All
Search
Images
Videos
Maps
News
Copilot
More
Shopping
Flights
Travel
Notebook
Report an inappropriate content
Please select one of the options below.
Not Relevant
Offensive
Adult
Child Sexual Abuse
Length
All
Short (less than 5 minutes)
Medium (5-20 minutes)
Long (more than 20 minutes)
Date
All
Past 24 hours
Past week
Past month
Past year
Resolution
All
Lower than 360p
360p or higher
480p or higher
720p or higher
1080p or higher
Source
All
Dailymotion
Vimeo
Metacafe
Hulu
VEVO
Myspace
MTV
CBS
Fox
CNN
MSN
Price
All
Free
Paid
Clear filters
SafeSearch:
Moderate
Strict
Moderate (default)
Off
Filter
Shop focus optics
Sponsored
$26.99
$44.99
2000X24 Monocular Focus Optics Telescope Onocular Power Monocular For
eBay
Free shipping
40% off
$26.99
$44.99
2000X24 Monocular Focus Optics Telescope Onocular Power Monocular For
eBay
Free shipping
$4.23
$10.85
2000X24 Monocular Focus Optics Telescope Onocular Power Monocular For Adults Kid With Phone Adapter
Aliexpress
61% off
$4.23
$10.85
2000X24 Monocular Focus Optics Telescope Onocular Power Monocular For Adults Kid With Phone Adapter
Aliexpress
$9.35
$23.97
Vector Optics 34mm Inside Diameter Mainly For Side Focus Knob Of Vector Optics Marksman Series
Aliexpress
60% off
$9.35
$23.97
Vector Optics 34mm Inside Diameter Mainly For Side Focus Knob Of Vector Optics Marksman Series
Aliexpress
$259.99
$299.99
Athlon Optics 20-60X80 Dual Focus Forerunner Spotting Scope - ED Focal Lens With Tripod
Amazon.com
5
Free shipping
13% off
$259.99
$299.99
Athlon Optics 20-60X80 Dual Focus Forerunner Spotting Scope - ED Focal Lens With Tripod
Amazon.com
5
$80.00
Newport New Focus 9892 Flipper Optic Mount 2 in Optic Diameter, 2 Pcs
eBay
Free shipping
$80.00
Newport New Focus 9892 Flipper Optic Mount 2 in Optic Diameter, 2 Pcs
eBay
Free shipping
$34.50
$137.99
Focus Eyewear I-Deal Optics Eyeglasses Frame 43-14-130 Clear Black
eBay
74% off
$34.50
$137.99
Focus Eyewear I-Deal Optics Eyeglasses Frame 43-14-130 Clear Black
eBay
5:01
YouTube
PhysicsPlace
Optics explained 2: Focus or Focal point
In this video you will find: - Explanation what a focus or focal point is. - Explanation how to determine the focus point with a converging lens. - Explanation how to determine the focus point with a diverging lens. - Two example questions. The PhysicsPlace is an educational YouTube channel where high school and college physics is explained ...
16.8K views
Jun 1, 2020
Focus Music
3:52:18
Deep Focus - Music For Studying, Concentration and Work
YouTube
Quiet Quest - Study Music
28M views
Jan 19, 2020
5:01:34
5 Hours of Deep Focus Music for Studying - Concentration Music For Deep Thinking And Focus
YouTube
Focus Music 4K
8.6K views
3 months ago
4:00:00
4 Hours of Deep Focus Music for Studying - Concentration Music For Deep Thinking And Focus
YouTube
Quiet Quest - Study Music
2M views
Apr 19, 2022
Top videos
2:54
Ocular Focus Rifle Tutorial with Ryan Cleckner: Why It's Important and How to Use It
YouTube
NSSF—The Firearm Industry
57K views
Mar 28, 2023
9:58
Optics Tutorial - 2 - Lens and focusing basics
YouTube
opticsrealm
225.2K views
Aug 25, 2011
6:19
Night Vision 101: Focus, Diopter, Aperture
YouTube
Hop
36.4K views
May 5, 2021
Focus Tips
20:39
How to Quickly Improve Focus - Andrew Huberman
YouTube
After Skool
1.7M views
Apr 25, 2023
15:57
How to Get Your Brain to Focus | Chris Bailey | TEDxManchester
YouTube
TEDx Talks
19.2M views
Apr 5, 2019
6:18
5 Brain Hacks to Improve Focus & Concentration Instantly
YouTube
Dr Sid Warrier
223.2K views
11 months ago
2:54
Find in video from 00:01
Introduction to Ocular Focus
Ocular Focus Rifle Tutorial with Ryan Cleckner: Why It's Importan
…
57K views
Mar 28, 2023
YouTube
NSSF—The Firearm Industry Trade Association
9:58
Find in video from 00:18
Spherical Surface and Optical Power
Optics Tutorial - 2 - Lens and focusing basics
225.2K views
Aug 25, 2011
YouTube
opticsrealm
6:19
Find in video from 00:21
Focus
Night Vision 101: Focus, Diopter, Aperture
36.4K views
May 5, 2021
YouTube
Hop
6:32
How To Use Different Focus Lenses - Finding the Perfect Lense for Ev
…
71.2K views
Mar 9, 2018
YouTube
Trotec Laser
0:59
what is principal focus I "Understanding Principal Focus i
…
359 views
10 months ago
YouTube
PEN Academy
6:16
The Secret About Flex Focus Adjustable Eyeglasses
8K views
Dec 31, 2024
YouTube
Jordan Liles
1:10
Find in video from 00:02
Introduction to Focusing
How to Use a Microscope | Step 4 Focus | Optics University
11.4K views
Oct 20, 2023
YouTube
Carson
1:50
Find in video from 00:35
Flex Focus Optical Lens Technology
'Flex focus' readers put to the test
47.1K views
Jun 13, 2019
YouTube
KSAT 12
5:33
Find in video from 04:08
Magnification and Reticle Focus
New Rifle Scope Owner? Setting up the Ocular Focus on an Arken Optic.
