How to Use Graduated Neutral Density Filters for Landscape Photography

0Comments

Since the camera was invented, we have tried to copy one of the greatest wonders of our body; the human eye. Unfortunately, despite being over 100 years since the first time that we captured light, we are still far from overcoming Mother Nature.

Why? Because in the visible spectrum your eye sees much better than your camera.

How to Use Graduated Neutral Density Filters for Landscape Photography

Dynamic Range

The parameter that describes this behavior is called Dynamic Range. This basically defines the difference between the minimum and maximum value of brightness that a device (like your eye or the sensor of your camera) is able to record. In the real world, Dynamic Range defines the ability of your camera to see details in very dark areas and very clear (bright) areas of the scene.

If you’re wondering how much more your eye sees, the answer is staggering. Your eyes have about twice as much range that they can see and capture.

How to Use Graduated Neutral Density Filters for Landscape Photography

The problem

That’s why when you look at a marvelous sunset with your eyes you’re able to see all the details in the scene (in both the sky and the land). But as soon as you try to capture it with your camera, you’ll get an overexposed sky or a underexposed foreground. The Dynamic Range of your camera is only able to capture detail in one of those areas so you have to choose.

But if even the best cameras have a Dynamic Range which is only half that of the human eye. So how can we hope to shoot a beautiful sunset or a wonderful sunrise and capture all the marvelous details?

There are different methods to overcome this problem, but my favorite is the use of Graduated Neutral Density filters (GND).

graduated neutral density filters

What is a Graduated Neutral Density Filter?

A Graduated Neutral Density Filter is one made of two distinct parts; a completely transparent area, and a darker section. By setting the darkest part of the filter to correspond with the brightest portion of the scene, you can reduce the exposure difference (dynamic range) in the frame.

To reduce the exposure difference is to reduce the dynamic range of the scene, and thus allow your camera to simultaneously capture detail in both bright and dark areas of the scene. Basically, to make an analogy, GND filters are like a kind of sunglasses for your camera.

Types of GND filters

Graduated Neutral Density Filters are typically distinguished by the type of transition that exists between the transparent and dark areas of the filter. For this reason, we can identify three families of GNDs:

  1. Hard-edge filters, which are characterized by a clear boundary (it’s obvious where one begins and the other ends) between the transparent and dark areas. They are therefore used when the separation between the bright and dark areas of your scene is very defined, such as the horizon at sea.
  2. Soft-edge filters are characterized by a soft transition (they change from light to dark more gradually) and are therefore used when the transition between light and dark areas is not so clear. A classic example is a shot in a mountainous area.
  3. Reverse filters, which are nothing more than hard-edge GNDs with the dark area that fades away the more you move from the line of separation to the upper border of the filter (meaning it’s darker in the middle than on the edge). Basically, they were invented to better manage sunrises and sunsets, where the light is more intense on the horizon line (middle). If you love seascapes like me, this filter will be one of your best friends forever!

How to Use Graduated Neutral Density Filters for Landscape Photography

Which to buy?

Another distinction is between filters is the construction material. Higher quality filters are made of optical glass. Putting an inexpensive resin filter in front of a lens worth hundreds (or thousands) of dollars is not a great idea.

Finally, GND filters are distinguished by graduation, or their ability to block light through the darkest area. Essentially how dark they are at the extreme. Normally in landscape photography, this difference is between one and four stops during sunset and sunrise, depending on weather conditions. This is the reason why you will find these gradations almost exclusively on the market.

Shop for Graduated Neutral Density filters on Amazon.com or on B&H Photo Video’s site (they ship worldwide).

How to use a GND filter in the field

The use of GND filters in the field is very simple; try to take exposure readings in the darkest and in the brightest areas of the scene (usually the sky). The exposure difference will indicate the intensity of the filter to be used. Let’s assume that the light meter reading for the sky is 1/250th, and the one for the rocks in the foreground is 1/30th. The difference between those readings is three stops (250th > 125th > 60th > 30th), so to balance the exposure you must use a 0.9 (3-stop) GND.

At this point, just mount the filter with its dark side over the brightest part of the scene. This is why a GND screw-in filter does not make sense. You would not have the possibility to align the dark area in accordance with the scene as well as a drop-in style filter.

How to Use Graduated Neutral Density Filters for Landscape Photography

To avoid having to hold the filter with your hands (that could be a problem if you are going to use them together with other filters) you can buy a holder, that once mounted in front of your lens will do the job for you. There are many valid solutions on the market, but the best one (in my opinion) is the V5 Pro Holder by NiSi filters. This is the only one that lets you simultaneously install three different filters and a polarizer without any vignetting issues (as wide as 16mm on full frame cameras).

