Advantages:
- high controlled degree of compression. The user independently selects the ratio quality/file size;
- small file size;
- format is compatible and it is displayed correctly in any browsers, text and graphics programs, on all computers, tablets and mobile devices;
- suitable for full-color realistic images with a lot of color and contrast transitions;
- picture quality is high with small degree of compression.
Disadvantages:
- image may “fall apart” into individual squares – 8×8 pixel blocks when you squeeze it. This occurs because compression algorithm involves analysis of neighbouring pixels, due to this smooth color – transitions may become harsh or just disappear;
- JPEG is less suitable for working with text or monochrome graphics with clear boundaries;
- format does not support transparency and In case of drawing templates, logos, buttons it’s necessary;
- every next step of compressing the image degrades its quality .
RAW: The RAW file format is digital photography's equivalent of a negative in film photography: it contains untouched, "raw" pixel information straight from the digital camera's sensor. Raw files are named so because they are not yet processed and therefore are not ready to be printed or edited with a bitmap graphics editor. Normally, the image is processed by a raw converter in a wide-gamut internal colorspace where precise adjustments can be made before conversion to a "positive" file format such as TIFF or JPEG for storage, printing, or further manipulation, which often encodes the image in a device-dependent colorspace.
Advantages:
- Uncompressed image, direct from camera sensor
- Best image quality overall as well as flexibility in post processing
- Things such as white balance, exposure, colour space, contrast, saturation can all be adjusted by software easily
- It is a non destructive format, therefore any changes made such as cropping or adjustments can be undone and the image reverted back to its original state.
Disadvantages:
- Needs dedicated RAW converter to process images such as Adobe RAW or Cameras own software
- Most website and online images galleries do not support RAW uploading.
- Not recommended for use when sending to printing labs or similar due to incompatibilities and the nature of the file type.
- Large file sizes, approx. 12mb for a 10 megapixel file.
DNG: Digital Negative (DNG) is an open lossless raw image format written by Adobe used for digital photography. DNG is based on the TIFF/EP standard format, and mandates significant use of metadata. Use of the file format is royalty-free; Adobe has published a license allowing anyone to exploit DNG, and has also stated that there are no known intellectual property encumbrances or license requirements for DNG.
Advantages:
- Similar camera RAW, created by Adobe as a standardised format
- Uncompressed image, identical to original Camera RAW file
- Best image quality overall as well as flexibility in post processing
- It is a non destructive format, therefore any changes made such as cropping or adjustments can be undone and the image reverted back to its original state.
- Slightly smaller file sizes compared to Camera RAW, approximately 8mb for a 10 Megapixel image
- Cross compatible with all Adobe software so no additional RAW converter needed
Disadvantages:
-Needs Adobe Software or compatible to open and process image
PSD: A PSD is a layered image file used in Adobe Photoshop. PSD stands for Photoshop Document, it is the default format that Photoshop uses for saving data. PSD is a proprietary file that allows the user to work with the images' individual layers even after file has been saved.
Advantages:
- A format created by Adobe for Photoshop use, it contains all the original image data as well as any layers, adjustments and full image history.
- Ideal for use when processing images as a user can save the file and then go back to it at a later date
Disadvantages:
- Generally only recognised by Photoshop software and certain other image manipulation software
TIFF: TIFF is a computer file format for storing raster graphics images, popular among graphic artists, the publishing industry, and both amateur and professional photographers in general. The format was originally created by the company Aldus for use in desktop publishing. It means Tagged Image File Format.
Advantages:
- Uncompressed image retains maximum amount of image data from the camera.
- Can be compressed to reduce file sizes using mathematical algorithms such as ZIP or TAR without loss of image data
- Can also use lossy compression such as JPG algorithms to reduce file size
- Recognised format by most computers, cross compatible with both MAC and PC’s
- Standard format for printing either at home or dedicated Photo lab.
