Exercise 1: Correction

In this first exercise of the fourth part of the course I am to look at correction within an image, namely dust correction and lens flare, both of which are fairly simple and don’t alter the image in an obvious way. We had to take 2 images, one containing dust shadows and the other with polygon flare, images were available to us in key resources section of the OCA website but I was able to use two of my own.

The above images show the before and after of dust correction. This was a very simply procedure in Lightroom 5, having magnified the image to 100% I slowly and methodically moved around the image looking for the dust shadows and once found I would use the spot removal tool, ensuring the diameter of which is tight by covering the dust spec I would then adjust the density and feathering of the spot click, this would use a content aware algorithm that replaced the selected pixels with like for like in the vicinity. Which in this case was rather simple due to the plain background solid colours. I also found that in Lightroom the option to use the visualise spots tool within the spot removal to be an extremely useful and effective aid, as shown below it changes the image into what appears to be a threshold effect, using just black and white the dust specs stand out vividly against the black when you adjust the sensitivity.

Secondly the two images showing before and after the lens flare correction. This was achieved by magnifying close to the spot while still having the surrounding in view. I then used the spot correction tool to remove the majority of the flare, however this still left the image with some added disturbances due to the size of the adjustment, I then manipulated the source of the clone and placed it over a better match in the sky, this gave a much more accurate adjustment, it was just left then to use the adjustment brush and to make an overall adjustment to the sky, removing the more subtle colour changes. I still left the slight range from brightness in the sky from left to right as I found it more realistic and interesting to the image.

Neither of these image corrections alter or distort the subject or overall feel from the original image so therefore I feel that they are more than justifiable. I believe with photography in general it is important to use the camera as much as possible and to its full extent and where possible these adjustments should be corrected in composition and timing however this is not always possible so post production quite rightly allows this to be done.


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