Questions tagged [light]

The word photography means "drawing with light". Controlling or selecting the light a camera records is essential to all aspects of photographic composition.

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63 views

Calculate the right ISO and exposure compensation based on the ambient light

I'm new to photography and I'm working on this project where I need to find the right balance between ISO and exposure compensation, to take pictures in different environments. This is an App for ...
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49 views

How do you meter shadow with Nikon FM2 built-in light meter

I tried to follow the old adage "expose for the shadows, develop for the highlights", so that I can capture the shadow detail. I only have Nikon FM2 light meter. How can I meter the shadow with it?
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How can I best use two torches (aka flashlights) to take photographs of my artwork indoors?

I have two lights in my room but their light is not enough. So, I count them as ambient light. I don't have enough money to buy something expensive like studio stuff, but I have two torches similar ...
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136 views

How to get rid of brighter dark areas of the object while taking photo or by editing it later?

I'm having a little hard time taking photos of my pencil drawings. I recently posted a question about noise & blurriness. Here the thing is, my art looks much better on paper but when I take ...
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65 views

Why does the Y component in YCbCr represent luma/intensity?

As far as I know, the RGB to YCbCr conversion is just a linear transformation, yet the Y channel successfully captures the intensity value of each pixel. How? In other words, where do these magic ...
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It is correct to match light sources with the same color temperature?

For example, the color temperature of a candle flame, sunrise and sunset have the same color temperature, knowing that its color temperature is the same, could you say that these sources are similar ...
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4answers
333 views

Do cameras actively filter out UV light, or only infrared?

I know that a camera has a filter in front of the sensor to limit incoming light to the visible spectrum, to replicate what a human eye can see. But wherever I look on the internet, I always read ...
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106 views

Light falloff - until lens surface, focal center, or camera sensor?

Preface: if there is a better-suited forum for this question, please direct me. I figured it'd be better to post into Photography and not Physics as some of you might have already examined this ...
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127 views

How to get the most out of low-level monochromatic light?

Do you have any best practices in general for shooting in low-level monochromatic light? This is easily my least favorite lighting condition. Say you're at a Halloween party, and everybody is hanging ...
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3answers
148 views

Why does the camera output an image with multi-colors not shown by the naked eye under the projector?

I was shooting in a gallery that used what appears to be a multi-colored projector and had difficulty shooting in that type of scene as the color was not even across the scene. The image shown below ...
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1answer
538 views

Why is the bottom of this image over-exposed?

I am getting a lighter edge on the bottom of my images... I have googled and can't seem to find anything that points me in the right direction to the cause. Any ideas? Info: Canon 6d OrLit ...
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55 views

Easiest way to make a 1x1 foot surface permanently not (or less) reflective? matt spray, matt vinyl or else?

I am taking pictures with a drone and I need ground control points (such as this) for rectifying the images. I used standard vinyl to make the checkerboard pattern. It is terrible. It is reflecting ...
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Carry bag product photography [closed]

This is my project to challenge myself this week. Getting a professional product photography done for a transparent/ semitransparent carry bag. Challenges - it doesn't not have a firm shape - ...
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How is the illusion of light streaks achieved in this photo? [duplicate]

I've seen a photo with a nice light streaks illusion, that I believe was captured in the camera itself rather than added in post-processing. Can anyone explain how one can replicate it?
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877 views

How to create a gray/black color background in a photograph

These are two examples of photographs with black background. My question is how can I set the background like that? Was it through post-processing or on shoot? by Saul Leiter And this by Hélène ...
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How was this Penelope Cruz photo by Peter Lindbergh lit?

(published in this CNN article). The catch light seems to show us a big window with people standing in front of it. But wouldn't window light produce a more flat lighting? There is a clearly visible ...
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370 views

Why does saturation drop in the shadow areas?

source: http://www.vintag.es/2012/11/ussr-in-colour-photos-1963.html My question is the following: Why does the saturation drops in the shadow areas? Has it something to do with the blue-ish sky ...
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254 views

What visual effect can be seen in the following picture?