Disadvantages:
- Large file sizes, around 20mb for a 10 megapixel image, so larger storages devices needed for long term archival use.
- Good specification computer needed to process and load images.
- Most website and online images galleries do not support tiff uploading.
- Slow speeds when transferring to online galleries that do support TIFF files
- JPEG is less suitable for working with text or monochrome graphics with clear boundaries;
- format does not support transparency and In case of drawing templates, logos, buttons it’s necessary;
- every next step of compressing the image degrades its quality .
RAW: The RAW file format is digital photography's equivalent of a negative in film photography: it contains untouched, "raw" pixel information straight from the digital camera's sensor. Raw files are named so because they are not yet processed and therefore are not ready to be printed or edited with a bitmap graphics editor. Normally, the image is processed by a raw converter in a wide-gamut internal colorspace where precise adjustments can be made before conversion to a "positive" file format such as TIFF or JPEG for storage, printing, or further manipulation, which often encodes the image in a device-dependent colorspace.
Advantages:
- Uncompressed image, direct from camera sensor
- Best image quality overall as well as flexibility in post processing
- Things such as white balance, exposure, colour space, contrast, saturation can all be adjusted by software easily
- It is a non destructive format, therefore any changes made such as cropping or adjustments can be undone and the image reverted back to its original state.
Disadvantages:
- Needs dedicated RAW converter to process images such as Adobe RAW or Cameras own software
- Most website and online images galleries do not support RAW uploading.
- Not recommended for use when sending to printing labs or similar due to incompatibilities and the nature of the file type.
- Large file sizes, approx. 12mb for a 10 megapixel file.
DNG: Digital Negative (DNG) is an open lossless raw image format written by Adobe used for digital photography. DNG is based on the TIFF/EP standard format, and mandates significant use of metadata. Use of the file format is royalty-free; Adobe has published a license allowing anyone to exploit DNG, and has also stated that there are no known intellectual property encumbrances or license requirements for DNG.
Advantages:
- Similar camera RAW, created by Adobe as a standardised format
- Uncompressed image, identical to original Camera RAW file
- Best image quality overall as well as flexibility in post processing
- It is a non destructive format, therefore any changes made such as cropping or adjustments can be undone and the image reverted back to its original state.
- Slightly smaller file sizes compared to Camera RAW, approximately 8mb for a 10 Megapixel image
- Cross compatible with all Adobe software so no additional RAW converter needed
Disadvantages:
-Needs Adobe Software or compatible to open and process image
- Most website and online images galleries do not support Adobe Digital Negative uploading.
- Not recommended for use when sending to printing labs or similar due to incompatibilities and the nature of the file type.
- Large file sizes, approx. 8mb for a 10 megapixel file.
Advantages:
- A format created by Adobe for Photoshop use, it contains all the original image data as well as any layers, adjustments and full image history.
- Ideal for use when processing images as a user can save the file and then go back to it at a later date
Disadvantages:
- Generally only recognised by Photoshop software and certain other image manipulation software
TIFF: TIFF is a computer file format for storing raster graphics images, popular among graphic artists, the publishing industry, and both amateur and professional photographers in general. The format was originally created by the company Aldus for use in desktop publishing. It means Tagged Image File Format.
Advantages:
- Uncompressed image retains maximum amount of image data from the camera.
- Can be compressed to reduce file sizes using mathematical algorithms such as ZIP or TAR without loss of image data
- Can also use lossy compression such as JPG algorithms to reduce file size
- Recognised format by most computers, cross compatible with both MAC and PC’s
- Standard format for printing either at home or dedicated Photo lab.
Disadvantages:
- Large file sizes, around 20mb for a 10 megapixel image, so larger storages devices needed for long term archival use.
- Good specification computer needed to process and load images.
- Most website and online images galleries do not support tiff uploading.
- Slow speeds when transferring to online galleries that do support TIFF files
No comments:
Post a Comment