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High contrast

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High Contrast Example
Here's a difficult lighting situation, the object we are most interested in is the fireball which, of course, is not there until the instant that you press the shutter.

 


If the subject of the photo happens to be pure white, to take an extreme example, and the photographer places it in front of a background that is pure black, then the result is what is known as high contrast.

High Contrast
High Contrast is a lighting descriptive term that characterizes a wide disparity between the key (or main) light and the fill light (which can be completely absent).

High Contrast
Highlights
Small, very bright part of image or object.

HIGH CONTRAST - An image that is high in contrast (as opposed to a "flat" image), wherein the negative, slide or print contains a wide density range.

High Contrast 3.0″ LCD
The high contrast LCD is a considerable benefit in bright light. The Wide View Filter on the LCD means that the camera can be pitched at various shooting angles to enable framing of awkward shots.

high contrast film
a litho film that develops out to either black or to a transparent area with no intermediate gray.
high density polyethylene (HDPE)
a thermoplastic made from hydrogen and carbon atoms combined in the ethylene monomer C4H4.

HIGH CONTRAST-A term expressing a relationship of image tones in which highlights and shadows are represented by extreme differences of density.

High contrast tone curve loses highlight & shadow detail - cannot be changed in-camera
Exposure inconsistencies (generally overexposure) using default settings
Purple fringing
3-shot limit in continuous mode ...

High contrast is often a big problem with available light and this presents special challenges for either slide film or digital capture. Typically, corrections require more than one tool.

High contrast film that produces negatives with intense black & whites and very minimal mid tones.
Related Terms
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High contrast developer - solutions used to produce high contrast images.
High key - photograph which contains large areas of light tones, with few middle tomes or shadows.

In high contrast settings, some cameras let you decrease contrast at the time you take the picture.
Hard to Meter Scenes ...

New High Contrast LCD
The FinePix F70EXR is fitted with an improved high contrast 230K-pixel 2.7' LCD. The high contrast LCD is a considerable benefit in bright light, and means that the camera can be pitched ...

For high contrast scenes having a 2-stop and 3-stop ND filter allows me to fit the dynamic range of the scene into a single image. They scratch more easily than I'd like, but I don't know of any better ND filters than these.
Flash Cards ...

Create a high contrast lith conversion in Photoshop Elements
Remove grey tones to create a high-contrast, arty lith image using Photoshop Elements in just 5 minutes
Techniques & tips ...

Moderately-high contrast, medium value, composition using fully saturated hues. High contrast, medium value, composition using shades, tints & various saturation levels.

Create a High Contrast, Artistic Portrait (Tutorial)
This tutorial will teach you how to take your photos and transform them into a high-contrast work of art.

Lith film
High contrast film that produces negatives with intense black & whites and very minimal mid tones.
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More Photographic Terms ...

If you are in a high contrast situation with wide differences in lighting, you many find that not everything can be recorded the way you'd like to be able to, ...

Kodalith: A high contrast black and white film made by Kodak, used also as a special effect film in the darkroom.( ultra high contrast images) ...

As you can see a high contrast is in fact often more important than high resoltion because "washed out" colors are usually much less acceptable.

Lith film
Very high contrast film, which gives pure blacks and whites and no grays. Lith paper is a very high contrast paper, though it does normally give some grays with all but the most contrasty negatives.

Fuji NPZ is said to be better on high contrast lighting because of it's low contrast (portrait film), so you should try it. Warning: When underexposed 1 stop (1600) it gets grainy and difficult to color correct.
Has 4th color layer.

The colour version of the above images seems very high contrast with a large tonal range, but in truth we can see that its overall tonality is the same, broadly speaking.

Low Key Low key pictures emphasize the black or darker tones, mostly with hard high contrast lighting being used. To create contrast, a relatively small areas are usually brightly lit. Jump to Top    Back to Previous Page
M ...

Tricky Lighting Situation #3: High Contrast From Strong Sidelight - Sunrise and sunset are the best times to photograph scenics yet the strong sidelight creates high contrast situations of bright highlights and deep shadows.

It was a small strobe accounting for the high contrast in the image and dark shadow on the background. Because Dennis was so close to the white background, the background records an accurate white tone.

A place along the edge, that has very high contrast, has been chosen. On the petal side of the edge, the tone is almost pure white. While the background side of the leaf is almost pure black.

Type 51, ISO 640 print, ISO 80 negative, black and white (very high contrast print, reusable negative)
Type 52, ISO 400 black and white (wide tonal range)
Type 53, ISO 800 black and white
Type 54, ISO 100 black and white ...

