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A file format is a particular way that information is encoded for storage in a computer file.

learn more… | top users | synonyms

5
votes
3answers
1k views

Can I do “back conversion” of a B&W JPEG to color?

I have a black and white JPEG. It is in fact an RGB image, which means that the color is still there. And I know from past experience that when I shoot B&W with my Canon, the color image is still ...
0
votes
2answers
37 views

64GB CF Card exFat Format in D300?

I just bought a Sandisk 64GB CF card to use in a Nikon D300. Display says card is full. I reformatted the card in my PC, no luck. I formatted the card in my camera, same thing. Card appears to format ...
1
vote
4answers
84 views

Will a TIFF or JPEG be a better choice for detailed representation of an old painting?

I wish to purchase a high resolution photograph of an old painting to project and copy. The images are either in TIFF format, which is 148.8 mb, or JPEG, 24.3 mb. Would either of these give me the ...
0
votes
3answers
160 views

How can I prevent someone from zooming in to a photograph I send them? [closed]

I have a photograph named A.jpg. I have to send it to some other person and I dont want him to zoom it more than 30%. Is there any such option? I am ready to change my extension of the photograph ...
9
votes
3answers
805 views

Is there a lossy compressed file format for 16-bit dynamic range images?

I'd like to aggressively compress some scientific 16-bit grayscale image files, but without reducing the dynamic range. Is such a thing possible? I understand that JPEG format uses lossy, and ...
1
vote
3answers
102 views

Should I save scanned images of 35mm slides from a Nikon scanner in JPEG or Tiff?

I am scanning 35mm color slides, some 50 years old, with a Nikon scanner. Should I save the scanned image in jpeg or tiff format for saving on archival CDs?
1
vote
0answers
144 views

What is the practical purpose of “use raw as original” in Photos for OS X?

Within OS X Photos app, when I shoot jpeg/raw and upload to Photos, I get an image representing both files. By default I am looking at the jpeg. Or I can choose a command "Use Raw as Original". I ...
4
votes
3answers
213 views

Which has a faster write time: RAW or JPEG?

My question is about the write times of the RAW and JPEG file formats. A RAW file is larger than a JPEG and needs more time to write to the memory but it does not need to spend time on data ...
1
vote
2answers
98 views

Why are the extensions of files imported to my Mac in upper case?

I have an Olympus Stylus 1 camera. When importing photos taken with that camera onto my iMac via finder (not the Photos or iPhoto app) the extension of the photos are always in upper case, for example ...
2
votes
4answers
298 views

Why do modern DSLRs support JPEG but not lossless formats other than RAW?

I'm from a programming background and very new to photography. While working with the SDK for the Canon Rebel T3i, I realized that the only image formats natively supported by the camera are RAW (CR2) ...
-1
votes
1answer
85 views

How does software that extracts or views EXIF work? [closed]

I'm currently doing a research project on metadata extraction from various filetypes, and I'm not able to find any documents or research papers on image metadata extraction from photos. All I can find ...
16
votes
8answers
4k views

Why use JPEG instead of RAW?

Why would a photographer want to capture images using the JPEG format over an available RAW format? The obvious argument is memory card storage, but assume that my available memory card storage is ...
0
votes
1answer
190 views

Organizing photos for archival purposes, what format for metadata?

For long term archiving, what metadata format(s) are most likely to be readable in 10, 20, or 30 years? Currently I archive photos by directory in a tree structure starting with year at the top level. ...
0
votes
2answers
534 views

Possible to open Capture One preview/proxy files in Photoshop?

One of our photographers lost his raw files from a photoshoot, but we still have the Capture One preview/proxy files (.CR2.cop) and I'm trying to find a way to extract image data from them to salvage ...
0
votes
4answers
1k views

Does converting RAW files to TIFF lose image quality?

Before I found out about Camera Raw, I used to convert my photos from RAW to TIFF, using the XNVIEW convertor, downloaded from the Internet. My question is whether I lost image quality or anything ...
1
vote
1answer
274 views

Nikon D600 - shot raw but ended up with 2x JPG

I have been using a Nikon D600, and I thought I was using the raw mode (it said RAW on the screen). However after copying from the card to my computer, I have only managed to get a set of paired jpegs ...
0
votes
1answer
319 views

About Raw file format of Hasselblad H5D

We have a very good image manager which reads the Hasselblad H4D raw files and I want to ask some questions: Does someone know if the RAW format of Hassy H5D is the same with the H4D? IOW, if we can ...
3
votes
4answers
3k views

Did the Canon Raw format change in 70D?

