HDR Soft Pro - 3.2 - Macintosh Manual de usuario descargar pdf (Pagina 30)

Photomatix Pro User Manual Page

26

5.4 Dealing with noise

When you process your images using Exposure Fusion, the fused image will tend to show less

noise than the source images. This is because Exposure Fusion works by directly combining

your bracketed photos, and thus averaging out noise.

However, when you create a 32-bit HDR image, your bracketed photos are assembled in linear

space into an image that spans the full range of luminance values captured by the camera. If

the lightest photo of your exposure sequence is not bright enough to expose the shadows of the

scene, then the noise in the source photographs will be transferred to the HDR image. Noise in

the HDR image will then be made more apparent by tone mapping, especially with Details

Enhancer as this tone mapping method increases local details.

Though Photomatix Pro includes an option to reduce noise on the generated HDR image, it is

still always better to avoid noise at capture time as much as possible. There are two tips to

ensure a low noise level:



Tip 1: Set a low ISO setting (ISO 100 or lower) whenever possible



Tip 2: Overexpose sufficiently, ensuring that the lightest image of your exposure

sequence has its shadows in the mid-tones.

5.5 Photomatix Pro and color management

Photomatix Pro supports color management even if RAW files are processed. You should use

the same working space in Photomatix Pro as you use in other image editors (e.g. Photoshop).

Photomatix supports the three most popular working spaces:



sRGB: Used if your images are created only for the web.



Adobe RGB: Popular working space for printing if extremely saturated colors are not

used.



ProPhoto RGB: Wide gamut working space. This should never be used for 8-bit images.

For all JPEG and TIFF files, Photomatix Pro preserves the color spaces of the source files.

1 2 ... 25 26 27 28 29 30 31

Sin comentarios

HDR Soft Pro - 3.2 - Macintosh Manual de usuario Pagina 30