Canon CR2 to ICO: conversion guide

Source · Canon CR2
Target · ICO

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What happens when you convert Canon CR2 to ICO?

RAW development

Canon CR2 needs camera- and file-aware development to produce a rendered ICO image. White balance, exposure, camera colour interpretation and, where applicable, demosaicing determine that rendering. The destination does not retain the original RAW development latitude. No development settings or camera support are implemented yet.

Icon packaging

ICO can package alternative icon sizes and image encodings. Converting one image does not automatically design a readable small icon or generate every required size. Resampling, image entries, alpha/mask representation and encoding are future engine choices; check the target application’s icon requirements.

Transparency

The target can store an alpha channel, but converting an opaque image does not create transparent areas. Removing a background is a separate editing step.

Encoding mode

ICO compression depends on the embedded image payload. Multiple sizes are alternatives, not animation frames; transparency handling differs between old masks and alpha-capable images. ICO permits different encoding modes or container representations. Its format name alone does not promise lossless output, a quality setting or a size reduction. The future engine must choose a supported codec and sample representation; inspect the target’s compression notes below.

Canon CR2

Source

Canon CR2

Canon Raw 2

Compression: Depends on variantTransparency: NoMetadata: Capture metadata

Canon’s TIFF-based raw format for compatible camera generations, retaining data for later photo development.

Explore Canon CR2 format →
ICO

Target

ICO

Windows Icon

Compression: Depends on variantTransparency: YesMetadata: Image dimensions, Colour depth

An icon resource containing several raster sizes and colour depths, with masks or alpha for transparency.

Explore ICO format →

Is Canon CR2 → ICO right for you?

Good choice when

  • ICO fits your delivery use: Application icons & favicons.
  • You need a developed image for a non-RAW application.
  • You need an icon resource for a compatible application.
  • Your receiving application supports the required ICO variant.
  • You need a ICO-compatible workflow that can hold transparency added in a separate edit.

Probably not when

  • You need the original sensor data and freedom to redevelop it.
  • You need automatic icon design or guaranteed multi-size packaging.
  • You need a guaranteed quality or file size before encoder settings exist.
  • You require identical samples without a defined colour and precision policy.
  • You expect automatic background removal or transparency.

Canon CR2 to ICO conversion details

RAW development
Canon CR2 needs camera- and file-aware development to produce a rendered ICO image. White balance, exposure, camera colour interpretation and, where applicable, demosaicing determine that rendering. The destination does not retain the original RAW development latitude. No development settings or camera support are implemented yet.
Icon packaging
ICO can package alternative icon sizes and image encodings. Converting one image does not automatically design a readable small icon or generate every required size. Resampling, image entries, alpha/mask representation and encoding are future engine choices; check the target application’s icon requirements.
Transparency
The target can store an alpha channel, but converting an opaque image does not create transparent areas. Removing a background is a separate editing step.
Encoding mode
ICO compression depends on the embedded image payload. Multiple sizes are alternatives, not animation frames; transparency handling differs between old masks and alpha-capable images. ICO permits different encoding modes or container representations. Its format name alone does not promise lossless output, a quality setting or a size reduction. The future engine must choose a supported codec and sample representation; inspect the target’s compression notes below.
Sample precision & colour
Source and target sample models can differ in precision, channel layout, colour space and transfer function. Lossless compression only preserves the samples actually encoded; a precision reduction or colour conversion can already change them. The future engine defines numeric mapping, orientation and colour conversion; canonical depth facts are listed below where available.
Metadata & colour
Format support does not guarantee that an export preserves metadata or colour profiles. Retention and colour handling depend on the future converter; its engine is not implemented yet.
Compression
Canon CR2: Depends on variant → ICO: Depends on variant Canon CR2: Raw precision and reduced-size recording modes depend on the camera. A lossless compression stage does not imply that a reduced-size raw has identical data to a full-resolution capture. Use the camera documentation and a decoder that supports that exact model and mode. ICO: ICO compression depends on the embedded image payload. Multiple sizes are alternatives, not animation frames; transparency handling differs between old masks and alpha-capable images.
Transparency
Canon CR2: No → ICO: Yes
Colour depth
Canon CR2: Camera and recording mode
Multiple images
ICO: Alternative icon sizes
Sensor data
Canon CR2: Raw development required
Dimensions
Pixel dimensions, page geometry, rendering resolution, resizing and orientation need explicit converter policies. The future engine has not defined them yet.
Metadata
Canon CR2: Capture metadata → ICO: Image dimensions, Colour depth. Which fields are copied, rewritten or omitted will depend on the future engine; retention is not implemented yet.

Common questions

Will ICO still be an editable camera RAW?

Canon CR2 needs camera- and file-aware development to produce a rendered ICO image. White balance, exposure, camera colour interpretation and, where applicable, demosaicing determine that rendering. The destination does not retain the original RAW development latitude. No development settings or camera support are implemented yet.

Will ICO automatically create all icon sizes?

ICO can package alternative icon sizes and image encodings. Converting one image does not automatically design a readable small icon or generate every required size. Resampling, image entries, alpha/mask representation and encoding are future engine choices; check the target application’s icon requirements.

Will the background become transparent?

The target can store an alpha channel, but converting an opaque image does not create transparent areas. Removing a background is a separate editing step.

Are bit depth and colour values guaranteed to match?

Source and target sample models can differ in precision, channel layout, colour space and transfer function. Lossless compression only preserves the samples actually encoded; a precision reduction or colour conversion can already change them. The future engine defines numeric mapping, orientation and colour conversion; canonical depth facts are listed below where available.

Will metadata and colour profiles be retained?

Canon CR2: Capture metadata → ICO: Image dimensions, Colour depth. Which fields are copied, rewritten or omitted will depend on the future engine; retention is not implemented yet.