Graphics Programs Reference
In-Depth Information
Rendering intent
Lightroom exports use the Perceptual rendering intent (and Black Point
Compensation) to perform color space conversions; you can't change this
setting. Sometimes this produces color conversions with less than optimal
results. If you're exporting to jpg, you can use the Print module instead, which
allows you to choose Relative rending intent. Many images will print best using
Relative; see Chapter 6 for more information.
5
(For the most control over color space conversions use Photoshop, where you
can choose the rendering intent and many other conversion settings.)
Maintaining the most possible data
When exporting i les from Lightroom to be processed in other sot ware, I
always use ProPhoto and 16-bit. h is ensures the maximum amount of data
from the raw capture will be preserved in the rendered i le.
IMAGE SIZING
When you're working on photos in Lightroom you're always working at the
i les' native resolution. During an export, you have the option to resize the
exported i le. h e Export dialog box provides several controls for this; see
Figure 5-10. (Note that you can't resize i les being exported as Original or dng;
you can only resize for tif , psd or jpg.)
Figure 5-10
Remember that resizing a photographic image always requires resampling:
pixels must either be created or discarded. (h is is also referred to as
interpolation. ) Resizing in either direction will result in some loss of image
data, insignii cant as it may be for the circumstances.
For enlargements ( upsampling ), new pixels are synthesized from the existing
ones. In reductions ( downsampling ), pixels are eliminated and the values of the
remaining pixels are averaged to produce the i nal image.
Lightroom uses resampling algorithms similar to Photoshop's, usually
with equivalent quality in the results. (Actually, in my tests, I've found that
Lightroom's resampling is ot en superior to Photoshop's.)
Search WWH ::




Custom Search