What is a NEF file?
NEF — RAW Nikon
Use the format NEF
A concrete example
Create a readable copy of a Nikon photograph for a shared album.
Useful checks
Check the color rendering and very bright areas. Proprietary settings are not always retained.
Choose a conversion
Keep the original and open the result in the software or on the device that will need to use it.
Your questions about this format
How to convert a HEIC photo from iPhone for free?
Choose your HEIC file in Images, then JPEG to share it widely or PNG if your usage requires it. Proceed to preparation, check the output, and start the conversion. Download and open the result. HEIC remains free; size limits and daily quota apply.
JPEG, PNG or WEBP: how to choose?
For a photo to send, start with JPEG. For a logo with transparency or sharp text, prefer PNG. For a web publication, WEBP can be interesting: compare the size and the rendering before publication. Converting a JPEG to PNG does not restore details lost earlier.
Why does my transparent background become opaque?
JPEG does not preserve transparency. Choose PNG or WEBP when the background must remain transparent and the proposed conversion allows it. If the background is already flattened in the original file, changing the format will not remove it.
Will my Photoshop layers or my vector drawing be preserved?
A JPEG or PNG output is a flattened image. It does not retain PSD layers or the editable objects of an SVG or an Illustrator file. Keep your working file and use the exported copy for sharing. Specialized creation formats are indicated by NoLimit.
What is it?
NEF is Nikon's RAW format, the exact counterpart to Canon's CR2: raw sensor data, captured before any processing is applied.
It stores sensitivity, white balance and other shooting settings as instructions rather than baking them permanently into the image. Everything remains adjustable at the editing stage.
History & origin
Nikon introduced NEF with its first professional digital SLRs in the late 1990s, and has continued to develop the format without ever renaming it.
The format was once the subject of controversy: Nikon briefly encrypted certain white-balance data, which caused problems for third-party software. Pressure from photographers put an end to the practice.
Why it is useful
12- or 14-bit depth gives enormous latitude for correction, with no loss of information at capture.
It is supported by every major editing application.
Limits & drawbacks
Files are large, the format is proprietary, and it cannot be used directly on the web or sent by email.
Files from a newly released camera body may not be recognized by software that hasn't yet been updated to support it.
Practical tips
Edit the image, then export it: JPEG for sharing, TIFF for printing. Never discard the original NEF file.
For quick use — pulling a viewable image with no intention of editing it — converting straight to JPEG works perfectly well.
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Convert a NEF