Have there been any change in Canon's RAW (CR2) format in the Canon EOS 70D camera, comparing to older models like the EOS 60D? I could not open the 70D RAW files in Photoshop on a friend's computer, ...
1
vote
2answers
136 views

How to open 'RAW' file from UltraCam-Xp WA camera?

Is there any software which opens Digital Camera 'RAW' file format (size- 47 mb)? I tried Photoshop cs2 but it shows stretched pixels. I tried to import it in Erdas, it also shows error that ...
-4
votes
1answer
247 views

How to change .MOV file format to .AVI in Canon 650D [closed]

I have Canon 650D which I use mostly for video shoots. My question is: How can I change the video format via the camera settings? Is there any possibility to do that? The reason because my video ...
2
votes
4answers
5k views

Difference between PNG and RAW, other than compression?

I know that many professional cameras shoot in RAW. PNG has lossless compression which would allow cameras to save more shots than RAW. This leads me to wonder if there's anything special about RAW ...
0
votes
2answers
212 views

How do I convert a single FITS image into Red, Green and Blue images? [closed]

I've been looking for a software to get a FITS file and export 1 file for each of the RED, GREEN and BLUE channels. I came across Nebulosity last week, but I can't buy it's licence since I live in ...
3
votes
1answer
300 views

What are the files *.DSC, *.CFG and *.XMP and their purposes?

I am using a Sony Alpha-100 DSLR camera (and don't use the Sony software). The files, both RAW (*.ARW for Sony) and *.JPG, have a DSC (Digital Still Camera) prefix then a number. The photos are in a ...
2
votes
3answers
716 views

Is it better to print from jpg or tiff on A2 paper?

I just read the answers here, but if we are talking about printing high quality in A2 format (that's about 16"x23", for those not used to ISO standard paper sizes) on a good printer, is it possible to ...
3
votes
2answers
3k views

What information is contained in “filename.jpg.out.pp3” file?

When I edit my RAW file in RawTherapee and save it as JPG, the application creates another companion file along with the JPG — a file with the extension .jpg.out.pp3. What is the purpose of this ...
14
votes
6answers
7k views

What, if anything, does “RAW” stand for?

I understand that RAW files contain data straight from the sensor, that they're used as input to the production process that results in a final image, and that RAW isn't really one format but a ...
13
votes
6answers
18k views

What quality to choose when converting to JPG?

When you export a picture to JPG you can normally choose its quality in a 1-100 scale. I like to keep a good quality but it wouldn't make sense to keep a JPG that will be almost as big as the original ...
1
vote
2answers
89 views

Is it a good way store photo sets in a djvu file?

I have many set photos and i need organize them in packages, albums, something like that. I was storing them in a zip or cbz file, but djvu files seems best. What do you think about?
4
votes
1answer
2k views

What is lost when RAW is exported to TIFF for editing?

Is anything lost when you export from (Canon) RAW files to TIFF? For context: I backup and archive my RAW files, and keep a separate (Aperture) library for exported JPEGs. So far my workflow has been ...
7
votes
6answers
2k views

Why isn't saving photos as TIFF files a popular choice by DSLR manufacturers?

Why do many DSLRs have the option to save in RAW or JPEG but not in TIFF? It would be useful to save it as a TIFF file using lossless compression. It would be a midway between RAW and JPEG. Is it ...
1
vote
3answers
472 views

What is the difference between the different ways to export JPEG files from Photoshop?

Photoshop allows you to save the processed image as JPEG in two ways. Save As and Save for web. I have observed that Save for web gives more options like converting to sRGB etc. I have also observed ...
0
votes
3answers
647 views

How can I work around Photoshop Elements 7's inability to open JPG files from my Android phone?

I copied some photographs that I took with my Android phone to my laptop. When I tried to open them with Photoshop Elements 7.0, I received the following error message: Could not complete your ...
0
votes
1answer
381 views

What are compressed image formats with high quality/size ratio?