7.5K views
Feb 16, 2024
YouTube
RugerGundog
9:35
Find in video from 00:01
Introduction to Focus and Parallax
Scope parallax and focus Explained
130.6K views
Nov 3, 2020
YouTube
Cyclops Videos Joe W Rhea
9:38
How To Sight In a Riflescope
25.8K views
4 months ago
YouTube
Vortex Optics
1:13
Find in video from 00:05
Introduction to Focusing Binoculars
How to focus binoculars properly
77.2K views
Aug 15, 2022
YouTube
RSPB
14:07
Multiple lens systems | Geometric optics | Physics | Khan Academy
218.9K views
Jul 6, 2014
YouTube
khanacademymedicine
2:36
Flex Focus Adjustable GLASSES REVIEW / #amazonfinds #review #
…
6.3K views
May 18, 2024
YouTube
JoAnne's INSPIRATIONS
10:02
Find in video from 02:05
Setting Up the Focus Tube
Focusing a ZenithStar 61 and UniGuide 32mm Guide Scope
7.4K views
Dec 31, 2020
YouTube
AstroVagabond
Understanding Focal Length and Field of View
Nov 26, 2019
edmundoptics.com
12:05
Find in video from 00:05
Introduction to Optics
How Optics Work - the basics of cameras, lenses and telescopes
130.9K views
Aug 14, 2021
YouTube
Improbable Matter
11:48
Find in video from 03:07
Focusing the Lens Meter
How To Use The Lensmeter - Parts, Focus and Setup of The Marco L
…
111K views
Apr 13, 2017
YouTube
Laramy-K Optical
3:15
Find in video from 00:03
Introduction to Focus Finding
6 - Focus finding
6.4K views
Jan 23, 2020
YouTube
Optical Systems
11:53
Find in video from 00:26
Proper Back Focus for RedCat51
Back-Focus 101: The Petzval Lens ft. William Optics RedCat51
33.8K views
Jul 28, 2021
YouTube
AstroBlender
4:13
PTZOptics Focus Calibration Guide
4.8K views
Jun 18, 2024
YouTube
PTZOptics
3:29
How Lenses Function
1.1M views
Nov 14, 2016
YouTube
Canon Imaging Asia
Depth of Field and Depth of Focus
Nov 26, 2019
edmundoptics.com
54:57
Ray Optics 16 : Lens - Introduction : It's Types , Optical Centre , Focus
…
1.7M views
Oct 21, 2019
YouTube
Physics Wallah - Alakh Pandey
1:26
Find in video from 00:15
Changing Focus Mode
Lock Focus Like a Pro! Nikon D7100 Easy How to Guide
12.8K views
May 22, 2024
YouTube
Setup & Solve
2:31
Instant 20/20 Vision Glasses - Adjustable Focus Lenses
108.1K views
Nov 23, 2017
YouTube
Tech Angel
10:53
The 5 Best Monoculars In 2025 [Buyer's Guide 2025]
28.1K views
Feb 24, 2024
YouTube
The Tech Plug
9:22
Find in video from 03:11
Prime Focus Imaging Method
Astro-Tutorial #1.14: Attaching the Camera - Afocal Projection vs Pri
…
28.6K views
Dec 7, 2020
YouTube
catchingphotons
6:22
Find in video from 01:34
Tip 1: Focusing from Infinity
3 Tips for FAST Focusing of Manual Lenses
24.6K views
Dec 30, 2019
YouTube
Dave Hanner
See more videos
More like this
Shop focus optics
Sponsored
$26.99
$44.99
2000X24 Monocular Focus Optics Telescope Onocular Power Monocular For
eBay
Free shipping
40% off
$26.99
$44.99
2000X24 Monocular Focus Optics Telescope Onocular Power Monocular For
eBay
Free shipping
$4.23
$10.85
2000X24 Monocular Focus Optics Telescope Onocular Power Monocular For Adults Kid With Phone Adapter
Aliexpress
61% off
$4.23
$10.85
2000X24 Monocular Focus Optics Telescope Onocular Power Monocular For Adults Kid With Phone Adapter
Aliexpress
$9.35
$23.97
Vector Optics 34mm Inside Diameter Mainly For Side Focus Knob Of Vector Optics Marksman Series
Aliexpress
60% off
$9.35
$23.97
Vector Optics 34mm Inside Diameter Mainly For Side Focus Knob Of Vector Optics Marksman Series
Aliexpress
$259.99
$299.99
Athlon Optics 20-60X80 Dual Focus Forerunner Spotting Scope - ED Focal Lens With Tripod
Amazon.com
5
Free shipping
13% off
$259.99
$299.99
Athlon Optics 20-60X80 Dual Focus Forerunner Spotting Scope - ED Focal Lens With Tripod
Amazon.com
5
$80.00
Newport New Focus 9892 Flipper Optic Mount 2 in Optic Diameter, 2 Pcs
eBay
Free shipping
$80.00
Newport New Focus 9892 Flipper Optic Mount 2 in Optic Diameter, 2 Pcs
eBay
Free shipping
$34.50
$137.99
Focus Eyewear I-Deal Optics Eyeglasses Frame 43-14-130 Clear Black
eBay
74% off
$34.50
$137.99
Focus Eyewear I-Deal Optics Eyeglasses Frame 43-14-130 Clear Black
eBay
$1,495.00
Focus Optics Module
eBay
Free shipping
$1,495.00
Focus Optics Module
eBay
Free shipping
Feedback
Feedback