Digital Photography Tips
Photography Exposure Tips for Harsh Lighting Conditions
Browse these digital photography tips to learn easy ways to improve your digital photography when the light is less than ideal
Issi, who submitted "Spiral" for a photo critique, asks for help with this dilemma:
"In SA [South Africa] we have very harsh light, with a lot of glare, strong shadows, and a lot of haziness. When taking photos of wild life and landscapes the contrast is low, and one has to adjust the contrast manually. Is there any help! Is there another solution besides using a filter!"
Issi indicates a number of factors that create harsh lighting conditions. One of these is directness of the sunlight, which is related to latitude, season, and time of day. Direct sunlight is responsible for glare and harsh shadows, both high-contrast situations.
To put this request in perspective for other ImproveYourDP readers, Cape Town, South Africa is at about 34° south latitude. Only 10° away from the tropics, mid-day sun will get to be quite high and quite bright. You'll find similar sunlight in Sydney, Australia in the southern hemisphere. In the northern hemisphere, equivalent locations (at least for sunlight) include Los Angeles and southern North Carolina in the USA, and Casablanca, Morocco, going back to Africa. Each of these locations should have comparable directness of sunlight given the same relative time and season.
But, other factors come into play when assessing quality of light. Consider the impact of local climate, including precipitation, haze or dust, and (especially in Los Angeles) man-made smog. These all tend to diffuse light and reduce contrast, even if the conditions are very bright.
Depending upon the character of the harshness, a number of approaches come into play, some compositional, some exposure-related, some time-related, and some dependent upon filters. These digital photography tips will help to get you started.
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Digital Photography Tips for
Exposure - Harsh Light & Composition
Sun Bright? Shoot Tight
Bright sunshine creates harsh shadows that you want to minimize.
Get close to your subject, either physically or with a long lens, and select an area that has the least amount of distracting shadow, then expose for the area that is most free from shadow.
Digital Photography Tips for
Exposure - Harsh Light & Exposure
Sun Bright? Backlight
When it's impossible to avoid harsh shadows in a composition, the alternative is to shoot into the sun, placing your subject mainly in evenly-balanced shadow.
On a bright day, this will leave your subject well lit, although a bit flat in contrast.
Instead of extremely dark shadows, backlit situations require you to watch for bright highlights. Arrange your composition to minimize those, as well as to add interest, then adjust your exposure for the non-highlighted areas (but, check your histogram or highlight warning indicator if you wish to avoid totally blowing out your highlights. Since the contrast in this situation will be low, plan on making an adjustment in your favorite photo editor after the fact, knowing that contrast adjustment is easy to make in most editors.
One risk in backlit situations is a background that is too bright. You have two choices here: frame your composition so that the bright background is mostly cropped out or, better yet, arrange your composition to have a darker background.
Harsh Light? Use Fill Light
You've crept within range of your favorite bird, but he's turned his head to the bright sidelight, leaving the beak and closer eye in shadow. This is the perfect scenario for using fill flash.
Fill flash will lighten the shadows and put a sharp, bright highlight in the eye.
If your subject is tame (a favorite pet, your spouse, or an inanimate object), instead of using fill flash, try using a reflector to bounce a more subtle light into the shadows for a softer look than delivered by flash.
Harsh Light? Use Filtered Light
This digital photography tip applies for "tame" subjects in bright light when no shade is available. Place a light filter between the sun and your subject.
For the filter, use a diffusion panel, a satin white umbrella, or a collapsible light disk. You can find examples from vendors such as Lastolite or Photoflex.
One plus of this approach over finding shade is that it minimizes the contrast between your subject and the background, for a better overall exposure.
Use Haze to Accentuate Depth
In America, the Great Smoky Mountains get their name from the fog that hangs over the mountains. When viewing peaks at increasing distance, they appear more and more diffuse, with muted colors. Artists refer to this phenomenon as "atmospheric perspective" because the natural effect of the atmosphere accentuates the sense of depth in the scene.
When haze, mist, fog, or smog rob your scene of definition, look for a closer subject to highlight in your image. Expose for (and focus on) that close subject, letting the softer, hazier background fade out for the greatest possible sense of depth.
