Post-processing

Post-processing in Canon 60D: Canon 60D provides the following post-processing menus : Creative Filters Resize Let us see how we can use them one by one. In the Playbacks menu scroll using QCD to highlight the option Creative Filters and pres SET. Scroll through the images you have taken using QCD and choose the image for applying creative filters. Pressing SET again will show a new screen which shows four icons each representing a different creative filter. You can highlight any of these filters by using QCD. Grainy B/W: This gives a monochrome image with high grain similar to a high ISO black and white film. There are three settings available-Low, Standard and Strong. Choose the one you want by using QCD and then press SET to apply the filter. Soft focus: This reduces the detail in the image by blurring it. This filter gives you a soft feeling and is useful for portraits. There are three settings available-Low, Standard and Strong. Choose the one you want by using QCD and then press SET to apply the filter. Toy camera effect: This gives a colour cast to the image (Picture C6) like a cheap toy camera and also darkens the corners (vignettes), which is typical of a low quality lens. (Frankly, I am not sure why you would buy a camera worth tens of thousands of rupees, degrade its performance and make its output look like that from a cheap camera,but it is there in case you want it!). There are three options available-Cool (more bluish), Standard and Warm (more yellowish). Choose the one you want by using QCD and then press SET to apply the filter giving an impression of limited DOF. It thus emulates the effect of photographing miniatures. After you select this filter, a rectangular box that indicates the zone of sharp focus will appear on the monitor. You can move this box up and down, using the QCD. Choose a zone of sharp focus and then press SET. This will cause the area outside the box to get blurry this creating the effect of limited DOF. Miniature effect: (Picture C7). This is an interesting filter. One of the telltale signs of an image of models (or miniatures) compared to an image showing real things is the lack of depth of field (DOF) in the former case. With this filter, you can create a miniature effect by photographing a normal scene and applying this filter. It will essentially keep a slice of the image in sharp focus and blur the rest thereby Note: In case you have photographed image with large RAW and JPEG then the filter will be applied to large RAW file and not the JPEG file. In case M RAW + JPEG and S RAW + JPEG, the filters will be applied to the JPEG (not RAW) images. Resize: This is another useful postprocessing command. In the Playbacks menu scroll using QCD to highlight the option Resize and press SET. Scroll through the images you have taken using QCD and choose the image for resizing. Pressing SET again will show a new screen which shows the four resize options available. These are (the number of pixels are shown in brackets): M (8 MP, 3456 X 2304) (4.5 MP, 2592 X 1728) (2.5 MP, 1920 X 1280) (0.35 MP, 720 X 480) Choose the one you want by using QCD and then press SET to apply the filter. Canon 60DNote that the size S2 is designed for viewing images on a photograph frame or HD TVs and S3 is meant for Web. This command has a limitation. Despite the name, it works as a down size command and not a resize command. That is, if you have taken an image, it cannot be made larger than the captured file. For example, if you have an image taken with S1 size then, you make it either S2 or S3 both of which have less pixels than the captured image. You cannot resize such an image to M size if you want. Thus, images captured in S3 format cannot be resized at all. RAW files cannot be resized either Saving the modified file: After you have applied the filter or resized the image, the camera will prompt (Picture C11) with an option to save or cancel the changes. To save, choose OK using QCD and press SET. The camera will automatically assign a new file number and save the file. If you don t want the changes to be applied, you can use QCD, choose Cancel instead and press SET. Your original file will remain intact in both the cases. Post-processing in Nikon D7000 Nikon D7000 provides no less than 17 post-processing options known as "Retouch" commands. Many of these are useful as they rectify the defects that might have occurred while you were capturing an image. To access any of these commands, Nikon provides a separate menu called "Retouch" menu that can be accessed. However, there is an easier method. Simply go to the familiar playback screen (even with multiple thumbnails), by pressing the PB (Picture N1). Choose the image you want to post-process and press OK. If you are starting with a thumbnail in the playback screen, then you need to press OK twice. You will now directly go to the Retouch menu (Picture N2). You can scroll using the MCD or MS to highlight the command you want and select it by pressing OK. A large number of commands are available (there are 17 of them!), and I have shown three screens of (Pictures N2, N3 and N4) Retouch commands. Here is the list of the commands with a brief description. We will see in detail how to execute some of these commands and the effect of their application. 1. D-Lighting: This is similar to setting the D-Lighting option of the Shooting menu and is useful for high contrast situations. The command tries to compress the brightness range of the image to accommodate both the bright and dark (highlight and shadow) areas of the image. When you set this in the Shooting menu, the effect is applied while creating a JPEG file the moment you take the picture. However, here you can do this after you take the picture. The advantage is that you can examine the image carefully and depending on the contrast of the capture, this effect can be applied in three strengths-Low (for low contrast), Normal or High (for high contrast). Highlight the level you want using MS and apply it by pressing OK. 2. Red-eye correction: If your image (for example, a portrait taken with flash) shows red eye, this command will help you to eliminate or at least reduce it. This will only work if the camera can detect a red-eye in the selected image. 3. Trim: This is a very useful command that crops the image you have captured. Many times the image can be improved by simply cropping out unwanted parts. First select the image that needs to be trimmed and press OK. This will take you to the Retouch menu. Scroll and select the Trim command by pressing OK. You will now see a yellow box on the monitor. You can enlarge this box by using Z+ or shrink it using Z-. You can also change its aspect ratio by using MCD. The ratios supported are (width: height)-3:2, 4:3, 5:4 (this is the popular 8X10), 1:1 (Square) and 16:9 (HD TV). Once you have the right crop, pressing OK will keep the contents of the image within the box and a new file will be created with this cropped content. The rest of the image will be discarded. 