EXIF VIEWERThe full EXIF toolkit lives on your iPhone
This page shows what's inside a photo. EXIF Viewer by Fluntro goes further — view, edit, and remove metadata (including GPS geotags) right in your photo library, bulk-edit dates and locations, and share any photo with or without its EXIF. One-time purchase, no subscription. Your photos never leave your device there either.
https://apps.apple.com/us/app/exif-viewer-by-fluntro/id944118456
iPhone · iPad
Depth of field — frequently asked questions
What is depth of field?
The zone in front of and behind your focus point that appears acceptably sharp. It's controlled by aperture, focal length, subject distance, and sensor size — f/1.8 gives a thin, blurry-background DoF; f/11 keeps much more in focus.
How is it calculated?
From the hyperfocal distance H = f²/(N×c) + f (focal length f, f-number N, circle of confusion c). Near limit: s(H−f)/(H+s−2f); far limit: s(H−f)/(H−s). This page does it instantly as you type.
What is hyperfocal distance?
The focus distance that maximises DoF: focus there and everything from half that distance to infinity is acceptably sharp — the landscape photographer's trick, shown live above.
What is the circle of confusion?
The largest blur spot the eye still sees as a sharp point in a standard print — about 0.030 mm on full frame, 0.020 mm on APS-C, 0.015 mm on Micro Four Thirds. The sensor selector applies the right value.
Why does sensor size change DoF?
Smaller sensors use shorter focal lengths for the same framing, and shorter lenses have inherently deeper DoF — that's why phones keep everything sharp while full-frame blurs backgrounds easily.
How do I get maximum background blur?
Wide aperture (small f-number), longer focal length, get closer to the subject, and put distance between subject and background. Watch the total DoF thin out as you try it above.
How do I get everything sharp for a landscape?
Stop down to f/8–f/11 and focus at the hyperfocal distance shown. Avoid f/22 — diffraction starts softening the whole frame.
Is DoF split equally around the focus point?
Rarely — at normal distances roughly ⅓ falls in front and ⅔ behind. The split approaches 50/50 in macro and becomes extremely back-heavy near the hyperfocal distance. The exact split is shown above.
Where can I see the aperture a photo was taken at?
In its EXIF metadata — use the EXIF viewer on this site, or on iPhone & iPad the EXIF Viewer by Fluntro app, to read aperture, focal length and camera from any original photo.
Is this calculator free?
Yes — free, no account, and it runs entirely in your browser with nothing sent anywhere. It even works offline once loaded.
Private by design
This tool was built so your photos never have to leave your device. Here's exactly what that means for your data.
Nothing is uploaded
Your photo is opened and read entirely inside your own browser. It is never sent to a server, stored, or shared — once this page has loaded, it even works with your connection switched off.
No account, no tracking
There is no sign-up, no advertising cookies, and no analytics watching what you do here. The only thing saved on your device is your light or dark theme preference.
Your location stays yours
If a photo contains GPS coordinates, they are shown only to you, on your screen. We never see them, and any map link opens only if you choose to click it.
Nothing to collect
Because no personal data leaves your device, there is nothing for us to collect, log, or process. The full details are in our Privacy Policy.
Metadata is read from your file exactly as it was saved and is shown “as is.” It can be missing, altered, or inaccurate — for example, timestamps depend on the camera's clock and GPS can be approximate — so please don't rely on it as proof for legal, forensic, insurance, or safety decisions. This tool is provided free and without warranty; see our Terms & Disclaimer for the details.
More free photo tools
All run in your browser — nothing is ever uploaded.
Inspect & verify
- EXIF Metadata ViewerSee every tag hidden in a photo
- Photo Privacy CheckerWhat does your photo reveal about you?
- Is This Photo Edited?Editing traces & AI markers
- What Camera Took This Photo?Identify the camera, phone & lens
- When Was This Photo Taken?Find the exact date & time
- Photo Location ViewerSee where a photo was taken
- Camera Shutter CountCheck a camera’s shutter actuations
Edit & clean
- Remove EXIF DataStrip metadata & GPS — losslessly
- Change Photo DateFix the EXIF date & time
- Add GPS to a PhotoGeotag — write a location into EXIF
- Add Copyright to a PhotoEmbed your name in the metadata
Image utilities
- Resize ImageShrink to exact pixels
- Compress ImageCut the file size, keep dimensions
- Add Watermark to a PhotoPut your name on it
Calculators
- Depth of Field CalculatorDoF & hyperfocal distance · you are here
- Golden Hour CalculatorSunrise, sunset & blue hour
- ND Filter CalculatorLong-exposure time converter
- 500 Rule CalculatorMax shutter before stars trail