I would not suggest using JPEG compression, because it is a lossy form of compression and will result in the loss of detail in the image, which is primarily why you're using TIFF to begin with, to preserve image quality. The larger size for LZW isn't a bug, it's just the way the LZW algorithm works. The LZW compression algorithm was designed for 8-bit images and results in 16-bit images having a larger file size (yes, like 20-30% larger), which explains why the setting in Lightroom only allows for the specification of None or Zip compression.
When using Save As during the save process, Photoshop allows you to choose one of the following compression options: None, LZW, Zip, and JPEG. I'm not sure what the default compression setting is for TIFF files in the "Edit in Adobe Photoshop CC 2019" preference in Lightroom, but I often choose "Save As" in Photoshop and specify the filename manually, such as "20191010_029_Pano.tif," "20191010_029_Stack.tif," or "20191010_029_Edit.tif." This technique also allows me to choose the compression for the TIFF file, but this is where I previously made the mistake of choosing LZW compression. Original pano stitch TIFF file (1.29 GB) versus flattened layers TIFF file with zip compression (335 MB), shown in the Photoshop Layers panel. This step can be a personal preference depending upon whether or not you intend to edit this file again later in Photoshop. The TIFF file format supports layers, so if you don't flatten the image, you'll end up with a huge file. This step is especially important when you have sent multiple photos to Photoshop as layers, such as when doing a focus stack, panorama, or HDR merge. If your settings in Lightroom are to save Photoshop edits as TIFF files, before you exit Photoshop, you should flatten your image by going to the Layer menu and selecting Flatten Image. If you make the same mistakes I did, you end up with a giant TIFF file - a gigabyte TIFF file. The file format Photoshop uses to save the image is determined by your Lightroom settings (more on that below). Photoshop asks you if you want to save the image, which you confirm, and you're back in Lightroom with your Photoshop edited photo next to your previous photo(s). You then do whatever it is that you need to do and then either close the image or exit Photoshop. Selecting one of these opens the photo(s) in Photoshop. The typical workflow, in this case, is that you right-click on a photo in Lightroom, select "Edit In," and then choose one of the following from the context menu:
0 kommentar(er)
