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Difference between revisions of "Simple Image Editing, Cropping Suggestions"
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Simple Image Editing, Cropping Suggestions (view source)
Revision as of 21:49, 14 September 2023
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<code>''Nowadays, 16:9, or the widescreen format is the most popular one but keep in mind that anything else but a TV, most display, projectors, require a different aspect ratio. Sometimes your platform will adjust your image, at other times you have to process the image yourself. It is advisable to experiment with different aspect ratios.''</code> | <code>''Nowadays, 16:9, or the widescreen format is the most popular one but keep in mind that anything else but a TV, most display, projectors, require a different aspect ratio. Sometimes your platform will adjust your image, at other times you have to process the image yourself. It is advisable to experiment with different aspect ratios.''</code> | ||
=== | == Flipping, Mirorring, Rotation == | ||
Flipping, mirorring and rotation are highly common editing operations requ | |||
Your pictures may need to be flipped vertically or horizontally when you want to show a different position of your subject or show a different scene arrangement. Fli | |||
===Light, colour, contrast adjustments== | |||
Ideally, your image should have the best brightness, contrast and colour aspect. Unfortunately, it frequently occurs that some processing is required to show particular images in the best way. This requires processing in dedicated image editors, whether free such as Gimp, Krita, or paid, as Adobe Photoshop. Simple processing is best used with non-commercial applications as such operations do not require expensive software and it is better to be aware of general editing principles rather than a single approach to fixing. | |||
Keep in mind that it is always less suitable to post process pictures than to have good ones from the start. Most pictures will probably end up underexposed, or darker than they should. This requires an auto-brightness adjustment or a manual one, applied with care to not leave any part of the picture overblown or unrealistically bright. On too bright or washed-out pictures, you reduce the brightness slightly to reduce the impact of too harsh light cast on different areas. | |||
It is advisable to control brightness and contrast at the same time, and try to increase contrast slightly when making editing. Keep in mind that too much contrast accentuates in a unrealistic way the picture and it is not preferable. Slightly increasing contrast and light by low amounts, in the range of 5-10% generally ends up with slightly more appealing pictures. To have a good grasp of the result, always compare your initial picture with the resulting one at different values, and note which one ends up with the best compromise. | |||
Saturation adjustments are even more difficult to carry and more subjective. As a rule of thumb, you avoid overly bright or intense colours or ones that are way too subdued. However, always take note that increasing saturation also increases the chance of various artifacts and unwanted parts of the picture to stick out much more than you would like. This is why saturation should be generally left as is. As a rule of thumb, when increasing brightness in a picture, you can slightly bump saturation by a few percents to avoid an overly drab image. | |||
<code>''Keep processing to a minimum and only use sparingly the brightness and contrast adjustments. If your software has auto settings, try to use them for quick results that do not end in hard to understand solutions. Experiment as much as possible with different settings to improve your skills and learn to compensate for your camera's shortcomings''</code> | |||
===Tone or white balance adjustments== | |||
In much less frequent situations, you may need to resort to tone or white balance adjustments. This might be the case when using indoor light cast towards your subject. As the light level is already low and the light source itself has a colour spectrum that is optimal to the human eye, it may look entirely different to your camera. If you cannot increase enough the light levels and you need to make snapshots in this condition, always expect post-processing operations in your image editing software. | |||
The purpose of tone or white balance adjustments is to simulate a more balanced colour appearance, particularly when having a white element in your scene. When such elements can be spotted, it is expected to have a proper colour balance. Applying an automatic colour balance can generally work very well. If you do not have an automatic white balance feature in your graphics editing suite, you can probably aim for a 5500 Kelvin one, as a good compromise, unless you really want to emphasize warm tones. Try different combinations until you end up with a white element that is neither too yellowish or blueish. | |||
<code>''Except on indoor scenes and very low light situations, you will rarely need white balance adjustments or processing. When you do require such operations, it is great to know what you can do in advance, to save time on subsequent activities. All white balance issues can generally be solved, at the slight expense of reduced colour saturation.''</code> | |||
==Brightness adjustments== | |||
===Complex effects=== | |||
Complex effects may be applied to images and result in interesting effects but keep in mind that some effects can be effective enough when used reasonably. Generally aim for edits that affect an image the least but can create a very good effect. Flipping images horizontally or vertically, mirroring them, rotating them at right angles such as 90 degrees or 270 degrees, can result in images that are surprising to your audience. Rotating pictures at arbitrary angles may be less straightforward, as it requires additional cropping to end up with usable pictures. However, such operations may be useful when you want to straighten an image or show a different perspective on the subject. | Complex effects may be applied to images and result in interesting effects but keep in mind that some effects can be effective enough when used reasonably. Generally aim for edits that affect an image the least but can create a very good effect. Flipping images horizontally or vertically, mirroring them, rotating them at right angles such as 90 degrees or 270 degrees, can result in images that are surprising to your audience. Rotating pictures at arbitrary angles may be less straightforward, as it requires additional cropping to end up with usable pictures. However, such operations may be useful when you want to straighten an image or show a different perspective on the subject. | ||