How to Convert Multiple NEF Images to STP?
1. Download and Install reaConverter
reaConverter is a standalone Windows app — download, install, and start converting NEF files in under two minutes. You can also resize, crop, and adjust images during conversion.
2. Load your NEF files
Start reaConverter and add your .nef files. The software processes everything locally, so your files never leave your computer.
Add files by dragging them in, browsing folders, or using the right-click menu from Windows Explorer.
3. Select STP as output format
Choose STP as the target format. Pick a destination folder or let reaConverter save files alongside the originals.
4. Start NEF to STP conversion
Then simply press the Convert button and your conversion will begin in no time!
Once the conversion is complete, you can find your STP files in the destination folder you selected.
How NEF and STP differ in practice
NEF files hold unprocessed sensor data, so white balance and exposure are still adjustable. Converting to STP bakes those decisions into the pixels, and highlight recovery is no longer available afterwards. Set white balance and exposure before the run rather than after. NEF is made of pixels and STP is a geometry format, so the two describe images in fundamentally different ways. Check the result before sending it downstream: what matters is whether the output contains editable geometry or a picture placed inside a STP container, and that determines whether a CAD or design tool can work with it.
