By James PenningtonPhotography, night photography and film are often synonymous.
But a new study by photographer James Penney, author of The Night Photographer, shows that the way you take a night photo is completely dependent on what you’re interested in.
For the study, published in the journal Archives of Photography, Penney and his colleagues used digital images taken by an American team at the Royal Observatory Greenwich Observatory, which have been stored in digital format since 2008.
The images are stored in a database that has been updated and is now in the public domain.
The team analysed the images and, using a combination of computer modelling, statistical modelling and experimental data analysis, created a model that they could apply to night photography.
The model looked at how the night-time exposure time varied across different subjects, with subjects typically being darker in the sky and in the foreground, than the background.
The authors found that the exposure time was determined by a combination at least two factors.
First, the sky was a lot darker than the horizon.
Second, the exposure was much longer in the centre of the sky, and the sun was shining much more brightly than the foreground.
In the sky the team found that there were fewer stars than in the background, which was a major factor.
The team found a correlation between the distance from the sun and the exposure length.
The longer the exposure distance from Earth, the longer the sunlit part of the image, and vice versa.
This means that when taking an image, the sun’s light is much more visible than in background.
This is why the researchers found that taking an exposure of about one second longer in this part of sky meant that the sunlight would be much brighter.
This was especially true for images taken at night, when the sun is shining most brightly.
The researchers also found that, because the stars were a lot brighter in the dark, the subjects were much brighter than in other parts of the night.
In fact, subjects with a very dark background had to be more focused to capture the light from the stars.
The study found that this effect had a significant impact on how a photograph was captured.
Subjects who took the exposure too long in the night would lose their ability to focus on the stars, while subjects who took it too long on the ground would see the stars as blurry and lost their ability focus on them.
The effect of the sun shining more brightly on subjects in the middle of the evening also affected how well a photograph would be taken, with the darker the background the more stars were visible in the image.
Penney’s research found that when a subject is exposed to a sunlit background, they’re less likely to capture bright stars and stars more often than when exposed to the dark.
The sunlight’s brighter intensity also means that a subject with a darker background would not be able to get an accurate exposure, with a subject’s ability to see the bright stars diminished.
In short, the effect of exposure is not just dependent on whether you are in the sun or not, but also on the time of day and the distance between you and the star.
Penner, who has been teaching at Griffith University for more than 20 years, says that this study demonstrates how important night photography is in our modern world.
“We need to look at what is actually happening when we look at images in the evening, to understand how images are taken,” he said.
“It’s important to know what we’re looking at and the things we’re photographing, because we’re not going to get all the details from our images.
It’s important for us to understand what is going on.”
Penney has also created a video series that shows how to take an image at night.
He says that the images he uses are also extremely practical and that he uses them on a daily basis.
“I’ve done my own research for a number of years and this is by far the best, most practical, most accessible way I can get my images to the public,” he told The Conversation.
“I can get them into the public eye, where it’s more widely shared, and to my students, who are all in the UK.”
This gives them a better understanding of how night photography works.
It gives them an opportunity to make their own observations and experiments.
“This study has a number other implications for the future of night photography in Australia.
For example, if you’re looking to make a night time photograph, you could consider using a tripod or a night flash.
You could also consider using your phone to photograph your subject from a safe distance.