Sony · JPG and ARW
Sony Shutter Count Checker
Check compatible original Sony JPG and ARW files for shutter-count information and view useful EXIF metadata directly in your browser.
Open Sony Tool on 27toolsPhotography Resources
Free camera tools for photographers and videographers.
Whether you are checking a used camera, planning depth of field or working out the storage required for a video shoot, these free browser-based tools provide quick, practical answers without installing additional software.
These tools are built and maintained on 27tools , another independent project by Andrew Ambrose. Selecting a tool will take you to 27tools to use it.
Camera files
Shutter count and camera metadata
Original camera files can contain useful metadata about the camera, lens and exposure settings. Compatible files may also include the camera’s shutter count, which can provide additional context when buying or selling used equipment.
Canon · CR3
Canon Shutter Count Checker
Inspect an original Canon CR3 file for available shutter-count information while keeping access to the full metadata found inside the image.
Open Canon Tool on 27toolsNikon · NEF
Nikon Shutter Count Checker
Read compatible Nikon NEF maker-note data to find an available shutter count and inspect useful camera and exposure metadata.
Open Nikon Tool on 27toolsFujifilm · RAF
Fujifilm Shutter Count Checker
Check an original Fujifilm RAF file for available shutter-count information and inspect the metadata recorded by the camera.
Open Fujifilm Tool on 27toolsBefore the shoot
Photography and video planning
Use these calculators to plan focus, motion and storage before a photography or video shoot.
Photography · Focus planning
Depth of Field Calculator
Estimate near and far focus limits, total depth of field and hyperfocal distance using your camera format, focal length, aperture and focus distance.
Calculate Depth of Field on 27toolsVideo · Frame rate and shutter angle
Video Shutter Speed Calculator
Calculate a suitable video shutter speed from frame rate and shutter angle, with practical guidance for motion blur and 50Hz or 60Hz lighting.
Calculate Shutter Speed on 27toolsVideo · Bitrate and storage
Video Recording Time Calculator
Estimate how long a memory card can record at a chosen bitrate or calculate how much storage an upcoming video shoot may require.
Calculate Recording Time on 27toolsExplore Justy Media photography or return to all free resources.