I saw this picture on Behance. As an amateur photographer, i just want an analysis of the picture and help in how to recreate it with a different object. original picture credits - Kremer Johnson ...
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243 views

What size is the light beam angle from typical flashlight?

I want to make a handmade LED-flash for my project. I need to know an angle size of a beam from typical flashlight. Let's say from Samsung WB50F for example. It's a Xenon one, but what is the angle of ...
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3k views

How to edit photos shot in fluorescent light

I recently shot a series of pictures (portraits and group shots) in a room with bad (fluorescent) light. I had no possibility of changing that lighting situation. Now back at home and in Lightroom I ...
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182 views

What causes this dark outline produced at the edge of objects in these images?

I'm working on perfecting a green screen algorithm and noticed I was getting a very pronounced dark edge around objects in some scenarios. When trying to figure out what was causing it, I noticed my ...
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566 views

How do you shoot UV images with a full-spectrum camera?

I've had my Sony NEX 3 camera converted to full spectrum and I really like what I can do now. In a previous question, I was curious as to how I could revert the camera to shoot visible light using ...
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639 views

What are the characteristics of light?

RE: https://www.shutterbug.com/content/characteristics-light-quantity-quality-color-direction This article lists 4 characteristics of light: Quantity Quality Color Direction Aren't size and ...
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698 views

Why am I getting a lighting gradient or flickering during daytime with fast shutter speed?

While using a Canon 1Dx Mark II, I noticed there is a flicker in the light when I shoot at high shutter speed (1/4000 or faster) in burst. Basically, there is a gradient between two pictures similar ...
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How to shoot a light trail photo where an object is still in focus? [duplicate]

I have come across this picture of a car where the background has a light trail effect but the object (which is the car) is still in focus. I know how to create the light trail effect but I'm not ...
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392 views

Cross Polarization: Are linear and circular polarizers compatible?

Can cross-polarization be achieved with two linearly polarized (flash) lamps; one either side of a circularly polarized lens? Lens attachments tend to be circularly polarized, while the PVA sheets ...
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696 views

How to achieve a glowy/dreamy light look

I have noticed some photos have this glowy/dreamy light effect. I am not sure how this is achieved (shooting/editing??). Does anyone know? I have included an example.
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Why is distance absent from the exposure triangle?

With exposure calculations, there are aperture, shutter speed, and ISO. Correspondingly, flash and light meters gives you the aperture (as an f-number) and shutter speed for a given ISO. However, ...
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4answers
80 views

Can I dim lights by making amount of power smaller?

Can I dim lights by making amount of power smaller? I'm using Falcon Eyes LH-ESB6060K lighting kit. I thought, It should be possible, but is it safe? And is there any other way to dim it?
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66 views

General purpose opitcal filter for blocking any light

This image shows a polarizer: It's only blocking certain light waves. Is there a filter which blocks all light waves (like a shutter) but which is "controlled" (by manual rotation) like the ...
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1answer
182 views

There is an app or a trick to emulate Portrait Effect on non plus iPhones?

I love the "portrait effect" on my iPhone 8 Plus. Is there an app for the other iPhone models which can emulate it? I'm specifically interested in two things: Background bokeh Studio lights Here ...
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357 views

How to deal with single channel overexposure?

I've been shooting quite a few gigs at clubs/concerts and repeatedly experience issues with scenes lit by small bandwidth lights (for example lasers). These lights cause a single channel to ...
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199 views

My light measurement sensor is returning random (bad) values in my Pentax K-50

Recently I noticed on my Pentax-K50 that the light measurement sensor randomly returns wrong values, resulting in images which are way too dark. For example in well-litt rooms inside I had to crank ...
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5k views

Why use ISO instead of Aperture and Shutter speed? [duplicate]

I am a beginner in photography and I don't have the right understanding for some things. As I understand, with the ISO the camera is more or less sensitive light, with a darker image, a higher ISO (...
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2answers
221 views

Strange light when shooting long exposure [duplicate]

I've been experimenting with some photography for a few months now and I noticed that this happens on pictures with lower shutter speeds: What is this, why does it happen and what can I do to prevent ...
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3answers
229 views

Light at the end of tunnel effect

I'm trying to create a bright light/tunnel light/heaven light effect on DSLR video in which I'm getting closer to the light source. I tried pulling the curtains shut in a room during daytime and ...
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1answer
225 views

Cheap lighting setup for shooting portraits in pitch darkness?

