Photoshop :: Resolution And File Sizes
Oct 15, 2005
This question may seem obvious to some of you but I'd like to understand this issue. I've been taking digital photos in Raw format for use in photoshop, I'd eventually like to send them in to a stock photography site and the one I'm thinking of applying to, Alamy, demands file sizes of 48MB+ per photo in TIFF. I've been uploading them from my camera onto my hard drive and they end up just short of this required file size, around 46MB. Unfortunately a 1GB flash card full of Raw images, when converted to this size, eats up a lot of memory. I don't think I can use all the images for stock photography anyway so I started looking at how I can affect file sizes under "Image"-"Image size" so I can clear up some memory and I've noticed I can play around with the image size if I change the resolution. Currently the 46MB photos are at a resolution of 2000, if I change them to 300, the resulting file size is just over 1MB, which is great because the ones I can't use, I can still store at a reduced size and clear some space on the old hard drive. But I've noticed I can take the same converted 1MB image, change the resolution to 3000 and end up with a 105MB image. OK "So what's your problem?" you might ask. Well, where's all this extra resolution coming from? I can make it go up and down as I please and I have no idea how this is even possible. Shouldn't reducing resolution from 46MB to 1MB forever reduce the quality of the image? How is it possible to go back to the original size or even increase it?
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Apr 26, 2011
I've received several scanned images from another party in .jpg format. The file sizes of some run about 100k and others about 300k.
When I looked at the image properties they were almost the same for each of them. All of them had a resolution of 96x96 and each having around 40,000 pixels (roughly 500X800 pixel images). The print sizes were all about 5.5x8.5 inches.
Why would .jpg images with similar pixel resolution and number have such different file sizes?
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Mar 19, 2013
I am a Mac user. When I go to create PDF's,each sheet comes out quite large. Can I create smaller PDF file sizes without loosing resolution?
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Jul 5, 2013
Our 18MB 14-bit Canon camera produces RAW images (converted to uncompressed DNG) that are about 22MB. On a Win7-64bit CS6 workstation, the PSD file that is created from the DNGs has the following sizes (single layer, no masks/paths, maximum compatibility):
16 bit, DNG as smart object: 207MB (10x of the DNG)16 bit, DNG as rasterized layer: 187MB (8.5x of the DNG)8-bit (less information than the DNG), DNG as smart object: 115MB (5.2x of DNG)8-bit (less information than the DNG), DNG as rasterized layer: 95MB (4.3x of DNG)
a blank 8-bit image with a white background layer saves as 818KB, adding a few scribbles with the brush tool saves the file at about 30MB.
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Mar 5, 2012
I would like to use pics from my digital camera on the web.How can I reduce file sizes for use on the web.Everyone seems to have a maximum file size when uploading.
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Mar 22, 2008
Gif 64 dittered default CS2=2.63KB CS3=4.83KB
JPG CS2Low=1.42KB CS3=4.03KB
JPG CS2Medium=1.90KB CS3=4.51KB
JPG CS2High=3.38KB CS3=5.99KB
Is there any solution besides keep using CS2 for web?
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Mar 27, 2013
I work with 2 different Mac Pro towers. The one at my home has Photoshop cs4 and the one at my studio has Photoshop cs6. The other day I noticed that Finder on my studio computer shows the file size to be twice as big as the finder on my home computer. The pixel dimension size doesn't change, just the file size. It shows up that way after I save it on my studio computer. If I take that file home and resave it on that computer then the Finder shows the smaller file size again. I guess the questions I have are: Is the file size is actually increasing and if so, what could be causing that to happen? Photoshop shows the files to be the same size, but in the Finder window is where I see the difference.
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May 30, 2013
I am using meta data "description" menu to add meta data to web images.The basics:title
description
keywords
copyright
That is about it for my application....so far and like I say it is just for web images at this point. At any rate to me surprise I did not realize how much the meta data added to file size.I had assumed it was minimal but in fact that is not the case. Meta data ends up adding a lot.
Question:
So is there a way in Photoshop to see what the final file size will be with the meta data included as I have found, so far, is the image itself file size when I view the
"Saving for Web & Devices" menu screen.Also tried the "Info" menu and neither indicate the meta data additions into an images file size.
One of the reasons is, of course, that I would like to get as many keywords in there as possible, as an example lets say this was the logo or site's header and they have a lot of different products.
The more keywords the better the SEO results will be. I am sure this statement in itself is disputable but as of now 5/2013 it appears that way as far as SE's are concerned.Tested this extensively and the result were remarkable, but that is another story.
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Aug 7, 2013
I recently upgraded from cs5 to cloud and all of my psd / psb files have doubled in size. I thought it might have something to do with the sync to the cloud, but I don't believe this to be the case. I messed around with the file handling section under preferences but nothing has really made any difference.
