Join Seán Duggan for an in-depth discussion in this video Converting from 32 bit to 16 bit, part of Enhancing Night and Low-Light Photos with Photoshop.
…The 32 bit files created by the merged HDR Pro command are great for…blending the tonal range of multiple files taken with different exposure settings.…The only drawback is that there is limited Photoshop functionality with 32 bit files,…and there are some commands and adjustments that will not work on them.…In order to access the most common of Photoshop's features that you would…use for photo editing, you need to convert the file from 32 bits down to 16 bits.…So I've saved the file in the Photoshop format.…
And the primary thing you're going to run into with a 32 bit…file is that there are several adjustment layers that are unavailable to you.…So if I come to the Add Adjustment Layer button and click that, you can see that…I've got about half of the available adjustment layers not available to me.…So to get around that,…I need to bring this file from 32 bits down to either 16 or 8 bits per channel.…Now, I'd rather go to 16 bits because that's going to preserve a lot more of…the tonal information, which I'm going to take advantage of in making further edits.…
In this course, photographer and educator Seán Duggan explores a range of post-processing techniques aimed at expanding your creative options for night and low-light photography—and even "shooting" stars. He'll begin in Camera Raw for general enhancements (white balance, tonal and contrast adjustments, and noise reduction) and then turn to Photoshop to capitalize on its Merge to HDR feature, which can create spectacular high-dynamic-range images. Last, he includes techniques specifically for star photography: stacking layers to create star trails, removing and replacing blurry stars, and using luminosity masks on photos of the Milky Way.
- Using neutral guides to set white balance
- Applying lens profile corrections
- Reducing noise
- Working with 16-bit and 32-bit HDR images
- Stacking layers and combining exposures
- Improving star photography