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Questions tagged [file-size]

The tag has no usage guidance.

10
votes
8answers
5k views

“Optimal” size of a JPEG image in terms of its dimensions

I plan to write a script that will scan 100,000+ JPEG images and re-compress them if they are "too big" in terms of file size. Scripting is the easy part, but I am not sure how to categorize an image ...
0
votes
2answers
154 views

Why do different ISO images have different file sizes? [duplicate]

I set the ISO on my Canon 6D to 200: 1081 estimated shots remaining. I set the ISO to "auto": 728 estimated shots remaining. I'm shooting in RAW, if that makes a difference.
3
votes
1answer
172 views

Should I resize photos before or after image optimization?

I am a software dev who appreciates stunning imagry in sites I build, but am also very conscious of page size. My workflow has me adjusting image sizes to the maximum resolution they will be displayed ...
56
votes
15answers
23k views

Aren't all digital images ultimately just pixel values between 0 - 255?

I have a few incredibly basic (stupid?) questions about images; specifically, image formats and pixel values. Forgive me, I'm not a photographer. I'm just someone that works with images, and to me, ...
1
vote
2answers
170 views

Trying to understand losses in jpg compression

I have a bunch of jpegs taken with a Nikon D3200 at 6016 x 4000. They weigh between 9M and 12M each. To try and reduce space a bit, I compressed copies with the default Windows utility, and the new ...
6
votes
3answers
3k views

JPG and file sizes - BASIC facts for dummy

Am I losing quality of the pictures when the size of the file drops? My daughter is sending me some JPG pics to edit for her. The file sizes start around 11MB & 3264x4928. After I do some mild ...
0
votes
1answer
122 views

Do high export resolutions compromise image safety? [duplicate]

I specialize in macro photography and I've recently begun to export in 300-350dpi, as I find it does a better job of representing details (crucial to my work). However the file size is small, eg. ...
0
votes
2answers
178 views

How to save pictures for websites

I put HD pictures on my website and it takes a lot of time for them to load. I've then tried re-saving them using Photoshop CC as jpeg and choosing 1 in the compression scale (going from 1 to 12). ...
3
votes
2answers
218 views

How to resize images in place in Lightroom

Generally, I take and store all of my images in RAW in Lightroom. If I capture a beautiful moment, I want to be able to access all of that beauty at any time in the future. But there are exceptions. ...
0
votes
1answer
641 views

What's the Largest File Size that PhotoShop CS 5.1 can Handle?

I'm building a large landscape montage using about 50 RAW images at 16Mb per image. I've successfully managed processing montages before that were 1.5 Gb but over the course of the few hours it took ...
3
votes
2answers
2k views

What application can rotate a TIFF without re-encoding it?

This is a followup to a question at Apple.stackexchange.com, Why does rotating a TIFF in Preview increase the file size? One thing I don't like about Preview.app is that even something as simple as ...
-1
votes
1answer
1k views

Optimal DPI Setting in Olympus OMD EM5 mii? [duplicate]

I had been using the default 350 dpi, but the resulting files are too small to sell to most stock photography sites online. For a standard print at 300dpi, they are great. A bit low for my metal art, ...
0
votes
2answers
3k views

How to increase/decrease image size without changing dimensions or dpi

I have 50 photos with different size from 50 KB to 70 KB. I want all photos tobe in 60-70 KB size without changing the dimensions, dpi, or bit depth.
-1
votes
1answer
131 views

How can I automatically downsize images which have more pixels than needed for the actual resolution? [closed]

Many factors affect the true resolution of an image — the actual detail resolvable — including lens quality, sensor size and technology, noise and noise reduction, motion blur and camera technique, ...
2
votes
5answers
896 views

How to know if a picture has too many pixels?

I have pictures from three sources, a Galaxy note 3 phablet, a Ricoh WG-M1 sports cam, and a Canon EOS 600D. I did set the EOS 600D to store as jpeg, and my pics are typically between 2.5 and 4.5 MB, ...
7
votes
5answers
3k views

Does the detail in an image affect how large the image file is?

I just took two photos on my smartphone. One of a table surface with nothing on it and another of a cluttered table top full of detail. The clear photo was 3.5 MB and the cluttered one was 5 MB. How ...
7
votes
1answer
3k views

Why does file size increase so much when converting from RAW to TIFF?