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May 6, 2013
I'm on a Mac running OSX 10.8.3 and lately I've been losing presets when Photoshop CS6 crashes or I have some other unrelated problem. First it was brushes-I lost the palette of brushes I had built over years and had to drag in an old set from a networked computer. Then it was Workspaces; same tedious solution. Now, after I had to reinstall the OS two days ago, I've lost the custom size presets under File/New/Presets/Custom. But it isn't clear where these presets reside in the system: the prefs, the app plugins, or the settings. Where are they stored, and why all these preferences or presets seem to be more volatile in CS6 than they were previously? Or is this all a fig newton of my imagination?
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Jun 22, 2006
Im currently trying to produce some banners that are quite large 80 inches x 34. I dont know how to scale that down to a managable canvas in photoshop but at the same time not loose any quality.
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Jul 28, 2013
It appears the PSE Editor does not display .PSB files. Is that correct? What are the file size limitations?
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Feb 25, 2013
When I capture the same vedio from DV Camcorder without Split Scenes, the single file size is 25GB; with Split Scenes(Timecode), the total file size is about 12GB in the folder.
What is the pros/cons of the two methods?
I am using Premiere Elements 11, Win7;
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Feb 22, 2014
I'm using Elements 11. In order to add watermarks to many JPG pics at once, I use the function "Process Multiple Files".
I select a source folder and a destination folder, and adds a three digit serial number to each file. I do NOT tick the checkbox marked "Change picture size". After that I define the watermark I want printed on my pics and hits OK. All the files in the source folder are processed and saved, with a new name in the destination folder. Fair and square.
But. The file size of the new file is heavily reduced, compared to the original. It goes from 10 MB down to 500 KB (in general). Why is that? Is there any way I can prevent it?
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Sep 12, 2013
I have exported photos to my harddrive as jpegs that are less than 1mb but when I try to upload them for an assignment on the school website they are 25 mb??
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Jul 2, 2012
When i apply a preset to a photo, then export it ... the file i end up with is significanatly smaller than my original file ? These same presets resulted in as large / or in most cases larger files sizes in previous versions of lightroom ...
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Jun 27, 2012
I'm baffled. I do 99.9% of my photo work in Lightroom and then export to jpg. On the rare occasion when I need to remove something from a photo (a fly or leash), I have been using PSP version 9 because I already have it.
However, this morning I opened an 8 Mb jpgs file, did my editing and just saved it (no save as or resizing), and now the file is only 2 Mb.
What the heck? [URL]....
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Jan 8, 2012
version: PSPx4 SP1
OS: Win 7 Pro
When saving JPEGs, I seem to be getting wildly different resulting file sizes, depending on whether I've used Save or Save As. Case in point:
original file size from camera: 6194 KB
Save / Standard encoding / compression factor 2: 1875 KB
Save As / Standard encoding / compression factor 2: 5184 KB
Save / Lossless encoding : 1875 KB
Save As / Lossless encoding: 7235 KB
It seems to me that with x2 (my previous version), I could set the low compression factor, and the resulting Save file would actually be larger than the original. I want to be able to save with minimal compression (but I don't want to mess with TIFFs), and I need to know if I should now be using Save As instead.
Is this as designed, is it my imagination...what's going on?
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Nov 8, 2012
I have this drawing file that has suddenly been growing larger and larger in size. There has not been enough information added to justify such a large increase:
Capture2.JPG
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Aug 22, 2010
When making new artboards:
1. how do you make it so it is a multi-page document for printing?
2. can you have artboards that are different sizes as part of the same file?
3. what is the point of changing the order of artboards?
4. do you use extra artboards for coming up with ideas off of the main canvas? because it seems you could also do this just outside the boundaries of the main artboard.
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Jun 19, 2013
My coworker and I both have the same version of Illustratir (CS6) and both use Lion on iMacs, but today noticed something weird. He saved a file similar to a file I had done before as both an eps and a pdf and his file size was more than twice what my file sizes usually are. I thought it was odd, so I copied everything from his file into a new file (same dimensions) and saved out an eps and pdf (default settings), and like I thought, my files were less than half the size of his.
Why would two machines be saving identical files at different sizes? Is there a setting somewhere I'm missing? Everything in the file is vector, if it matters. There's not even any editable text.
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Jul 20, 2010
I am making very detailed artwork in Illustrator that ultimately has to be uploaded to a website as a pdf file. This artwork takes ages to save and when converted to pdf format, even at the lowest quality pdf, the files are huge. What is the best way to get the file size down? Turning the files into low res jpegs somewhat defeats the purpose of making detailed vector art in the first place.
The artwork has a lot of repeated elements that could be turned into symbols but I'm told this doesn't fix the problem of huge pdfs.
