Photography is the art, science, and practice of creating durable images by recording light or other electromagnetic radiation, either chemically by means of a light-sensitive material such as photographic film, or electronically by means of an image sensor.
Questions tagged [photography]
97 questions
3
votes
1 answer
White balance gains on iOS not independent?
I am attempting to manually control the white balance via iOS 8.2 on an iPhone 5S. I am using setWhiteBalanceModeLockedWithDeviceWhiteBalanceGains.
I have also set the focus and exposure and ISO to manual, and then I am stepping the gain on the red…
Eric J
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1 answer
how to get shutter actuation count from image metadata android
I am using metadata-extractor-2.5.0-RC3.jar to extract metadata from an image.
It shows all the details except shutter count.
It there any possibility to get all metadata from an image
private void prosessImage(Uri uri) {
try {
//…
Jeekiran
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1 answer
What is the difference between Exif GPS DestLatitude vs Latitude
In the EXIF metadata GPS schema there are two places to store GPS data:
#1-4 Latitude, LatitudeRef, Longitude and LongitudeRef
#19-23 DestLatitude, DestLatitudeRef, DestLongitude and DestLongitudeRef
In theory the first is where the photo was taken,…
Dusty.Tools
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votes
6 answers
Preloading 20MB+ of images. Is it worth it to attempt this?
I'm developing a photography portfolio website. I want to know what would the best practice be for downloading images from a database. As of right now the entire gallery is roughly 20MB. The gallery is still in development, I intended on just having…
DavidR
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2
votes
1 answer
Android Photography App Double Exposure
I would like to create an android app that would combine two photographs together to create something similar to what you would see in a double exposure photograph. Can you give me any ideas on how to do this?
yowza
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2
votes
1 answer
The technology behind screenshotting
I wish to point out the differences between a camera and screenshotting - but I don't really know enough about the technical side about the latter to do so competently.
How does screenshotting work? Does it "freeze" pixels? Is it the graphics card…
Erica
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2
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1 answer
How to replicate Photoshop filters and actions into MATLAB?
How can I use MATLAB to replicate Photoshop filters and actions? Is there something in the image processing toolbox already that I can use? Or will I have to start from scratch, research each filter, and make a function for it?
Thanks! =)
O_O
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Understanding DNG white balance system
Hello I'm trying to understand how white balance is calculated during dng creation.
I know that all info are inside the matrix AsShotNeutral , that represents white balance and tint inside a DNG. What I do not understand is how this matrix is…
Philip
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votes
2 answers
Obtaining iPhone Photo Exposure Information
Is there any way to get the exposure settings (aperture, shutter speed, ISO) for a photo taken on an iPhone?
An app running on the iPhone can use the UIImagePickerController interface for taking pictures, but that doesn't provide much info about the…
Kristopher Johnson
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votes
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Creating a usb time lapse for Cannon EOS Rebel XS using a c# program
I am wondering if this is even possible. I want to make my own software to control the release of the shutter via the remote shutter release. From the diagrams I have seen it has a 3.3 v (no load) and a threshold voltage of 1.8v. I am wondering…
Barrett
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2 answers
Building a community photography site, where can I store my photos online?
I am in the process of laying down the requirements for a photography community site. An important feature to investigate would be allowing more fotos/account than rival sites around my country's internet. What are the possibilities out…
thanos panousis
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2 answers
Android method for automatically capturing photos and uploading them every X seconds
I have the following task:
Later this month, I will launch an Android smart phone (htc droid incredible) aboard a solar balloon much like I did last May.
I would like to configure the Android to take a photo every X seconds and upload it to Google+.…
glossarch
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votes
6 answers
Should a CMS be used for a photographer portfolio web site?
My friend photographer asked me to develop a portfolio web site, and I'm wondering if a content management system (CMS) should be used for this purpose? The website contains a minimum of dynamic stuff, mostly just photo galleries and a "Contacts"…
Roman Kolpak
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votes
2 answers
Determining camera parameters
Given a picture taken by a simple digital that contains an image of a rectangle of known dimensions. How can I - to some degree of accuracy - determine the parameters of this camera?
I am mostly interested in Pan-, Tilt- and Swing…
dwergkees
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vote
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how does photoshop exposure tool modify colors
I would like to know how the Photoshop Exposure tool works (In CS4 it's Image -> Adjustments -> Exposure...)
There are three sliders: Exposure, Offset and Gamma Correction. I am interested only in the Exposure slider, ignoring the other two. It…
Michal Ferko
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