I have been converting .CR2 files (Canon's RAW format) to TIFF files to make a timelapse video in Photoshop. Upon doing so I was astonished to realise that the file size rocketed from 23.9MB in the ...
0
votes
2answers
255 views

Files from my camera are very large: does this present any problem?

I have a Nikon D3200 camera. When it takes pictures in high resolution, sizes can be up to 6016×4000 pixels. Is there any problem (apart from big files) having the pictures at this resolution? Would ...
1
vote
2answers
294 views

In Photoshop Elements, how much is image quality reduced if I re-save a previously saved “small” JPEG as a “large” JPEG?

Back story: I took a picture of a flower in RAW. Pulled it into ACR in PSE 12, moved it to the Photoshop Elements editor, made a few edits, then saved it as a "small" JPEG. When saving a pic in PSE, ...
1
vote
2answers
173 views

Why is my Sony A57 creating low res JPGs?

I have used a Sony A57 since they became available. I always have the resolution set for 16M and FINE for JPEGs. I just took an important set of photos that were intended for large blow-ups. But ...
1
vote
1answer
2k views

How can I target a specific size in megabytes when saving a JPEG in Photoshop?

I need to save several files as 20mb jpgs. When I save an image in Photoshop CS5 at 20mb, then go to that saved file in my folder, it shows as a much smaller file. Is there a formula for hitting that ...
5
votes
2answers
890 views

Where is a camera's preview image stored, when shooting in RAW?

When you take pictures in RAW, the camera stores a preview image (possibly jpeg) that it shown on the screen using white balance and other adjustments set in the camera. Where is this information ...
4
votes
3answers
673 views

Can I enable pixel binning on Canon PowerShot G1X?

On my camera, a Canon PowerShot G1X, I can select picture sizes from S to L. Now I wondered, if I select a smaller picture size, that would theoretically lead to more sensor surface per pixel, ...
1
vote
3answers
1k views

Are 24MB JPEGs sufficient for stock photography?

I have an EOS 60D that has 18Mpixel. An expert said I should use at least 24MB pictures for stock photography. My 18Mpixel Jpeg at 72 DPI are between 5MB and 14MB. What is the purpose of a 24MB file? ...
0
votes
1answer
2k views

Can a 2 mp camera produce a 2 mb sized file? [duplicate]

Yesterday I was taking some photos with my old phone, the Nokia C3-00. It has a 2 megapixel camera and usually creates images somewhere between 400kb - 800kb in size. Yesterday, though, it produced an ...
0
votes
1answer
135 views

Is this file size adequate for jpeg images?

While my photos usually are ~ 150kb average, I find some to double that size under the same settings. Specially Black & White photos. Is this size normal, because of the amount of different tones ...
1
vote
2answers
1k views

Should two identical digital pictures of the same resolution and format have the same size?

I apologize if this is the wrong stack exchange site, but I thought my question might be too specific to photo encoding for stack exchange. I recently recovered a host of digital picture files from a ...
3
votes
1answer
738 views

Why is there such a big difference with these JPG file sizes?

I have 2 nearly identical JPG images that have been processed externally, but one file is much larger (in file size) than the other. I have been looking at all the metadata and embedded information ...
3
votes
3answers
6k views

Why does simply saving a JPEG at 100% quality in Photoshop increase filesize?

If I take a picture taken with my EOS 60D, put it into Photoshop, edit it as I wish and save it as JPEG with maximum quality, the file goes from 5 to 12 mb in size. Obviously if I didn't increase the ...
0
votes
4answers
21k views

Reduce photo size to less than 20kb [duplicate]

I am trying to reduce image size to less than 20kb (Dimension 940*884 )for a eCommerce website. Using features of photoshop cs6 I am able to reduce image size to around 65kb. Below which the image ...
0
votes
0answers
43 views

Does this appear correct? Comparison of PSD & TIFF file sizes when using adjustment layers. [duplicate]

I've been investigating file sizes after noticing my 16 bit TIFF files grow enormously after adding adjustment layers (saving with layers, not flattening). Here's what I found: File #1 (0 layers) ...
2
votes
1answer
977 views

Why do my tiff files balloon in size when saved with 1 adjustment layer?

I'm having an issue with tiff files that I can't figure out. Here's an example: I open a 40 mb tiff, add one curves adjustment layer, and save the file normally (i.e., using LZW, Interleaved, IBM PC, ...
2
votes
3answers
47k views

How can I check free space on my memory card on a Nikon DSLR?

