A Better Way to Bulk Denoise in Lightroom Classic

Lightroom Classic has more than one way to bulk denoise images, and the method you choose affects quality. When ISO varies across a shoot, a faster shortcut can quietly cost detail.

Coming to you from Anthony Morganti, this practical video walks through a careful approach to bulk denoising in Lightroom Classic. Morganti starts with a folder full of images shot at different ISOs, including frames at ISO 640 and others at 12,800. He doesn’t jump straight to Denoise. He culls first. Using Caps Lock to enable auto advance, he moves quickly through images with the P, U, and X keys to flag picks, leave rejects unflagged, or mark them for deletion. After that, he filters the catalog to show only the flagged images and sorts them by ISO using the toolbar. That step alone changes how you think about batch noise reduction.

Sorting by ISO exposes something most people ignore. Not every image needs Denoise, and not every file needs the same strength. A frame shot at ISO 64 doesn’t demand the same treatment as one shot at 6,400 or 12,800. Morganti selects only the higher ISO images he wants to process. Then he goes to the Develop module and turns on Auto Sync. Before applying Denoise, he zeros out sharpening, color noise reduction, and luminance noise reduction across the selected files. Only then does he trigger Denoise, as it takes longer. In his example, Lightroom estimates 16 minutes for 34 images. You wait, but each image is processed independently.

There’s another common method he demonstrates but avoids. You apply Denoise to one active image, click Sync, check only the noise-related options, and synchronize the rest. Many claim this is about 30 percent faster. Morganti suspects Lightroom copies the noise reduction settings from the first image instead of analyzing each file individually. With mixed ISO values, that shortcut can apply the wrong strength to some frames. You might not notice at first glance, but fine detail and texture can suffer, especially in wildlife, event, or low light work where ISO swings from shot to shot.

He also clarifies how Sync and Auto Sync actually behave. With multiple images selected, one image remains active. If Auto Sync is off, adjustments affect only that active frame until you manually sync. When Auto Sync is on, every change applies instantly to all selected images. Understanding that difference helps you avoid accidental global edits. It also unlocks a second workflow advantage. After denoising, Morganti groups similar images, such as bursts of a bird or a sequence of a bighorn sheep, selects them together, and applies edits in bulk. Exposure, color adjustments, even subject masking can sync across the selection. Lightroom builds masks for each frame, which takes a moment, but the edits propagate consistently.

This approach suits wildlife sessions, zoo visits, or any shoot where you fire multiple frames of the same subject under similar light. It also works for events when you break the job into small clusters instead of trying to batch hundreds at once. Check out the video above for the full rundown from Morganti.