DPP: Exercise13: Managing Color

For this exercise, you should find two or three images that have what you judge to be a significant color case, as the main purpose of the exercise it to 'correct' it.

DPP: Exercise12: Managing Tone

This exercise seems intended for those just beginning to work with image processing software. It requires taking any image, preferably one in need of processing, and performing adjustments to exposure, brightness, contrast, and white balance.

The image I have used here was taken during my work for assignment two.  I had just stepped into the street and was checking the settings on my camera when I saw a young father with his two daughters, one in each hand.  As we walked toward each other, I made eye contact and held up my camera.  He smiled and nodded and when I went down on one knee he paused for a moment, the camera shutter released, and he began moving again.  I able able to take one more image of the girls, with the father cut off at the waist, and then our encounter was over.

DPP Exercise 11: RAW

The purpose of this exercise is to demonstrate the processing advantages of raw, but at the same time to put these advantages in perspective.  Higher image quality from raw is often over-praised.  

Isn't that the truth?

I rarely hear praise for jpg.  Following the advice of every “serious” shooter on the internet, I have been using raw nearly since I started at OCA about 18 months ago.  This is the first time I’ve actually done a head-to-head comparison and I find I now have more respect for jpg.

DPP: Exercise 7: Tolerance for Noise

The brief for this exercise calls for a series of captures at the camera's full range of ISO settings with the intention of demonstrating noise.  Noise may be the result of insufficient photons striking the sensor and may occur when shooting under low light, with long shutter speeds, or high ISO settings.  The result is the speckling effect seen in the right image in the pair above, showing captures at 80 (l) and 6400 (r) ISO.

DPP: Exercise 6: Highlight Clipping

The purpose of this exercise is to demonstrate the process of highlight clipping.  This happens when at least part of an image is overexposed to such an extent that visual details are lost in what appears to be a bright light, or bright spot.  It may also be said of such an image that it is "blown out," that is detail is blown away by bright light.

The brief calls for finding the exposure settings at which highlight clipping first appears in a contrasty scene (some light and dark elements), then shooting one image one-step higher, followed by three images each one step lower than the preceding.

Simple as it seems, I am having some difficulty.  What my Sony RX100 and Lightroom tell me are not the same.

This is a rather poor capture from my iPad, but it serves the purpose as it shows the camera reading a large area of highlight clipping on the left near a window.  This flashes black in camera.  Note that the histograms show minimal clipping in blue.  Also note that this is not a live view available while shooting, but viewable only after capture.

DPP: Exercise 5: Linear Capture

The purpose of this exercise is to demonstrate the interpretive ability of the camera’s software by looking at what the sensor captures and comparing it to what software renders.

To do this we are asked to take any JPEG or TIFF and first convert it to 16 bits per channel using Photoshop.  I did a bit of googling to find out how to do this in Lightroom before posting to the OCA Photography forum for clarification.  It turns out LR processes in 16 bit and exports JPEG at 8-bit.  JPEG bit depth cannot be adjusted (so far as I can tell), but TIFF can be set at 8 or 16.  So for the purpose of this exercise I exported a 16-bit TIFF.  This is the image, a souvenir collection from a student who went to Mecca for Hajj.