Digital Photography Tips for
Exposure - Harsh Light & Time of Day
Avoid the Harsh Light Times
OK, I guess that "avoidance" doesn't really answer the question about how to confront harsh light, but finding times with less harsh light is a valid strategy...and one of the top digital photography tips.
There is a lot to be said for photographing in those "golden hours" around sunrise and sunset, but one advantage relative to dusty, smoggy, and hazy light conditions is that the golden hour warmth turns all of that fuzziness into reds, oranges, and yellows that add drama that is hard to find when the sun is higher.
Digital Photography Tips for
Exposure - Harsh Light & Filters
Reduce Glare with a Polarizing Filter
Harsh light can produce distractingly bright reflections off of water, foliage, glass, crystalline rocks, and similar, non-metallic shiny surfaces. Reflected light rays are polarized by these surfaces, which allows a polarizing filter to effectively block most of the reflection.
Use a circular polarizing filter, screwed into the front of your lens, to reduce glare from these objects. Once your image is composed, rotate the filter until the image shows the least amount of glare. "Circular" is an important characteristic when shopping for polarizing filters, as older, "linear" filters don't work effectively with many camera metering and focus systems..
If you have a point-and-shoot camera that does not accept filters, use a lens from your polarizing sunglasses. Just hold one eyepiece in front of the camera lens and preview the results on the LCD as you rotate the sunglasses.
Intensify the Sky with a Polarizing Filter
Another characteristic of polarizing filters is to enhance colors. This is particularly useful for increasing the saturation of blue skies and other colors. In most situations, the increased color saturation will also improve overall image contrast, whether between sky and foreground or between sky and clouds.
This works best when the sun is at 90° to your subject. That is, keep the sun to your left or right for most impact. Then, when you have composed you image, rotate the polarizing filter until you get the best saturation and contrast.
Balance Sky and Foreground with a
Graduated Neutral Density Filter
When photographing landscapes, you have probably noticed that is difficult to get good exposure for both the foreground landscape and the sky - cameras simply do not have enough dynamic range to capture detail across such a wide range of light conditions. This is where graduated neutral density filters come to the rescue.
"Grad" filters, as they are more easily called, are clear on the bottom half. The upper half is darkened with a neutral material that only impacts the brightness of your image, not the color. The amount of density varies, depending upon the filter, but 2 stops is a good starting point. The boundary, or transition, between the clear and dark halves is fuzzy so that you don't get a hard edge. The length of the transition may be shorter (designated "hard") or longer ("soft"), depending on the options offered by the filter vendors.
The idea in using these filters is to reduce the amount of light coming from the sky so that you can expose for the foreground and still retain sufficient color and detail in the sky (or vice-versa). Once your filter is attached to the lens, align the transition with the boundary between sky and land. Meter for the area of the image that you want to be best exposed. Or, meter for the overall image with an intent to bring out the best balance of sky and land using your favorite photo editor.
If you can live with a 50/50 split between sky and foreground, then use a screw-on style filter (easier and less expensive) - you can crop the image later if 50/50 doesn't do it for you. You can rotate grads so that the line of transition aligns with your horizon or terrain.
If you want ultimate control, then look for the more expensive filter holders that take rectangular filters, and buy filters of varying density that you can use singly or in combination for attaining the best balance between sky and foreground.
Reduce Haze with a UV Filter
Ultraviolet (UV) rays in the atmosphere introduce a slight haziness into photographs. This is not the haze that you see with your own eyes, but haze that film and digital sensors pick up because they are sensitive to the shorter UV wavelengths that our eyes cannot pick up. UV radiation also tends to give a slight blue color cast to images. As altitude increases, so does the amount of UV radiation that may impact your pictures.
UV filters are intended to cut through that haze as well as reduce any blue impact on your images. If you experience haze in your images that you didn't see when taking the picture, or if images come out bluer than you expect, a UV filter may help when taking pictures in similar circumstances.
Because these filters have good transparency, some photographers always use them as a means to protect their front lens elements from dirt and scratches.
You've read a few digital photography tips that helped me improve my digital photography. Now it's your turn. Do you have a favorite digital photography tip?
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