kfconcept

K&F Concept
K&F Concept    Blog >

Enjoy Your Selected Digital Life

Recently Viewed
  • Recently Viewed
  • Recently Viewed list is empty.

Compare (0) 0
  • Compare
  • You have not chosen any products to compare.

  • Compare
Currency: USD
  • Currency

Log Into Your Account

Account

Order History

Wish List

Login

Forgotten Password?

Or connect with

Register Account

Already have an Account?Log In

  • Shopping Cart
  • Your shopping cart is empty!

  • Register/Login to purchase, earn points
  • Favorite
  • Your wish list is empty.

  • Register/Login to like, earn points
  • Guide
    • Filter Guide
    • Lens Adapter
    • Product Review
  • News & Reviews
    • Camera Reviews
    • Sample Gallery
  • Tutorials
    • Photography Basics
    • Landscape Photography
  • Inspiration
    • Travel
    • Travel Stories
  • Home
  • Blog
  • What Does the ND (Neutral Density) Filter Number Mean and How to Purchase One?

What Does the ND (Neutral Density) Filter Number Mean and How to Purchase One?

Kentfaith 2019-12-10 09:05:37 2 Comments 1

What is an ND (neutral density) Filter?

The neutral density (ND) filter is one of the basic gears that should be included in every landscape photographer’s camera backpack. Many beginners may don’t know how, where, and when to use them. In this article, we will introduce some basic knowledge about it.

The ND filter is a filter that, placed before the lens reduces the amount of light reaching the camera's sensor. It acts like a pair of sunglasses to your lens.

What Does the ND (Neutral Density) Filter Number Mean and How to Purchase One?



When would I use an ND filter?

One question you probably have is why and in what situations would you want to reduce the amount of light coming into your camera sensor.

Below are 5 situations you might need an ND filter to help.

Landscape 

When you want to bring the brightness of the sky down then it would be a perfect time for a certain type of ND filter.

Video shooting

Video shooting with wide aperture lenses outside is another application if you want to shoot in a 2.8 or even wider. you are doing the day when it's very bright. way too much light coming into the camera kind of locked into out shutter speed. You cannot turn the ISO down further and that is a problem you can't solve without an ND filter. many high-end video cameras have ND filters built into them.

Strobes

We also applications for strobe use.

Again if you’re trying to go with a very very wide aperture on a sunny day well cameras have sync speed limits which means you cannot really use super-fast shutter speed and so one of the best ways to manage that is to lower the amount of light coming in-camera through an ND filter. 

Long exposure

For example, the long exposure shots like if you’re shooting a river or a stream or waterfall and you want to get that misty look. An ND filter is a spectacular way to go. However, it might be confusing in terms of the grade of ND filter you have. You have to know how dark it is going to get and the problem is these nomenclatures are used interchangeably so let’s just dive into the chart.

Stop

A stop is an arbitrary amount of light. If you have a shutter speed that’s twice as long as one before. You’re letting in twice the amount of light that is one stop. ND filters are rated in the amount of light that they reduce coming into the lens. so if we say this is an ND filter with the one-stop intensity that means it would let in half the amount of light as it did before and this is how ND filters are rated. So they have different intensities from 1-9 or 10,000? 

There are only a few of them that you really need to worry about I am gonna point those out here. 


What Does the ND (Neutral Density) Filter Number Mean and How to Purchase One?


What does the ND filter number mean?

ND filters come in different strengths or darkness levels. For the photographer, the easiest way is to have ND filters that tell you how many stops of light they will darken your exposure. Most brands of ND filters label the ND filters with either a factor number or optical density number. But for the photographer, neither of them is referred to the number of stops by which the light is reduced.

There are two common ways of quoting ND filter strengths, and one less common:

  • 2x, 4x, 8x, etc. Sometimes these are referred to as ND2, ND4, ND8, and so on. These refer to the amount by which the light is diminished. An ND2 filter halves the light, while an ND8 filter reduces it to one eighth.

  • 1 stop, 2 stops, 3 stops, etc. Sometimes these are referred to as EV, for exposure value. These are probably the most convenient measurement because they tell you how many stops they'll adjust your exposure by.

