Silverlog Flash vs PicResize

Silverlog Flash calculates flash exposure using guide numbers — the fundamental relationship between flash power, distance and aperture. HOW IT WORKS Choose what to solve for and enter the other two values. Find the aperture for a given flash-to-subject distance, the maximum distance for a given aperture, or the guide number from a known distance and aperture. Adjust ISO to see how sensitivity affects your working range. FEATURES • Guide number to aperture calculation • Guide number to maximum distance calculation • Guide number from distance and aperture • ISO adjustment • Metric and imperial distance units • Works offline — no internet connection needed • Clean, focused interface • Dark mode support USEFUL FOR • Manual flash photography without TTL • Working out flash-to-subject distance for off-camera flash • Understanding your flash's effective range at different apertures • Film photographers using manual flash units Part of the Silverlog photography toolkit. No account required. No data collected.

Need to fix an image or ID photo size that does not meet the requirements? PicResize lets you easily change an image to any custom resolution in just a few steps. Lock the aspect ratio to keep images proportional, and automatically sync width and height while resizing. You can also export images as JPG or PNG, and adjust JPG compression quality to reduce file size while keeping the right balance of clarity and size. Whether you are preparing a photo for upload, editing an ID picture, or just resizing images for everyday use, PicResize gets it done fast. Key Features Custom image resolution Lock aspect ratio to prevent distortion Export as JPG or PNG Adjustable JPG compression quality Save directly to your photo library Unlimited Usage