AMITIAE - Tuesday 24 December 2013
Blacklight: Simple but Effective Free Effects App for iOS Devices
By Graham K. Rogers
A free app for iOS devices, Blacklight, takes the idea of these different light effects and allows users to take photographs, or use images already in a library, and apply similar effects quite simply and quickly. I installed this on my iPhone 5s.
The RGB sliders increase the level of the specific color as the slider is moved to the right, while the Intensity slider increases the amount of light in the image as it is moved right.
With only 4 main controls, adjusting an image is quick and easy; and if the end result is not completely satisfactory, it is simple to do it again. Once the image is adjusted, pressing the Save button adds it to the Photo Library.
I exported one of the normal size images as a 16-bit TIFF file. The resultant image was just over 22" x 16.5" (72 dpi) with a file size of 11.5 MB: respectable enough.
The app has not been optimised for the iPad and I found that it opened in the usual x1 or x2 screens. It is identical to the app on the iPhone and the output is also about the same at 1067 x 1600 (a cropped portrait mode image of 1.7 MP) at 741 KB.
As a free app, there is no real decision to make here and Blacklight stays in my collection.
Graham K. Rogers teaches at the Faculty of Engineering, Mahidol University in Thailand where he is also Assistant Dean. He wrote in the Bangkok Post, Database supplement on IT subjects. For the last seven years of Database he wrote a column on Apple and Macs.
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