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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

-4
votes
2answers
136 views

Which is the best strategy to downsize an image file?

Images created by a camera or by a scanner can get a very large file size. this huge size has downsides: Can't send over mail. Can't publish on a web site Any action abuses the computer CPU and ...
21
votes
5answers
10k 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 ...
16
votes
10answers
5k 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 ...
1
vote
1answer
94 views

Corrupted JPG has undesired color bars overlay [duplicate]

I have transferred photos from my camera SD card to my computer (using a card/ram reader) and deleted the original photos. Now I have just realized there are color bars overlaid in photos. Here is an ...
1
vote
4answers
150 views

What is a “losee file format”?

I am wondering what a "losee file format is". I came across the term in my photography class book The exact question in the book is: Which of these file formats are considered losee? Does that ...
2
votes
3answers
265 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
3answers
507 views

The CR2 photos I take on my Canon will not save as an image file. How can I fix this?

I copy and pasted my photos from my Canon Rebel SL1 straight to My Pictures on my computer. They appear to be image files, but the file type is "CR2". When I try to post them on Facebook, image ...
0
votes
1answer
79 views

How can I access a file with a .jpg&h=906 ending? [closed]

I've recently come across an image with the filetype, ".jpg&h=906" and for some reason I cannot view the image on my desktop computer once downloaded. Does anyone know anything about this ...
0
votes
1answer
52 views

DNG Compatibility in Adobe Lightroom

In Adobe Lightroom CC 2015.3, Preferences -> File Handling -> Compatibility, I have "Camera Raw 7.1 and later" selected. After importing RAW files, for example a few Sony's ARW RAW files, via Import ...
27
votes
6answers
3k views

Which cameras support DNG natively?

Not all cameras support DNG natively. That is, if you want to process DNG files they need to be converted from the camera's proprietary RAW format to DNG afterwards. So, which cameras support DNG ...
1
vote
2answers
386 views

Why doesn't PNG show more detail than JPEG in a converted NASA image?

I have a really limited knowledge of photography, so, bearing that in mind, here is my problem. I downloaded an IMG file with a separate label file from NASA PDS because I wanted to visualise the ...
18
votes
6answers
32k 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
1answer
296 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 ...
7
votes
8answers
102k 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 ...
2
votes
3answers
185 views

Lossy but essential: is there a modern file format useful for modern camera files?

I remember the early digital cameras that had anything resembling useful quality (megapixel) stored JPEG files that were noticeably lossy. As memory cards became more capable, this was addressed and ...
0
votes
4answers
2k 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 ...
17
votes
6answers
111k 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 ...
27
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 ...
6
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 ...
1
vote
4answers
119 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
294 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 ...
10
votes
3answers
1k 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
2answers
177 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 ...
1
vote
3answers
203 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?
84
votes
5answers
3k views

What is RAW, technically?

From a technical perspective, what exactly is RAW and how does it differ from JPG or bitmap images? I'm not asking about the pros/cons versus another format, but rather what constitutes RAW format, ...
5
votes
3answers
305 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
93 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?
2
votes
4answers
366 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) ...
26
votes
8answers
4k views

Which is a better way to store your photos? RAW or TIFF?

I have read posts that alot of photographers are using RAW to store photos. But the problem I am having is that how do you people view the photos easily when you need them? In the beginning I have ...
-1
votes
1answer
87 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 ...
3
votes
4answers
4k 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, ...
0
votes
1answer
446 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 ...
0
votes
1answer
225 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. ...
7
votes
6answers
3k 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 ...
0
votes
2answers
777 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 ...
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 ...
50
votes
7answers
12k 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 ...
1
vote
1answer
335 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 ...
26
votes
4answers
3k views

Do I lose anything converting to DNG?

I'd like to convert all my ARW (Sony) files to DNG for several reasons, but the only thing keeping me back from doing it is the fear of losing useful metadata during the conversion. I know that the ...
1
vote
2answers
164 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
289 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
7k 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 ...
7
votes
1answer
681 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?
14
votes
3answers
14k 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 ...
25
votes
7answers
13k 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 ...
0
votes
2answers
253 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
386 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
926 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 ...
17
votes
6answers
13k 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 ...
3
votes
2answers
4k 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 ...