Life shrinks or expands in proportion to one’s courage. – Anais Nin
This sunset image was taken several months ago near San Diego.It is the result of quite a bit of processing, as the original appeared dull and flat. It was an example of digital images (RAW files) being inherently low contrast, appearing soft (unsharp) and flat with a limited perceived depth. (In spite of this, RAW files are generally the most desirable format because they contain so much image information that a plethora of post-processing functions can be performed on them with excellent results.)
(Jpg images are different. They are processed and sharpened within the camera at the time the photo is taken. The degree of sharpening depends on the setting that you have chosen for sharpness in the shooting menu. This is an advantage if a person sure that they will never want to enhance or further process their (jpg) images. Otherwise, RAW file capacity is an advantage. (As EvaUhu of lightshadowcolor.wordpress.com commented below, the best file format to shoot depends on the intended use for the image.)
Sharpening is a form of increasing contrast. Specifically, it is a very localized increase of contrast between adjacent dark light pixels (such as at edges). Some other modes to increase contrast, besides the actual “contrast” sliders, are: pre-sharpening, levels, curves, dodging, burning, white point, black point, gamma setting, tonal contrast, detail enhancer, detail extractor, structure and output sharpening. This is only a partial list. The fact that there are so many different ways to adjust the contrast of digital images reflects the degree that raw files suffer from poor contrast.
When I took this photo, the in-camera histogram indicated correct exposure for both highlights and shadows. However, when the RAW file was downloaded, the appearance was flat, dull and somewhat underexposed. Here is that original image, cropped but otherwise totally unprocessed.
(My thanks to Kyle Kuns of of hikingangelesforest.wordpress.com and to Heather of rapidcityrecess.wordpress.com for recommending that I include this original image)
To create the image at the very beginning of this post, contrast was added in six different ways. These were: first in Adobe Camera Raw for brightness and (1) pre-sharpening; then with Color Efex Pro4 adjustments for (2) curves, (3) tonal contrast and (4) darkening the side edges and finally with Nik Sharpener Pro 3 (5) adaptive sharpening for display output. Each of the first 4 steps (except for the pre-sharpening which was purposely kept very weak to avoid halo artifacts) improved the appearance, but not enough. The final image, however, looks pretty good to me.
My point is to explain that digital images, shot as RAW files, require processing in order to look their best. Even the best shooting technique does not overcome this limitation.
I welcome comments and suggestions (criticisms).
J. Michael Harroun©2013