Canon Camera Connect

Canon Camera Connect Reduces Photo Quality

Why your transferred photos look worse than the originals, and how to fix it.

You took a sharp 30 megapixel photo on your Canon camera, but after transferring it to your iPhone with Canon Camera Connect, it’s a blurry 2 megapixel JPEG. Here’s why that happens and how to make sure you get the full-resolution file.

Why photos lose quality during transfer

Canon Camera Connect has several settings that can silently reduce image quality:

1. Resize setting is on by default

Camera Connect has a resize option that’s enabled by default on some versions. This downscales photos during transfer — sometimes dramatically (from 30 MB to under 1 MB).

How to fix it:

  1. Open Canon Camera Connect.
  2. Go to the app’s settings (gear icon).
  3. Look for Save to smartphone or Image size settings.
  4. Set the resize option to Original or Do not resize.

2. RAW files get converted to JPEG

If you shoot in RAW, Canon Camera Connect may convert your files to JPEG during transfer. This is especially true on Android, where RAW transfer isn’t supported at all. On iPhone, RAW transfer is available but may not be the default.

How to fix it:

  • When selecting images to transfer, look for an option to choose the file format (RAW or JPEG).
  • If you shoot RAW+JPEG, the app may default to transferring the smaller JPEG. Select the RAW version explicitly.

3. The preview looks low-res (but the file may be fine)

Camera Connect shows a small preview when you tap on an image. This preview is often low-resolution regardless of the actual file. The full-resolution file may already be in your Photos library — check there instead of judging by the in-app preview.

4. Video quality is reduced

Videos are often downscaled from 1080p to 720p during transfer. There’s no reliable fix for this within Camera Connect. For full-quality video transfer, use a card reader.

How to verify you’re getting full resolution

After transferring a photo:

  1. Open the Photos app on your iPhone.
  2. Find the transferred photo and tap the (i) info button (or swipe up on the photo).
  3. Check the resolution. For example, an EOS R5 photo should be 8192 × 5464 pixels, and a 5D Mark IV photo should be 6720 × 4480 pixels.
  4. If the resolution is much lower (e.g., 1920 × 1280), the resize setting is compressing your transfers.

When a card reader is the better option

For the highest quality and fastest transfers, especially with RAW files and video, a USB-C or Lightning SD card reader ($10-20) transfers files at full quality with no compression. This is the most reliable option for:

  • Large batches of photos
  • RAW files
  • 4K video
  • Any situation where quality matters

Transferring full-quality files wirelessly

Shutter transfers full-resolution JPEG and RAW files directly to your iPhone’s Photos library. When you download a photo, you get exactly what’s on the memory card — no silent resizing, no format conversion.

If you shoot RAW+JPEG, Shutter lets you choose which format to download with a clear selector. The files go straight into Photos, where they’re available in Lightroom, Darkroom, or any other editing app.

Try Shutter free for 7 days.