4. Monochrome: This will create a monochrome image. Select the image that needs to be converted into monochrome and choose the Monochrome command from the Retouch menu. You will now see that three options are available to you-Black and White (normal), Sepia (brownish) and Cyanotype (bluish). The latter two try to create the vintage look of yesteryears. Choose the one you want by using MS and pressing OK. You will now see the result of the operation (Picture N8). You can use MSa and MSy for making the image darker or lighter. Pressing OK will create a new file. 5. Filter effects: These are meant for enhancing colour images. In all cases you can preview the effect on the monitor. a. Skylight: This reduces the blue tone in the image. b. Warm: This is similar to Skylight but with a stronger effect. It is especially useful for images taken in mountainous regions where the colour tends to be bluish. c. Intensifiers (red, green and blue): These are three separate filters each of which enhances the particular colour. Useful for landscapes, flowers etc. d. Cross screen: This is similar to using the popular "star burst" filter. It works best when there are point light sources. You can get the right effect by choosing a number of parameters. e. Soft: Creates a soft-focus effect similar to using a soft-focus optical filter. It is useful for portraits. 6. Colour balance: This changes the colour balance of the image. Using MS will increase blue, MS will increase amber, MSa will increase green and MSy will increase magenta. Pressing OK will create a retouched copy. An interesting aspect of this command is that coloured histograms will appear to help you with amount of colour balance being applied. 7. Image overlay: This command works only with RAW files (these have an extension .NEF). This allows two RAW images to be merged together to create a multiple exposure. Since you are starting with RAW the resulting image will be of high quality. Here you can select two images and the camera will overlay them. Not only that, you can even adjust the gain (which is actually the exposure) of each image to get a good blend. 8. Resize: It is used to create an image that is of a smaller size than the original but it cannot resize the image to a bigger size with more pixels. One of the interesting aspects of this command is that you can resize more than one image at a time. The following sizes are supported: Canon 60D2.5MP 1920 x1280 1.1MP 1280 x 856 0.8MP 960 x 640 0.3MP 640 x 424 0.1MP 320 x 216 9. Quick retouch: This is a sort of one shot command that simultaneously adjusts three things-saturation, contrast and D-Lighting. You can apply this in three strengths-Low, Normal and High This command is useful when you want to post-process an image quickly. 10. Straighten: This is an extremely useful command that corrects a very frequent mistake made by photographers-that is, inclined horizons. This happens when you hold the camera inclined (one side of the camera lower than the other). You can correct this mistake easily. First select the image that needs the correction and choose the Straighten command form the Retouch menu (Picture N3). You will now find that a grid appears to help you with the alignment. A scale also appears in the bottom on the monitor (Picture N9). Each division represents one degree of rotation. Pressing MS will rotate the image 0.25 degrees in the clockwise direction and pressing MS will rotate the image 0.25 degrees in the counter clockwise direction. Press MS or MS till you get the result you want. Pressing OK will save the result as a new file (Picture N10). 11. Distortion control: Due to defects in the lenses, straight lines appearing (especially those at the edges). This command is meant to correct such distortions. If you use a G or a D series Nikon lens, then the camera can correct the distortion automatically since it knows the amount of distortion present in the lens. This correction can be applied manually also. Color outline: This command creates an outline sketch of the photograph so that you can use it as a template for painting later on. The effect can be previewed. Color sketch: This creates a copy of the photograph that resembles a sketch made with colour pencils. Perspective control: Often photographers tilt the camera upwards to accommodate tall buildings. The result is that buildings look as if they are leaning backwards. This is often called "distortion" but in the true optical sense it is not distortion (you have just read what distortion means). The correct explanation is that the effect is due to "perspective". This command allows you to correct that "leaning" to a great extent or even completely depending on the extent of error. This is a very useful command. Miniature effect: This works exactly like the filter already described under the Canon 60D section (Pictures C8 and C9). Side-by-side comparison: This command is used to compare a postprocessed (retouched) file with the original. Saving the modified file: After you apply any post-processing command in a Nikon D7000, you can save the modified image file by pressing OK. The camera will automatically give a new file name while saving it. If you don t want the changes to be applied, you can press PB (Picture N1). This will revert to the unmodified image. You can also abort the operation by pressing Menu. This will take you back to the menu screen. Important: Remember that your original image is always kept intact. So, in case you did not like the post-processing effect you can start afresh again. A neat touch is that when you playback any image that has been post-processed (retouched), an icon will appear on the screen (Picture N6). This will inform you immediately that you are looking at a retouched image. Also note that you can even post-process an image that has already been post-processed (with certain limitations)! You have seen how many postprocessing commands are available to you in your DSLR. This is almost like having a mini-editing package built into your camera! While these commands will not rival a full-fledged editing program running on a computer, they can do many tasks easily without you ever touching a key board. These commands are not a substitute for a sophisticated post-processing program but can be useful for doing minor corrections and adding special effects. They are also the only way out if you are totally against postprocessing using a computer.

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