File Formats
Adobe Photoshop has a variety of formats, which you can choose to hide in. It may seem confusing and unmanageable, but actually it is not so bad … Your camera also has probably the highest 3 different formats.
There are many ways to save their photos / drawings on. What format should be in store depends entirely on the medium as the image is presented.
Is it the Internet, desktop background or print / pressure? If it is print / prints are JPG since so bad?
I will review the most common and well-known graphic formats, complete with a brief description of their advantages and disadvantages, and provide examples of how it can be used.
BMP – Bitmap
BMP files are images stored in a raw bitmap format (not to be confused with camera RAW format). Other formats of the same type with the same qualities Examples include IMG, PCX, and DIB. These can contain almost infinite number of colors, but the disadvantage is that the format is a kind of RAW format, and therefore turns terribly much. Palette using the RGB (Red, Green, Blue). An image of 800×600 pixels will fill 1,440,000 bytes (equivalent to 1.37 megabytes), which we calculate 800 * 600 * 3! This format is largely used today by Microsoft, where they distribute their Windows, Office, etc. ..
This format is NOT web-friendly in that it fills very much compared to GIF, PNG and JPEG! However, it may well be used by all browsers can display BMP.
GIF – Graphics Interchange Format
GIF files are images stored in the max. 8-bit color, ie. 256 colors. This makes the course to a given image in GIF fills much smaller than an image, For example. 24 bit (16.7 million colors) stored in the aforementioned BMP. That unfortunately also means that there is cheerless much color information is lost.
On the other hand, GIF is one of only two formats that can store a picture with TRANSPARENT background – even when it appears in a web browser! Images are aware always square, and it can quickly look bad next to a picture with the yellow background on a website with black background. If you want to build a fancy title with transparent background, so you will typically choose GIF.
In addition, the GIF can be animated! You can save multiple images in a GIF file, and thus make a little short animation. Today, Flash, However, virtually taken over this function and GIF animations are used almost exclusively in the small icons to draw attention to itself (attention) in web …
GIF is suitable for Internet use, since it is supported by all browsers.
JPEG – Joint Photographic Experts Group
JPG / JPEG files are images stored in a compressed format destructive. This format can store the full 24 bit color, but by extreme hard compression is also very similar image, information is lost. It loses sharpness, detail and color the more you compress. The advantage is that JPEG can be compressed with an optional value! If you have a very colorful, nuanced and detail-rich image selected typically a low compression factor and has a mono-empty and simple image (a few colors, get crisp types) selected typically a HIGH compression factor. Even with a low compression factor will fill the image much smaller than a BMP!
JPEG is ideal for Internet use, since it is supported by ALL browsers in addition to space savings in the other end also makes it quick to show. On the other hand, it is more doubtful format to use for professional printing. You may as well save the 150 PPI intern (and for that matter, PPI dpi internal) and it actually makes that one may well use it for printing / processing in Photo instance Japan, Føtex or Bilka. In Photoshop you can save in JPEG in two ways, either as “save as” (quality: 1 – 12 WHERE 12 is the highest quality) Or “Save for Web ‘(quality: 1% – 100% where 100% is highest quality). Even at the very highest quality (100% in “Save for Web” Or 12 “save as”) the picture will lose a bit of information, and if you save the same image over itself, many times, it will slowly become worse and worse. It helps in other words, not to save a JPEG image at 100% quality; this will only spoil the picture further.
PSD – Adobe Photoshop
PSD files are images saved in Adobe Photo Shop image. They fill very much, because they are uncompressed. The advantage of the format is that it stores things such as layers, masks, and other miscellaneous settings adjustments. If you have edited / created an image from scratch in Photoshop, you should ALWAYS make sure to keep the PSD file with all layers intact, before compressing, For example. JPG or PNG. Furthermore, you can choose between several favorites’ (LIKE. RGB, sRGB, indexed and CMYK).
PSD is suitable for print / PRINT, but no pigeons around the internet, as it does not appear in browsers. Due Forma’s size, it is not suitable for the transport / forwarding.
PSP – Paint Shop Professional
PSP files have images saved in the Jasc Paint Shop Pro format. The formats are a response to Adobe Photo Shop and have similar properties.
PCD – Kodak PhotoCD
PCD files are images stored in Kodak format Photo CDs. It is available in 5 And 6 amateur professional formats. It can compress the non-destructive, which on the one hand, there will no loss of quality, while on the other hand means that you can still up in the relatively large size compared with JPG and PNG.
PNG – Portable Network Graphics
PNG is the “new” file format (from 1995), which is designed to replace JPEG and to some extent with GIF. It compresses the non-destructive (ie not as a JPEG), and can use transparency in more than 256 colors, ie. with true alpha channel (32 bit)! Especially the latter makes it a truly attractive format. It turns around half of a TIFF image, and quality is the same for the eye!
The reason why PNG has not been used fully yet, is probably that the format is not fully supported by Internet Explorer 6 (only version 7 can display 32-bit PNG correctly) and the slightly larger file size compared to JPG. PNG, However, in many respects the best format to use, especially if quality means more than the file size. PNG may apply different bit types; 1 bit per channel, 2 bits per channel, 4 bits per channel, 8 bits per channel and 16 bits per channel.
