Mamiya DM System Instrukcja Użytkownika Strona 174

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Chapter 1 - Basic info
166
Chapter 11 - Using the software
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Luminance noise exists in every digital image. This noise is caused by the light sensitive chip,
regardless of ISO. Normally this noise is more visible at high ISO values.
Higher Noise levels at high ISO values are caused because the signal has been amplified.
Luminance
Removes the pattern-like noise often present in shadow areas. Best practice is to set Luminance to
25, even for low ISO images. Images with noise that is displeasing increase the setting value and
check the effect in the Viewer at 100% magnification.
Color
Removes color noise from images, typically noticeable as subtle green/ magenta patterns. It is very
difficult to recommend specific settings as noise varies from camera to camera, but the program
defaults provide a good starting point. The viewer provides a clear view of the effect of filters on
image noise.
How to remove noise from images
Noise should be removed from the images using a combination of the above tools. Capture One
automatically applies some noise reduction to images, based on the ISO and exposure data from the
camera that is contained in the image metadata. The default settings provide a good starting point
for further adjustments.
Removing noise from Capture One
Capture One allows the removal of luminance and color noise from images using the color and
luminance noise reduction sliders.
Both sharpening and noise reduction tools allow the user to create presets, making it extremely
easy to create regular settings for a specific camera or type of image. Simply click the preset
button and select ‘add presetto create a new preset.
Use the default setting (applied automatically by the software) and then zoom into 200% to fine
tune settings for an image if you have a group of similar images, apply the resulting setting to all
images or create a new preset.
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