The Highlight/Shadow Warning enables you to see the brightest highlights as patches of red. Here we placed the cursor over an overexposed white highlight in the image, which gave us a maximum level of 255 for the Red, Green and Blue channels. If you place the cursor over part of the photo you’ll see the precise level of the sampled area. Your photo’s tones are measured in a range of levels that run between 0 for pure black and 255 for pure white. Here, we can see that the brightest pixels at the right of the graph are peaking far higher than the midtones in the middle and shadows on the left, indicating that the highlights are very overexposed. The histogram in our annotation displays a more balanced range of highlights, midtones and shadows for the edited version of the image than in the histogram of the unedited image (below). Of course, the ultimate aim is to get the image right in-camera.Click the Edit Image button to access extra image-editing tools, such as the Histogram window, so that you can analyse the photo’s exposure problems with more precision. So why use DPP 4? Well the images speak for themselves, and out of preference here at EOS magazine we would rather have the camera and computer doing all the work rather than spending hours correcting substitute settings added by non-Canon RAW converters. Did you have the wrong white balance set when shooting? No problem – just change the white balance setting in DPP and it's instantly put right. And, just as usefully, those settings can be undone, or altered as needed. Open the images in DPP and those corrections are done for you. And that takes time, regardless of how proficient you may be.Īsk yourself, could that time be better spent elsewhere? Now of course, all these settings and their effect on the image can be replicated in other RAW converter software, but you have to make the corrections manually. A further setting – Distortion correction – can also be turned on within the camera. The example shown above is Peripheral illumination correction, but on the latest models there are additional corrections applied automatically – Chromatic aberration correction and Diffusion correction. In third party software, they are discarded.
These corrections are applied automatically to JPEG images but they will only be used on RAW files by Canon’s DPP software. Your EOS camera will automatically correct for common lens aberrations if you use Canon lenses. The images below were all opened as RAW files in Adobe's Photoshop and Canon's Digital Photo Professional and converted to JPEG, with no corrections done. Here are five key settings and Canon features which will be stripped out or substituted with generic processes by third party RAW converters. So if the ‘recipe’ is patented, when it comes to camera algorithms, how can you possibly get the same results with a third-party brand imitating what the original does? after all Coca Cola is patented – you cannot make the same recipe – and other brands simply do not taste the same.
Much of the data saved with the file are algorithms that are patented by Canon.
DIGITAL PHOTO PROFESSIONAL 4 TUTORIAL SOFTWARE
However, the software can only apply generic settings. If you use third party software, there is an option to process the RAW file using the camera settings. These settings are then applied automatically when the RAW conversion is done, but only if using DPP. The camera saves the RAW image file without applying any corrections, but instead saves the settings you have chosen as data within the image file. If you shoot RAW the process is different.
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