The loss-free compression as PNG uses a non-patented, and this has to do with the creation of PNG – which originally had a secondary role, namely “PNG – Not GIF”, by Unisys patented LZW algorithm (used, inter alia, in GIF format).
TIFF – Tagged Image File Format
TIFF files are images stored with the aim that they be used for press / PRINT. It is a professional format that compresses without information loss at all! This is done with LZW compression, which can be said to remind some of ZIP format can compresses anything. TIFF format is standard in the electronic graphics industry when you send files to hidden.
The format can not be used for internet, since it is not supported by browsers.
This was so little about the different file formats. As something else include Corel draws format. This use is not to point (pixel) Description, but by vectors. This implies that one can zoom infinitely without getting the familiar quality loss in the form of mouse stairs, color pixels, etc. It should then be said that the format be used only for computer drawings and example Can not take pictures, nor scan with it.
Here at last is a list of names of the different file formats:
AG4 Access G4 Document Imaging
TO AT & T Group IV
BMP Windows & OS / 2
BRK Brook Trout Fax
CAL CALS Group IV
CIT Intergraph Scanned Images
CLP Windows Clipboard
CMP Photo Matrix G3/G4 scanner format AND LEAD Technologies
CPR Knowledge Access
CT Scitex Continuous Tone
CUT Dr Halo
DBX DATABEAM
DCM DICOM medical image
Intel dcx fax
DX Auto Trollasen document imaging
ED5/ED6 EDMICS (You. With. DOD)
EPS encapsulate PostScript
FAX Fax
Fmv Frame Maker
Fpx Flashpix
GED Arts & Letters (draw)
IBM GDDM GDF format
CompuServe GIF
Gp4 CALS Group IV – ITU Group IV
GX1/GX2 Show Partner
ICA IBM IoCA
ICO Windows Icon
Amiga IFF ILBM
IGF Inset Systems (HiJaak)
IMG GEM paint
JFF / JPEG JPEG format (or. JFIF and JPEG)
KFX Kofax Group IV
LV Laser View Group IV
MAC Mac Paint
MIL See “gp4 "
MSP Microsoft Paint
NIF Navy Image File
PBM Portable Bitmap
PCD Photo CD
PCX PC Z-Soft Paintbrush
PIX See “IGF”
PNG Portable Network Graphics
PNM / PPM UNIX portable bitmap
PSD Photoshop native format
PSP Paint Shop Professional native format
RAS (gridless) SUN
SGI RGB (see “SGI”)
RIA Alpharel Group IV document imaging
RLC Image Systems
Miscellaneous RLE RLE-compressed formats, similar to BMP
RNL GTX RunLength
SBP IBM Story Board
SGI Silicon Graphics RGB
SUN Sun Corp.
TGA Target
TIF Tagged Image File Format
Wpg WordPerfect Image
XBM X Window Bitmap
XPM X Window pixelmap
XWD X Window dump
It should be mentioned that many of these formats are either past, present, or by being so. Most are not available in Photoshop, hence their relevance not elucidated here …
Digital Camera Formats
RAW
All SLRs and a range of semi-compact cameras can save in reformate. This is called global RAW, but says it is Nikon NEF, Canon says in CR2, Minolta MRW at etc. .. These reformatted is unfortunately not compatible with each other, but Photo Shop RAW plugin supports processing of the vast majority reformate. It must be said that Adobe has created a general reformate with open specifications – namely DNG. This format, we will probably see more widespread in the future – already supported by including Pentax K10D.
RAW comes directly from the camera, and as such is unaffected by the camera’s internal processing software, camera software, simply enter draft settings of the RAW file, but the user will be able to change these settings in the preferred RAW editor.
This will also retain the high bit types – typically 36-bit, and you can pay much more dynamic in your images, and even a lower noise level. RAW files turn to turn a lot more than as JPEG.
If you have the option, you should shoot in RAW whenever “it is important pictures we take.” Now almost all the pictures Monday shooting, some potential to become important later, so I am trying to say is – detonating money, buy a pair of 2GB memory card (they are cheap now) or greater, and shoot only in RAW . 
The advantages of RAW is therefore:
# Major bit types (12 bits per channel, compared to 8 bits per channel to JPEG)
# More dynamic in the picture
# Option to remove noise more effectively
# Option to remove the objective phenomena such as fringing more effectively
Only downside is as mentioned before, the extra space it takes. If you do not have software available which can thumbnail browse RAW images, you should shoot in RAW + JPEG (which both make a RAW file and a JPEG file for each photo shoot Monday).
JPEG
All digital cameras (except Sigma DSLR) can save the image in JPEG. This format is fine, but you should ALWAYS shoot the highest quality! There is no reason to get pictures with a little amative colors and sharpness are slightly lower, just because it would save 200-300 dollars for a new memory card.
TIFF
Some digital cameras can save in TIFF. Images stored in TIFF may have the same bit types as RAW, but TIFF images do not have the same opportunities as RAW editing. In contrast fills the slightly smaller than RAW, but still a lot more than JPEG.
