The key setting is not “dpi” on the camera. Cameras capture a fixed number of pixels; print resolution depends on how many of those pixels you spread across a given print size.

For printing, think in pixels and print dimensions:

• required pixels = print size in inches × target ppi
• example: 6×4 inches at 300 ppi needs 1800×1200 pixels

So your 1378×775 image is simply too small for many 300 ppi print sizes. If you place it into a larger 300 ppi Photoshop document, Photoshop must upscale it, which makes edges look soft or blurry.

What to do:

• Set your camera to record at its largest image size/resolution.
• Don’t worry about the camera’s 72/96 dpi metadata; that value is not the real capture quality.
• Match your Photoshop document size to the image’s actual pixel dimensions, or calculate what print size those pixels can support at 300 ppi.
• If you need larger prints at 300 ppi, you need more pixels from the camera (higher megapixels) or a smaller print size.

In short: use the camera’s maximum pixel resolution, and size the print based on pixel count—not the dpi number shown in file metadata.