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Apr 22, 2012
I am working on bringing files into Lightroom 4, most DNG files from a Canon 5D and DNG and TIFF files from a Nikon scanner. The problem I'm having is that after importing the files into the Folder in which they will all be for the catalogue, they are significantly smaller. For instance, a DNG file from a 6x9 film scan is 600MB in the original folder, then is 420MB in the new folder after being renamed and imported into Lightoom. Similarly, a 20MB DNG file from my Canon 5D is 8MB after importantion. Also, the backup of the original that is made upon importantion, remains at its larger size on my external drive. I do not believe that I have anything set in Lightroom to do this, the only setting I've touched in the import process are renaming the file, placing a backup, and adding tags. I am not doing anything in the development dialogue box. Is there a reason that these files are so much smaller? I'm worried because 30% decline in the case of scans is a lot of data, as if the 70% decline in my Canon 5D file.
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Sep 2, 2012
I had read that when I convert to DNG in Lightroom (v4), the file sizes will drop by about 20% (I checked the check box for compression). I'm converting from a batch of 16-bit NEFs I created when scanning slides using the Nikon LS-5000 scanner. Those scans and files were created with Nikon Scan 4.0. After doing the conversion in Lightroom, the DNG file sizes are around 3MB-17MB. The original NEF files were about 135MB. Where in the world did all my data go? I'm concerned that the conversion to DNG threw away a ton of the original data. How is that much of a reduction possible? I'm hoping that there wasn't some catastrophic problem during the conversion, as I also checked the check box to delete the originals after the conversion is finished.
The image quality seems to be okay when looking at the DNG files in Lightroom.
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Jul 8, 2013
I am having trouble with Lightroom 5 exporting images at incorrect file sizes. For example, if I use my export preset for images with long edge 2500 pixels and maximum size 1000k it is exporting images at 1500-2500k.
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Mar 19, 2012
I do beer signs for a living. Sometimes I like to import other coreldraw files into my current work to take designs off of them, such as a curve or a portion of text. I then delete the unused parts. The problem is that whenever I do this, it makes the save file huge!
You can test this. Open an empty coreldraw file. Drag a few .cdr's into it. Delete everything you imported. Save the empty file. It will be the size of all those .cdr's combined!
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Dec 1, 2013
I have been revising some older blocks dating back to 2003 and earlier. What was a file size of 28KB increased to 127KB! In most cases the only change was converting text to an attribute. As a test I took a 2004 file and saved it - with no changes - to another name and the file size increased from 28KB to 124KB!!! That's an increase of over 4.4 times! Many of my 1998 - 2006 files are in the 26KB - 40KB range.
That's a bit much of an increase over several ACAD versions! Is there a way to reduce the file size? I did perform a complete Purge before saving. Have I missed some clever trick?
I am running ACAD Version 2014 with SP-1.
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Aug 30, 2012
So, I was photographing the moon tonight and shooting in my usual format - RAW. I took the photos into Lightroom and selected the one I liked best. After tweaking the contrast and clarity a little, I decided that I wanted to change around where the moon way positioned - in a way crop wouldn't allow. So I turned to "edit-in" and then selected Photoshop CS6 from the options. All was fine, Photoshop appeared and I began editing. I decided that I wanted to place my moon in a completely different location, so to do this I decided I'd select the area around the moon, copy it, paint over it, then paste the moon back onto a new layer and paste it exactly where I wanted it. I think this is why I'm having issues. All was well and it was time to save. I hit save...suddenly it was taken ages to save. I'm talking at least 2 minutes of save time. Realising that was odd, I decided to check out how big the new file was...nearly 1GB big as a TIFF.
I don't like saving my photos as anything other than TIFFs, but I don't have unlimited storage space.
Why was this file so huge after editing in Photoshop, how do I avoid it/what did I do wrong?
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Sep 5, 2013
I think monitors were all 72ppi, so if you made an image for the web or display on monitor, you made it 72ppi. Now that it seems like monitors are getting higher resolution specs, what does that mean for image resolution?
1. What does 72ppi equate to in terms of monitor resolution?
2. How many ppi should files be made if they are going to be displayed on higher resolution displays, such as Apple's Macbook Pro Retina displays?
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Apr 9, 2013
problems with the Export to JPEG dialog.
1. It does not show the original file size. At one time I used this as a cue to see if I had forgotten to resample.
2. After the installation of version 16.3, the displayed compressed file size is no longer accurate. It varies from perfect to reading 25% too high.
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Sep 29, 2005
I originally created my company logo in Photoshop at 72 Resolution. I saved the logo as a TIFF file and transfered it onto my Microsoft Access database to show on my various reports.
When I printed it out the logo was grainy - There were grey specks surrounding the image as well. I talked to a local graphics person in my area and they told me the problem was the resolution of the image.
I re-created the logo at 600 resolution and saved the file again as a TIFF file. I transfered it again onto Access AND SURE ENOUGH when printed, the image was just as grainy.
How can I get a sharp & clean image? And what format should I save it in?
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