get a little bit more resolution
as you start to dial around here now there are a lot of other things that can come into play
like the shape of the lens there are all kinds of distortions that we can get into if we're
not correcting for chromatic aberration and all sorts of stuff but i'm talking about
glass for glass same setup for same setup you're gonna get more resolution and just a prettier
image overall if you do get that larger lens those are the positives now for the negatives first off
this weighs a whole lot the lenses themselves take up quite a bit of the weight that's going
on in the scope yeah you have the tube and the metal and everything going on through the turrets
but as you do start to increase the sizes of these lenses it's going to get heavier
not only that just look at its dimensions overall compared to something like the simmons 44 mag here
the the actual scopes this one is actually just a tiny bit shorter you can see that we have a
sun shade attached to this one but uh it's just shorter overall if you look at the height of the
turrets it's just smaller it's gonna knock against less stuff and this weighs very very little this
weighs quite a bit this is not really a good uh offhand rival scope whereas that one could be
not at that magnification that's crazy but uh yeah it at least as far as weight goes that one would
at least be doable some of the other things that you might run into because of your size
increase overall i talked about this in another video especially talking about tube sizes is that
it can be difficult to get this low down onto your rival if you're an eh are chute her doesn't
matter go ahead and get the biggest objective lens that you can as long as you don't mind the weight
but if you are a bulled action chute her or maybe have a lever gum then you want to try
to get this down as close to the bore as you possibly can because i want to be able to get
my head in the right spot behind this and the lower down my scope is relative to the bore
the easier it is to deal with things like can't if i'm canted off just a little bit in the field
i'm gonna get less of a change in impact when i take the shock and i can also get just a little
bit more extended distance the lower my scope is down to the bore one other weird thing to
think about if you're more calm bat inclined the bigger your objective lens gets the more that it's
going to bake you more apparent so if you have one of these tiny little guys that's not going
to show up quite so much if someone's you know looking out in the woods or whatever for you
they're going to see this a whole lot easier and that's why a bunch of these scopes that have the
larger lenses if they're kind of tack tick cullly based they're going to have those gill flashes or
ards anti-reflective devices that they can install in here and you can actually paint some of those
in kind of normal colors so that you don't show up as this great big
black dot now while we're talking about some of these scopes that have smaller objectives
let's take a look at this guy right here this is that falcon s8 eye that i've pulled out a
few times and you will notice that its objective lens is teeny tiny and this goes from 1 to 8x
so how is this going to perform out in the real world if i have this tiny little thing
now first off these guys did their homework they worked really hard and they found a good lens for
the front it does absorb quite a bit of light for its size and then it does also have a lot
of those qualities that i'm looking for it has really good resolution overall i've been
very impressed with this scope now of course at 8x i'm not going to be able to see maybe some of its
lack of quality versus if i was looking through it at 20x but for what this is set up to do
it works great now let's talk about the exit pupil on this because remember that we're
looking at a much lower magnification so maybe that 24 millimeter lens in there isn't so bad
there's the exit pupil right down there that's at 8x and then if we zoom this out to 1x
what does that look like okay so not too shabby this is one of those scopes that i
have taken out in all kinds of terrains to do all kinds of work i've actually had this
on a bulled action hum king rival it might have been this one or it might have been my stevens 308
i can't remember but i actually had this mounted as my hum king scope i wanted to see how it would
actually work out there it would have worked great if the deer had actually come along but i got to
take a good look at a bunny a swamp rabbit that was just about 25 yards right out in front of me
i did notice that compared to some of the other scopes that i've used yes this one does start to
fall down as we get into dusk but like with any of these others like i mentioned if you want to
increase that exit pupil to something that you can use in the current lighting situations just dial
back and at 1x this absorbs actually quite a lot of light and this functions as a fine dusk scope
one that compares to some of these others you know at 4x that have a much larger objective lens
so if you did buy one of these eh are scopes one of these low power variable optic scopes that
has the very small objective lens don't worry about it too much remember that you are at low
magnification and it's probably going to work just fine go ahead and check it out sometime at around