  • Numbers like 0.3, 0.6, 0.9 etc. These are basically just 0.3 x the number of stops of EV. These are less common.

Each stop of exposure value refers to a halving of light, so:

  • 1 stop = ND2

  • 2 stops = ND4

  • 3 stops = ND8

  • 4 stops = ND16

And so on.

Stacking multiple ND filters adds stops, and multiplies strength values.

So, ND500 sounds like a lot, but it'd be the same as stacking an ND16 and an ND32 (16 x 32 = 512; manufacturers round it to 500).


How to purchase one?

When you go to purchase an ND filter often it is going to have an nd number that will say something like nd2, nd4, nd8, nd16.

What is that referring to? Now the easiest way to keep track of this is to think of it in terms of fractions 

So if you have an ND filter with strength or intensity of 2 all you need to do is turn it into a fraction by putting a 1 above it. So ND filter of 2 is going to let in half the amount of light. An ND filter of 4 is going to let in 1/4 amount of light and so on. So if it’s a 3 stops reduction it’s going to let in 1/8. if it’s a four-stop reduction so it’s an ND 16 it’s going to let in 1/16. if it’s an ND filter then reduce it by 5 stops that would be an nd 32 . and that’s going to let in a fraction of 1/32. and so on and so forth. 

Shop K&F ND Filters

What is the image effect of ND filters?

Here are some more photographs from different F Stops of ND filter:

What Does the ND (Neutral Density) Filter Number Mean and How to Purchase One?

What Does the ND (Neutral Density) Filter Number Mean and How to Purchase One?

What Does the ND (Neutral Density) Filter Number Mean and How to Purchase One?


Situations where ND filters can be applied:

1:Smoothing water movement in waterfalls, rivers, oceans, etc.

2:Achieving a shallower depth of field in very bright light

3:Reducing diffraction (which reduces sharpness) by enabling a larger aperture

4:Making moving objects less apparent or not visible (such as people or cars)

