Home
>
Photography
>
Light Meter Readings for Film and Digital

Light Meter Readings for Film and Digital

Reflected Light Readings for Film and Digital Images

In order to correctly expose your film or digital CCD there are two variables that must be identified: average reflectance and average light. Unless you have some good reason to meter for other than these two averages, stick meticulously to the method outlined below.

This article deals with reflected light readings. This is the type of light reading taken with an in camera light meter or a hand held meter which is pointed toward the subject. This article does not deal with incident light readings which are a measure of the light falling on the subject.

Average Reflectance

A white painted wall, snow or the ocean reflect most of the light falling on them. A burnt tree, a black fireplace or a coal mine reflect little of the light falling on them.A mid tone falls halfway between these extremes and reflects 18% of the light falling on it. The ISO rating of film or a digital CCD is set so this mid tone is exposed as a mid tone.

Identify a Mid Tone

Identify a mid tone for average reflectance and meter off that. Look for some green grass or foliage, mid tone rocks or bare dirt, weathered timber or whatever you can find that is somewhere in the middle between dull black and shiny white. If you are unable to escape a predominance of one extreme or the other in your framed image, then find an area to meter else where.

If need be, point the meter toward yourself and meter your clothes or else take your coat off, throw it on the ground and meter that.

Sand at the beach, or the palm of your hand are about one stop too bright. These can be used to meter off but you must compensate and the liklihood of a mistake is introduced.

Average Light

Average light is half way between light and shadow. If it's overcast there isn't so much difference between the two extremities as when it's sunny but you still should take a reading of the average light.

Identify Average Light

If you are metering off some trees and scrub in full sun you'll probably find that the scene makes it's own shadows within the foliage. Be careful because the amount of sun and shadow can be confusing.

If metering a tree, aim your meter such that you read off half sun and half shadow on the tree trunk, then if need be, move around the tree to your chosen photo spot to capture the image. On a rough barked tree such as a pine tree, make sure that the texture of the bark on the sunny part has not created half shadow.

If metering a building, meter off a corner so you get one wall in the sun and the adjacent wall in the building's own shadow. Alternatively, meter half the sunlit building and half the shadow on the ground.

When photographing the landscape I always take my own shadow with me. Yes, as long as the sun is shining my shadow will be there with me. I crouch down and meter off the ground and point the meter so half of it reads my shadow and the other half reads the sunny area. That's my reading till the light changes. If I have any doubts about the average reading, I take a reading from the shadow area and another from the sunny area, then see if my average light reading is in the middle.

Metering Indoors

When photographing indoors by window light, be sure to meter for the average of the subtle difference between light and shadow. This difused, directional light, according to my view of the world, is the most attractive and useful light for photography. Although the level is low, the quality is high. Strive to meter it acurately.

Laurie McArthur is a wilderness landscape photographer, based on the New South Wales Far South Coast, Australia.
Laurie's images may be viewed at http://www.southimage.net/

Ashton group transportation logistics management ..

In The News:

Streaming giant Roku has recently been targeted by a pair of cyberattacks, and the company confirmed over a half million Roku accounts were compromised.

The Land Aircraft Carrier combines an all-terrain, six-wheeled vehicle with a two-seat aircraft, which features electric vertical takeoff and landing.

The European Union has sent TikTok a "request for information" on the video sharing platform's newest app, TikTok Lite, under the Digital Services Act, with the aim to clean up social media.

Stay up to date on the latest AI technology advancements and learn about the challenges and opportunities AI presents now and for the future.

The FBI is warning the public about a recent phishing scam via text that claims its targets owe money in Pennsylvania for unpaid road toll charges.

Your Apple Music settings may be revealing to your contacts what you're listening to. Kurt "CyberGuy" Knutsson explains the process to change those settings.

Learn how to secure social media accounts, implement legacy contacts, and create a digital estate plan to protect your online assets from 'ghost hackers' after your death.

A ported phone number scam is leading to more people having their identities stolen by sophisticated scammers. Kurt “CyberGuy" Knutsson tells you what you need to know.

The Great Pacific Garbage Patch, a vast marine debris vortex, is being tackled by The Ocean Cleanup’s innovative technologies. Kurt “CyberGuy" Knutsson explains.

Discover easy solutions to tame autocorrect frustration on iOS and Android devices. Turn off, customize and add personal touches to your typing experience.

Kurt “CyberGuy" Knutsson reveals the six top things to do right now before it’s too late: Tech and life choices that can keep your safer on and offline.

Kurt “CyberGuy" Knutsson shows you some simple steps to discreetly hide apps or an entire app page on your iPhone for decluttering or confidentiality.

The ambient light sensors on smartphones may be turned into cameras, according to researches at MIT. This could pose a threat to people's privacy.

The Autonomous Road Repair System from tech firm Robotiz3d uses artificial intelligence technology to locate potholes and promptly seal them.

Scammers have stooped to using artificial intelligence to scan obituary websites to create fake obituary websites to target the grieving.

Stay up to date on the latest AI technology advancements and learn about the challenges and opportunities AI presents now and for the future.

A Mercedes-Benz Manufacturing factory in Hungary is using humanoid robots to help with human staffing shortages on the factory floor.

Some video games act like unregulated banks, according to CFPB, which has begun monitoring the situation. The agency says children may be most at risk.

Ascender the robot is capable of climbing stairs with heights up to 8.7 inches, and it can give every corner of your home a deep cleaning.

Tax-return scams are on the rise, and one tax expert from a cybersecurity firm says filing your taxes on time is one way to avoid tax scams.

The innovative XPENG Robot Unicorn is inspired by the mythical unicorn, and you may forget the robot is not actually a living creature.

Stay up to date on the latest AI technology advancements and learn about the challenges and opportunities AI presents now and for the future.

The Federal Trade Commission, the federal agency to report scams to, is being impersonated as part of a new sophisticated phone scam.

Eatrenalin is a restaurant in Germany with a Floating Chair innovation that makes the 17,000-square-foot venue feel like an amusement park.

U.S. Air Force Secretary Frank Kendall met with the Senate Appropriations Committee on Tuesday and said he plans to ride in an autonomously-operated aircraft this Spring.

Light Meter Readings for Film and Digital

Photography