I'm going to be shooting some photos in pitch darkness at a campsite -- we had a friend shoot them last year, but he's a professional photographer and brought expensive strobes and lighting gear. This ...
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2answers
155 views

Choosing overhead lights for a garage studio

I am building up a garage studio and have a c stand setup with an overhead camera (Canon 5d Mark II with EF 100mm f/2.8L Macro IS) somewhat similar to the setup here. I’ve been researching overhead, ...
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1answer
207 views

Why are specular highlights sharp when focusing on close object?

I am trying to understand how specular highlights work. As I understand specular highlights are created by reflecting light-sources in a mirror-like fashion. Because faraway reflected objects are out ...
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2answers
478 views

What's the difference between shooting in daylight and at sunset?

What's the difference of light between taking photos near sunset or during midday sunshine if there is any? Why would you go for a photo at sunset instead of a daylight photo when the sun is higher in ...
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4answers
315 views

How much exposure is too much considering late dusk pictures?

I tend towards darker pictures when it comes to dusk/dawn shots. Of these two, again I tend to the darker. But is the lighter photo here better in terms of the exposure? I am trying to capture the ...
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1answer
188 views

Bendy distortion of straight lines in infinite mirror

I was in one of those mirror mazes where they have massive mirrors in a maze structure. However, these mirrors were lined with LED light strips, which were straight, because they were on the edge of ...
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Is there a connection between color temperature concept and Hershel's color temperature experiment through which he discovered infrared? [duplicate]

I just watched a Cosmos episode about Hershel's experiment, of which i think i was not aware. According to it, red light temperature is higher than blue (measured in celsius). As far as I know, ...
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380 views

Variation or inconsistency in Flash light on same setting

I have a new pair of Apkina TTL 568 flash with soft boxes. I am operating them with trigger. When I take the picture, Flash lights do not give me same light for all the pictures, like for one picture ...
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787 views

How to avoid light flares in long exposure night shots

I keep viewing other photographers night shots and see that they're very clear shots, when I shoot even with the same settings, my shots aren't so clear.. here's example: Question is: How to avoid ...
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3answers
734 views

What is the problem if sun is behind me? What does that signify? Where should the sun be when I take photos?

In the question Why do breathtaking views turn into “boring” photos, and how can I do better? I read: The sun was directly behind you, just like it used to say on the old Kodak info sheets that ...
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3k views

Measuring light sensitivity with dB instead of ISO

The highest ISO camera that I'm currently aware of is the Canon ME20F-SH, which goes up 4.56 million ISO (correct me if I'm wrong). In camera, it measures light sensitivity in dB gain instead ISO. Why ...
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320 views

Lock focus and lightning with Nikon D3100

I am trying to shoot a video with perfectly white background with a similar setup as described here: http://www.gowallaby.com/how-to-get-a-white-background-in-video/ However, Im using Nikon D3100 ...
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2answers
2k views

How to understand flash distance scale when used with a wireless transmitter?

I am reading Bryan Peterson’s book, Understanding Flash Photography. In this book, Bryan mostly talks about using the flash in manual mode and not in ETTL mode. I own a Yongnuo 600-Ex-RT speedlight ...
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1k views

What kind of flash triggers do I need to fire both a Canon and Yongnou (for Canon) flash?

I'm new to studio lighting. I have continuous lighting, but I loathe it. I have been slowly moving to using flash lighting in studio. I have 2 speedlights: 1 Insignia TTL External Flash for Canon ...