5:Introducing blur to convey motion with moving subjects



Leave your comment
Cancel reply
Note: HTML is not translated!
Related Products
77mm Magnetic Black Mist Filter 1/4 Special Effects Filter HD Multi-layer Coated, Waterproof/Scratch-Resistant/ Anti-Reflection, Nano-X Series
77mm Magnetic Black Mist Filter 1/4 Special Effects Filter HD Multi-layer Coated, Waterproof/Scratch-Resistant/ Anti-Reflection, Nano-X Series
52″/134cm Aluminum Lightweight Compact Tripod 10kg/22.04lbs Load Capacity for Canon, Nikon DSLR Camera  (Ship to US only) (TM2515B)
52″/134cm Aluminum Lightweight Compact Tripod 10kg/22.04lbs Load Capacity for Canon, Nikon DSLR Camera (Ship to US only) (TM2515B)
67mm ND2-ND32 (1-5 Stop) Variable ND Filter and CPL Circular Polarizing Filter 2 in 1 for Camera Lens No X Spot Weather Sealed
67mm ND2-ND32 (1-5 Stop) Variable ND Filter and CPL Circular Polarizing Filter 2 in 1 for Camera Lens No X Spot Weather Sealed
58mm Variable ND Filter Kit 2pcs ND2-32 & ND32-512 with Waterproof Anti-scratch Anti-reflection Green Film NANO-X Series
58mm Variable ND Filter Kit 2pcs ND2-32 & ND32-512 with Waterproof Anti-scratch Anti-reflection Green Film NANO-X Series
52mm Filter Kit MCUV + CPL Circular Polarizer Filter & MCUV Protection Filter HD Ultra-thin with 18 Multi Layer Coatings Nano K Series
52mm Filter Kit MCUV + CPL Circular Polarizer Filter & MCUV Protection Filter HD Ultra-thin with 18 Multi Layer Coatings Nano K Series
49mm Empty Magnetic Base Ring (Works ONLY with K&F Concept Magnetic Filters / Quick Swap System)
49mm Empty Magnetic Base Ring (Works ONLY with K&F Concept Magnetic Filters / Quick Swap System)
12x50 Monocular with Smartphone Holder and Tripod, FMC Coating and BAK4 Prism, Waterproof, Anti-Fog, Suitable for Bird Watching, Hunting, Hiking, Concert, Travel
12x50 Monocular with Smartphone Holder and Tripod, FMC Coating and BAK4 Prism, Waterproof, Anti-Fog, Suitable for Bird Watching, Hunting, Hiking, Concert, Travel
K&F Concept MCN1 43mm Lens Filter Kit ND1000 CPL with Multiple Layer Nano Coated
K&F Concept MCN1 43mm Lens Filter Kit ND1000 CPL with Multiple Layer Nano Coated
Related Articles
How To Connect Phone Camera To Drone ?
How To Connect Phone Camera To Drone ?
What Does the ND (Neutral Density) Filter Number Mean and How to Purchase One?
What Does the ND (Neutral Density) Filter Number Mean and How to Purchase One?
A Particular Microphone Makes Me Sound Bad ?
A Particular Microphone Makes Me Sound Bad ?
How To Buy A Drone In Amazon ?
How To Buy A Drone In Amazon ?
How Many Drones Did Obama Launch ?
How Many Drones Did Obama Launch ?
ND filter VS CPL When and how to use them?
ND filter VS CPL When and how to use them?
What is an ND1000 Filter?
What is an ND1000 Filter?
Canon RF70-200MM F2.8 L IS USM Lens Review
Canon RF70-200MM F2.8 L IS USM Lens Review
6 Must-have Accessories for Landscape Photography
6 Must-have Accessories for Landscape Photography
K&F Concept ND Filter Review
K&F Concept ND Filter Review
How Variable ND Filters Works?
How Variable ND Filters Works?
ARE GRADUATED NEUTRAL-DENSITY FILTERS REALLY USEFUL?
ARE GRADUATED NEUTRAL-DENSITY FILTERS REALLY USEFUL?
Demo & Review K&F Concept 1-5 Stop Variable ND Filter
Demo & Review K&F Concept 1-5 Stop Variable ND Filter
K&F Concept Ultra Slim Variable ND Filter ND2-ND32 (New version): Review
K&F Concept Ultra Slim Variable ND Filter ND2-ND32 (New version): Review
Review: K&F Concept 58mm Variable Neutral Density Filter
Review: K&F Concept 58mm Variable Neutral Density Filter
How to choose an ND filter?
How to choose an ND filter?
What's the Best Value for Money ND Filter?
What's the Best Value for Money ND Filter?
Is the ND filter only working for landscapes?
Is the ND filter only working for landscapes?
Blog Category
  • Guide
    • Filter Guide
    • Lens Adapter
    • Product Review
  • News & Reviews
    • Camera Reviews
    • Sample Gallery
  • Tutorials
    • Photography Basics
    • Landscape Photography
  • Inspiration
    • Travel
    • Travel Stories
Search Article
Latest from the Blog
What Do Photojournaists Use To Strap On 2 Cameras ?
How To Sync Arlo Camera After Changing Batteries ?
Can Surveillance Cameras Be Used Against You In A Workplace ?
How Do I Turn Wifi On Vivitar Dvr922 Camera ?
How Do I Reset My Nest Camera Wifi ?
How To Reconnect Arlo Camera After Changing Batteries ?
How Do My Len Come Out On Digtial Voggling Camera ?
Can Faulty Lens Damage Camera Canon ?
Do Walgreens Cameras Have Microphones ?
How To Use Wifi Camera ?
  • Easy Payment Multilple Payment Options

  • Free Shipping Global WareHouse Shipment

  • No Risk 30-Day No Reason Return

  • Limited Deals Buy More, Save More

  • Tax Free No any surcharges or tax fee

Information
  • About us
  • Contact Us
  • Site Map
  • Blog
  • Video
  • Gallery
  • VIP Membership Rewards
Service
  • Privacy Policy
  • Terms & Conditions
  • Shipping & Delivery
  • Payment Info
  • Warranty, Return & Refund
  • Intellectual Property Rights
  • Affiliates
  • Wholesale
Support
  • My account
  • Order History
  • FAQs
  • Extend Warranty
  • Logistics Tracking
NewsLetter

Get the latest product, K&F Concept respects your privacy.

Follow us
Powered By KENTFAITH © 2023