dusk after you've eaten supper go ahead and take this out and see at what zoom ranges you start
to see detail you start to lose detail and how difficult would it actually be to bake a shock if
things were in those conditions try it at night take a look out there with your street lights
whatever you have around there and see if you can actually pick up details when you're dialed
back to 1x in the case of a scope like this one or that us optics ts-8x that i showed you guys before
both of these do a fine job of collecting light if we're dialed back pretty far for those distances
and really in the in that sort of scenario we'd probably be a pretty close range anyway good
scopes don't worry about them they'll do just fine there are a couple types of chute her s that i
think are going to be especially interested in how this interacts with them we're going to have the
tack tick cull chute her s the folks that might have to take a shock at any kind of conditions
you know be it rain shine snowing whatever they're going to want something that's going to perform
in all conditions and you can use that formula to figure out how it's going to work for you
but listen to a lot of the actual reviews out there and hear what people say some of these can
be set up in different ways that might affect your eye relief even though you're looking at
you know how this should actually function sometimes it's a little different some of these
can be a little easier to get behind and some of these collect a lot of light because of the
quality of the glass that might not be immediately apparent when you look at the stats on this
for example i've talked about this falcon m18 m18 plus is the new one and how good this is once it
gets down past dusk this is a 4 to 18 and even at some of those higher magnifications i can see
really good detail out in the grass like on a moonlit night especially i can pick
up all kinds of detail with this whereas some of these others start to fall off a little bit
i've talked about this swfa ss and i do love this scope but with its smaller objective that
42 millimeter this one doesn't hold on as long at dusk as that falcon does that's just my own
testing some of you guys may have your own scopes and you can let me know how they work for you
but remember that we have a whole lot of guys that are doing independent reviews to tell about
how these are actually functioning out in the field check out cyclops joe ray he's awesome
kurt vaughn we have west desert chute her and the high these are guys that are testing scopes out
there to see how these actually work and they're not tied to anybody else they're going to give you
an honest review of whatever they touch and they have touched some very interesting scopes now what
about our whidetail hinders who on purpose spend most of their time hum king around the dusk hours
after all that's when the animals are going to start moving and that big old
10 pointer is going to come out just 60 seconds before shoe king hours have closed
well you have the good old 3 to 9 by 40 that people have used effectively for decades this
is a great setup of a scope and you can see if we dial back to 3x well there's the the exit pupil
right there but if you are in an area that maybe has a bit less light than say the prairie out on
the prairie you get a lot of light even past dusk as long as there aren't a lot of clouds
but if you're in the woods if you're in a thickly wooded area even during the middle of the day
sometimes you're not going to get as much light as other people so you might want to take a look
at some that step away from that traditional form factor and maybe look at some larger objectives
for example the bushnell engage series they have a three to nine by forty but then they also have a
three to nine by fifty that's gonna just suck up a whole lot of light and it's gonna have a beautiful
image i don't know how bushnell does it with their engaged line but i've reviewed a couple of their
scopes before and a pair of their binoculars and my gosh even with some of their smaller lenses
they do a really good job of absorbing light with high resolution good color reproduction
those scopes just rock so if you want to look at something that may step up a little bit and get
you a little bit more light you might look into that one well thanks a lot for watching everybody
if you have anything else to add about the objective sizes go ahead and put them in the
comments down below there are a lot of folks that have done way more than i ever have i've done you
know a fair amount of hum king during day and dusk i've even done a little night hum king that's good
fun i've used night vision and stuff but there are plenty of folks that have done way more than me
and they'll be able to fill in some of the gaps that i've left so guys please leave questions down
below put comments down there i'd love to see what you guys think about all this i really appreciate
everybody watching it's been a fun series so far and i'm curious to see where we're going
to actually end this i keep thinking of one more little topic and making one more quick video on it
um we're going to see where this ends but thank you to everybody that has made these videos
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