Slow film has fine grain (and hence high definition), high contrast but low latitude. (Latitude is the amount by which a film can be over or underexposed and still produce a reasonable image).

High contrast scenes and bright snow throw off your auto exposure. Cold weather and condensation can damage your equipment and batteries drain faster.

The most noticeable thing is that cheap consumer film of the supermarket variety has inconsistent colour and tends to be of high contrast.

In this procedure, devised by Berry27 and rediscovered by Rees,199 one soaks high contrast paper in developer and then exposes it under the enlarger.

There is a software technique for combining exposures to get the most from a scene with high contrast values. This involves bracketing exposures, and it is something we will cover in detail in our Tips section.

The most noticeable thing about FromEx was the high contrast and saturation. Only a slight Cyan cast comparable to EZPrints and the Kodak reference print. The Auto Exposure test images looked fine.

High contrast ratios of 1000:1 and up in DLPs and LCOSs deliver accurate detail and render saturated blacks, while a ratio of 400:1 is standard for LCD technology and also can deliver the same attributes as a DLP's higher number.

High contrast implies dark black and bright white content; medium contrast, a good spread from black to white; low contrast, a small spread of values from black to white.

Back light pictures show very high contrast. You must choose between two different exposure possibilities. If you decide to properly expose the bright picture parts, the shadow parts become mostly black silhouettes.

Low contrast originals won't need flashing, but high contrast images will be produced too contrasty unless you fog the film to some degree. Slide duplicators are the most expensive method of getting duplicates.

A high contrast image has a narrow range of relative brightness values. As you increase contrast in an image editing software, the dark colors become darker and the light colors become lighter.

When we talk about contrast in photography, it's usually in terms of dark versus light, low contrast versus high contrast. In black-and-white photography, the contrast between white, grey and black elements is called tonal contrast.

High contrast involves not only an extreme Brightness Ratio but also few gray tones. Low contrast has an expanded range of intermediate tones with limited pure blacks and whites.

High contrast, for example, denotes larger differences with blacker blacks and whiter whites.
Continuous tone
An image containing the illusion of smooth graduations between highlights and shadows ...

With high contrast, change in the line width is minimized, even when illumination output energy varies, which typically leads to error, or exposure is uneven on a wafer.

Caustic potash
High alkaline used in high contrast developing solutions to encourage dynamic development. Highly corrosive and poisonous.
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A measure of the rate of change of brightness in an image; high contrast suggests content consisting of dark blacks and bright whites; medium contrast implies a good spread from black to white; ...

Instead of simply going for broad light areas, such as overcast days or evenly lit rooms, begin negotiating areas that have a much more high contrast light.

Especially, when you shoot a lot of night scenes or high contrast images, these are perfect candidates for black and white conversion.

5 cm (3.0") PureColor II G LCD display is perfect for framing and playback, with a fine 461k dot resolution that offers high contrast and excellent colour reproduction.

Chromatic aberrations (CAs) manifest as unwanted colour banding, especially around high contrast edges. They occur when a lens bends some colours of light more than others, resulting in disperison. Lenses are designed to minimise CAs.

Low contrast images will have a narrow basis with many pixels stacked together in the midtone area, while a high contrast image will have high levels of black and white and fewer grays. RGB images have a separate histogram for each color.

-Posterization - photographic technique using a number of tone separated negatives which are printed on high contrast material. A master negative is made by printing these in register.

Once you've taken steps to ensure you have the best exposure possible, you can take additional steps to render images with high contrast in a way that's more pleasing to the eye.

If faced with a high contrast scene it is better to slightly underexpose than overexpose if you wish to retain the most shadow details in your photo.
You should do this sometimes, even when shooting in RAW.

Can be a complex subject! In simplest terms high contrast = high gamma and low contrast = low gamma, but there's a lot more to gamma than this.
Gamma Correction ...

Look for an interesting object with high contrast.
2
Examine the object for patterns or texture.

Use a low-numbered or soft paper with a high contrast negative to get a print that most closely resembles the original scene. Use a high-numbered or a hard paper with a low-contrast negative to obtain a normal contrast print.
(see Multigrade) ...

Diffused or indirect light produces softer tones. For dark shadows and high contrast difference between light and dark use direct light. On the other hand, for tones of gray and softer looks use a diffused light.

How close to zero the MTF must drop depends on a number of things such as the brightness of the image and the nature of the target pattern, but 1% (0.01) isn't an unreasonable value for a bright image and a high contrast bar pattern.

See also: Contrast, Image, Camera, Photograph, Light