I'm looking for an image format, unpopular as it may be, that has good quality and also good compression. After I'm done post-processing my RAWs I want to export them in a way that's shareable and ...
7
votes
2answers
1k views

Should I care about jpeg2000 (and does anyone else)?

I know the question is a bit subjective, what I'm after is if there is enough improvement in jpeg2000 and enough support in software (image viewers, browsers) to warrant using it.
17
votes
6answers
11k views

What are jpeg artifacts and what can be done about them?

I know JPEG is a "lossy" compression algorithm that discards information in order to save space. What is the visual impact of this? I've heard of "JPEG artifacts". What do these look like? Are there ...
7
votes
4answers
1k views

What is a reasonable file format for film scanning?

I'm looking to use my CanoScan 8600F to digitally archive the photos I've shot on film. The issue I've stumbled on is deciding on a file format. Ideally I'd like something that is lossless but with ...
6
votes
3answers
299 views

Is there an open format to share image editing information?

I'm trying to find what would be the easiest way to share editing information across application while keeping the original image. My needs are pretty basic: I do keywording, toning and white ...
0
votes
0answers
213 views

Preserving SRW files? [duplicate]

Possible Duplicate: How do I make sure my RAW files are readable in the future? I'm using GNU/Linux and am an open format guy, so I have a proprietary SRW file from my Samsung camera. Now, ...
13
votes
3answers
9k views

Is TIFF really of higher quality than PNG-24?

I've been doing some research to try to figure out why more people do not store high-resolution image files as PNG-24. PNG has exactly-reversible, lossless compression, it is a net-friendly format so ...
6
votes
4answers
4k views

Should I save an image as png, jpeg or bmp?

If I edit an image file using some application like Gimp, Photoshop or MSPaint, while saving I will be asked to select the required file-format. There are different formats available, the common ones ...
23
votes
7answers
9k views

Is it better to store edited photos as PSD or TIFF files?

After editing/retouching a photo in Photoshop, if I want to store that file long term with the edits, what are the advantages/disadvantages of storing it in TIFF vs. PSD format? There's a ...
4
votes
3answers
8k views

What's the difference between PEF and DNG RAW formats?

I just recently purchased a Pentax K-r. It has two formats to shoot raw with, PEF and DNG. Are there advantages or disadvantages with using one over the other?
1
vote
4answers
2k views

Why does the RAW file format take up so much more space than JPEG?

When I have it set to the highest JPG quality, my 8GB card can hold about 1000 images. If I switch to RAW format, it drops the capacity to about 200 images. So why do images captured as RAW take up 5 ...
26
votes
5answers
3k views

Why don't cameras support JPEG 2000 format?

The original JPEG format was updated in 2000 to provide a variety of features including less artifacts, better compression and lossless compression. Why haven't cameras updated to use this new ...
49
votes
7answers
9k views

Why don't most cameras support PNG format?

I prefer PNG format to JPG, because JPG uses lossy compression. When I capture a screen in my PC or scan a picture or document in my scanner, I always save them as PNG format. If a camera could ...
7
votes
8answers
88k views

How to reduce the file size of my photos (to under 15 MB)?

I don't have a "Pro" account on Flickr, just the free one, so my photo uploads are capped to 15 megabytes/file. After post-processing, my photos end up being too large to be uploaded to Flickr. I do ...
4
votes
3answers
4k views

How can I resize Raw images and store them back in the original format?

I have some raw images captured using Canon,Nikon,Minolta cameras.(*.CR2, *.NEF, *.MRW) I want to change resize them and store them back as the original format. I checked in two tools, Canon ...
13
votes
5answers
72k views

Should I use JPG or TIFF for high-quality prints?

I am putting together a photo book. I shot all the photos in RAW. The prints will be 300pi on 13x11 inch glossy paper. I am laying out the pages in InDesign, which doesn't allow me to import and place ...
11
votes
2answers
2k views

Does the Canon *.CR2/CRW format contain “truly RAW” data?

In my work I am dealing with *.CR2 raw images taken by a Canon DSLR in raw mode. When I read about the format here, I was surprised to find that it has 4 TIFF IFDs which contain a) Original Size JPEG ...
7
votes
1answer
643 views

How many different RAW formats are there?

All major manufacturers seem to have their own raw file format. How many of them are? Do they all have similar information? Is there any standard?