Features That Support 32-Bpc Hdr Images; Merge Images To Hdr - Adobe Photoshop CS6 User Manual

Secure the camera to a tripod.
Take enough photos to cover the full dynamic range of the scene. You can try taking at least five to seven photos, but you might need to
take more exposures depending on the dynamic range of the scene. The minimum number of photos should be three.
Vary the shutter speed to create different exposures. Changing the aperture changes the depth of field in each exposure and can produce
lower-quality results. Changing the ISO or aperture may also cause noise or vignetting in the image.
In general, don't use your camera's auto-bracket feature, because the exposure changes are usually too small.
The exposure differences between the photos should be one or two EV (exposure value) steps apart (equivalent to about one or two f-stops
apart).
Don't vary the lighting; for instance, don't use a flash in one exposure but not the next.
Make sure that nothing is moving in the scene. Exposure Merge works only with differently exposed images of the identical scene.

Features that support 32-bpc HDR images

You can use the following tools, adjustments, and filters with 32-bpc HDR images. (To work with more Photoshop features, convert a 32-bpc
image to a 16-bpc or an 8-bpc image. To preserve the original image, create a copy with the Save As command.)
Adjustments Levels, Exposure, Hue/Saturation, Channel Mixer, Photo Filter.
Note: Although the Exposure command can be used with 8- and 16-bpc images, it is designed for making exposure adjustments to 32-bpc HDR
images.
Blend Modes Normal, Dissolve, Darken, Multiply, Lighten, Darker Color, Linear Dodge (Add), Lighter Color, Difference, Subtract, Divide, Hue,
Saturation, Color, and Luminosity.
Create new 32-bpc documents In the New dialog box, 32 bit is an option in the bit depth pop-up menu to the right of the Color Mode pop-up
menu.
Edit menu commands All commands including Fill, Stroke, Free Transform, and Transform.
File Formats Photoshop (PSD, PSB), Radiance (HDR), Portable Bit Map (PBM), OpenEXR, and TIFF.
Note: Although Photoshop cannot save an HDR image in the LogLuv TIFF file format, it can open and read a LogLuv TIFF file.
Filters Average, Box Blur, Gaussian Blur, Motion Blur, Radial Blur, Shape Blur, Surface Blur, Add Noise, Clouds, Difference Clouds, Lens Flare,
Smart Sharpen, Unsharp Mask, Emboss, De-Interlace, NTSC Colors, High Pass, Maximum, Minimum, and Offset.
Image commands Image Size, Canvas Size, Image Rotation, Crop, Trim, Duplicate, Apply Image, Calculations, and Variables.
View Pixel Aspect Ratio (Custom Pixel Aspect Ratio, Delete Pixel Aspect Ratio, Reset Pixel Aspect Ratio, etc.)
Layers New layers, duplicate layers, adjustment layers (Levels, Vibrance, Hue/Saturation, Channel Mixer, Photo Filter, and Exposure), fill layers,
layer masks, layer styles, supported blending modes, and Smart Objects.
Modes RGB Color, Grayscale, conversion to 8 Bits/Channel or 16 Bits/Channel.
Pixel Aspect Ratio Support for square and non-square documents.
Selections Invert, Modify Border, Transform Selection, Save Selection and Load Selection.
Tools All tools in the toolbox except: Magnetic Lasso, Magic Wand, Spot Healing Brush, Healing Brush, Red Eye, Color Replacement, Art History
Brush, Magic Eraser, Background Eraser, Paint Bucket, Dodge, Burn, and Sponge. Some tools work with supported blend modes only.

Merge images to HDR

The Merge To HDR Pro command combines multiple images with different exposures of the same scene, capturing the full dynamic range in a
single HDR image. You can output the merged image as a 32-, 16-, or 8-bpc file. However, only a 32-bpc file can store all the HDR image data.
HDR merging works best when photos are optimized for the process. For recommendations, see Take photos for HDR images.
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