At this point, the limited Dynamic Range of your image will be just a bad memory!

How to Use Graduated Neutral Density Filters for Landscape Photography

Read more from our Cameras & Equipment category

Francesco Gola is an Italian engineer who's fallen in love with photography. Born in Italy in 1981, as soon as he started taking pictures he fell in love with long exposures of seascapes. For him a long exposure is a parallel universe in which to escape from the frenzy of modern life. His passion for the sea and for travels let him to visit some of the most iconic locations on this planet looking at them with different eyes. See more of his work on 500px or his website or join one of his Workshops around the world!

  • Nicola

    Wow, amazing article Francesco. Just a question: if you should suggest a filter system to invest in, with great quality (optical glass of course), which one would you suggest?
    And if you can show me the best place to buy this system would be great (I’m Italian).
    Thanks and keep going with the great articles!

  • Francesco Gola

    Ciao Nicola!
    After many years testing products on field, I would strongly suggest NiSi Filters, both for the holder system and for the NDs and GNDs..unbelievable quality!
    If you’re from Italy, the have an official website if you need more info: http://www.nisifilters.it

  • Nicola

    Thanks for the fast reply, I’ll surely take a look to that, I had many others photographers advising me Nisi filters, it’s time to buy the full kit I suppose.
    Thanks for the help!
    Nicola

  • You know when you are asked to sign a contract, or some kind of release, and you skim through the top bits, then you get to the bottom part, where the words get long and tiny and sound like they were written four hundred years ago, so you just stop reading and sign the damn thing already? Well, all of that stuff – the stuff you never read – that’s called “boilerplate” and it’s actually a really important part of your CSA. The boilerplate bit is the bit that controls what happens when the parties to the agreement (that’s you and your client) disagree. http://www.railwayrecruitmentboard.in

  • Marlenajstocks

    Google is paying 97$ per hour! Work for few hours and have longer with friends & family! !mj323d:
    On tuesday I got a great new Land Rover Range Rover from having earned $8752 this last four weeks.. Its the most-financialy rewarding I’ve had.. It sounds unbelievable but you wont forgive yourself if you don’t check it
    !mj323d:
    ??
    ??;?? http://GoogleFinancialJobsCash323TopCityGetPay$97Hour ?????????????????????????????????????????????????????::::::!mj323d:….,…..

  • walwit

    Too much dark gray on the sky.

  • *in your opinion

  • walwit

    Thank you for your comment, I edited mine accordingly.

  • I prefer the Benro system myself. I use the FH150 for my Tamron 15-30mm f/2.8 lens. Benro also makes a 100mm version (FH100). It goes on easily, is very well built and I believe has an attachment to connect it to the filter threads of a standard lens. The thing I love most about the Benro is it is the only filter system I know of that uses a ROUND circular polorizing filter! It is huge (150mm) but you can turn it just like a normal CPL and attach ND or GND filters in front of it and get and not have to turn the filter housing to get the CPL effect and it is pretty much impossible to then use an ND or GND filter in front of the CPL if it is turned at an angle. Sometimes you need that CPL and the Benro is the perfect setup for that. It will work with NISI filters or any other square 100mm or 150mm filter. I have not seen any vignetting with several filters attached.

  • I got paid 104 thousand dollars in 2016 by freelancing online a­­n­­d I was able to do it by w­orking in my own time f­o­r several hrs a day. I followed a money making opportunity I came across from company that i found online and I am amazed that i made so much extra income. It’s very newbie friendly a­­n­­d I’m so grateful that i discovered this. Here’s what I did… http://statictab.com/6x2fxzv

  • Bluemachine

    This photographer does not use ND filters correctly. A three stop difference between sky and foreground should use a 2-stop ND filter for a natural looking image. A 3-stop ND filter will make the sky too dark and unnatural looking, as the sample images in this article prove. This website publishes too many “self-taught” amateur tutorials instead of verified professionals.

  • Francesco Gola

    Thanks for your professional contribution! Unfortunately NDs filters are not used to balance exposure but to extend shutter speed..to balance exposure you should use instead GNDs, and of course with three stop difference you’re supposed to use a 3 stop filter. Maybe you can find somewhere in this blog something more suitable for you. All the best

  • Don Cavalli

    I totally agree with the NiSi V% Pro system. Very high quality

Join Our Email Newsletter

Thanks for subscribing!


DPS offers a free weekly newsletter with: 
1. new photography tutorials and tips
2. latest photography assignments
3. photo competitions and prizes

Enter your email below to subscribe.
Email:
 
 
Get DAILY free tips, news and reviews via our RSS feed