Currently I'm using a 4 GB memory card for shooting RAW on D5100, but how can I find the available free space on memory card from the camera? The number of shots remaining is so misleading!
1
vote
1answer
14k views

How to resize images in Lightroom to a particular file size?

How would I create a preset to export files to a given file size? I need to be able to export a 2mb file for a realtor.
3
votes
2answers
458 views

How do I prevent photoshop shrinking my RAW files?

Converted a RAW image to DNG but photoshop resizes them from 30mb to 8.5mb ?
3
votes
4answers
19k views

What image quality is lost when re-saving a JPEG image in MS Paint?

Has anyone ever noticed that if you open a image in mspaint (.jpg, .jpeg) and then just save it, the image size is reduced by many folds. I use this method to reduce the file size. However, I am not ...
-2
votes
3answers
664 views

If I use an iPad mini to back up RAW captures, how many files can I store?

I am thinking about acquiring a 64GB iPad mini and other than its other purposes, use it for back up for RAW captures on my Nikon D80 while on vacation. I'm wondering approximately how many RAW files ...
2
votes
2answers
749 views

How do I convert/re-compress select photos in Lightroom in-place?

As my Lightroom catalog grows there are some photographs I would like to preserve, but where I don't need all the editing latitude offered by RAW. I know I can convert them to DNG, but are there ...
7
votes
10answers
78k views

How to reduce file size without losing quality or resolution?

I have 2,300+ pictures that I want to transfer to my phone but on their original size they take up a lot of space (6.44gb) I would like to trim is down to without sacrificing quality or resolution. I ...
14
votes
2answers
517 views

Why is the amount of photos that fit on one card dependent on ISO?

I have a Canon 550D with a 16GB SD card. I noticed that, when in P-mode, if I choose an ISO of 100 I can shoot 595 raw files on an empty card. If I choose an ISO of 200 this is 590. And if I choose ...
9
votes
4answers
25k views

Why are two pictures that are the same dimensions/dpi such different file sizes?

I am working on a project where two my images must be AS SMALL AS POSSIBLE. I have scaled two images to the same dimensions/dpi and I've checked the color profile in Photoshop CS6 and they both look ...
3
votes
2answers
11k views

Reasonable file size for printing high quality photography as A3 posters?

I bought some photos and need to send them off for printing. The printing company asked for the final files to be in PDF format, so I've converted them using Illustrator and Photoshop. I also added a ...
7
votes
4answers
7k views

RAW to TIF conversion creating GINORMOUS TIF Files

My wife is a photographer (Nikon D700, edits in Win7 Adobe CS5 suite) and mentioned yesterday that she's out of hard drive space. When I inspected, I found GIGANTIC .TIF files on her drive, ranging ...
0
votes
3answers
868 views

Highest quality vs smallest file size for email

I'm intending to create some photographic images for printing. They'll be used to hang on a wall but will be quite large (80 - 100cm square). Obviously I want the quality to be as high as possible, so ...
3
votes
2answers
6k views

Nikon d5100 memory card capacity for NEF+JPEG(fine)

I just bought my first dslr (Nikon D5100) and I'm looking for an sd card to go with it. I would rather have just one card so I thought about 64GB SanDisk Extreme (45MB/s), however I don't know if I ...
5
votes
2answers
756 views

What is the effect of long exposure on file size?

Is it a rule that long exposure will produce a larger size file compared to a shorter exposure? It seems logical, since you are writing more data to the memory card when you expose for more time. ...
1
vote
1answer
1k views

Can a Pentax K-5 record more than 4 GB of video with an SDXC card?

When using an SDHC card, the Pentax K-5 can only record up to 4 GB of video in a single clip. This is said to be because SDHC cards use the FAT32 file system, which has a 4 GB maximum file size. At ...
6
votes
1answer
1k views

Why are my photos taking too much memory?

I have a Canon 5D mark II. The weirdest thing happened today. I was shooting with a 4 GB memory in Raw and Jpeg and was only able to shoot 34 pics. I looked at my settings and couldn't figure out what ...
7
votes
4answers
4k 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 ...
1
vote
5answers
2k views

How does optimizer software reduce file size without reducing resolution?

There are numerous applications for reducing filesize. Most of them reduce resolution (e.g. from 300dpi to 72dpi) or reduce height and width. I tried http://www.imageoptimizer.net/ Surprisingly, when ...