What resolution is needed for 24x36 print?
For normal quality output, your original file should have 300 dpi resolution at 25% of the final output size. (this means for a 24 x 36 poster, your original file should be at 300 dpi and 6 x 9).
Check the field for “Size.” For a large poster (24×36 inches), you will want the size of the file to be in the range of 500 KB to 10 MB. For smaller prints like 18×24 inch posters, you will want to make sure the picture is above 250 KB.
Typically images will be supplied as JPEGs, and an A4 (210mm x 297mm or 8¼” x 11¾”) image at 72 ppi will create a JPEG of approximately 500kb or half a megabyte. Remember though – to use that image in print we need the image to be 300 ppi, and at that resolution the JPEG will be around 3.5 Megabytes.
As a rough guide a 20KB image is a low quality image, a 2MB image is a high quality one.
24x36 simplifies down to 2x3 or 2:3. Print sizes in this aspect ratio are 4x6, 8x12, 10x15, 12x18, 16x24, 20x30, and so on.
PRINT SIZE | 125 PIXELS PER INCH | 180 PIXELS PER INCH |
---|---|---|
24 x 24 | 3000 x 3000 | 4320 x 4320 |
24 x 30 | 3000 x 3750 | 4320 x 5400 |
24 x 36 | 3000 x 4500 | 4320 x 6480 |
30 x 30 | 3750 x 3750 | 5400 x 5400 |
For a photo quality print you should be between 240 - 300 dpi resolution. Less than 240 dpi there is not enough data to give a smooth, continuous color rendition (the empty space between the pixels will degrade the photo).
Print Size in Inches | Web 72 ppi | Good 150 ppi |
---|---|---|
10 x 15 | 0.78 MB | 3.4 MB |
11 x 14 | 0.8 MB | 3.5 MB |
12 x 18 | 1.3 MB | 4.9 MB |
16 x 20 | 1.7 MB | 7.2 MB |
Figure 6 An A4 grayscale image at 300 dpi is calculated below at 8.6 MB in size. In reality it is closer to 8.7 MB simply because the dimensions of an A4 page are larger than 8 x 12 inches.
Filetype | 3 Mp Image | 15 Mp Image |
---|---|---|
JPEG - 100%/Adobe 12 - 24 bit RGB | 2.6 Mb | 10.2 Mb |
JPEG - 94%/Adobe 10 - 24 bit RGB | 1.2 Mb | 4.5 Mb |
JPEG - 75%/Adobe 6 - 24 bit RGB | 0.5 Mb | 1.8 Mb |
TIF - uncompressed - 24 bit RGB | 9.2 Mb | 44.1 Mb |
Is 4 MB a good quality photo?
Any image file less than 1MB will probably not be much use for high quality printing (unless it's going to be very tiny). Don't try to scale or touch up a low res photo. Send it to your designer for evaluation and they'll be able to tell you if it's useable.
Small (10 – 100 KB) Medium (100 KB – 1 MB) Large (1 MB – 16 MB) Huge (16 MB – 128 MB)
The average file size of a smartphone mobile phone camera picture is about 3MB.
2400x1600px, jpeg, saved for web, and optimized
To ensure that your full width images look good across any device big or small the recommended size is 2400x1600px. Note that devices have different ratio than the one you shoot and it is possible your images will be cropped when viewed on web.
Usually A 5mb JPG should get you an 8x10 print because I expect it to have 2400px x 3000px. Only time the file size could be misleading is if the image was compressed into a 2mb file. A 1mb JPG file should get you a decent 4x6 photo.
Paper Size | Approx | |
---|---|---|
Name | Notes | inch |
6xA4 | Noticeboard | 19 x 38 inch |
A1 | 23 x 33 inch | |
24x36 | Maxi | 24 x 36 inch |
24×36 inches (609.6 x 914.4 mm) is also known as Architectural D sized paper, which is another standardized paper size.
The number of pixels in one megabyte depends on the color mode of the picture. 8-bit (256 color) picture, there are 1048576, or 1024 X 1024 pixels in one megabyte. 16-bit (65536 colors) picture, one megabyte contains 524288 (1024 X 512) pixels.
The resolution of each image in your poster should be 150-300 dpi (or pixels per inch) at the final printing size. Resolution below 150 dpi will result in a pixelated image.
24 megapixels is the sweet spot for value and can produce a beautiful fine art print at 20 x 30 inches or a huge canvas print 60 inches wide.
Is 600 DPI too much for print?
Most businesses consider 600dpi and higher to be a high-resolution image or print. High-resolution images require more memory to store and can take longer to scan.
For the average photographer, 1200 dpi is excellent. These specs are within reach of most printers on the market. When a printer prints above 1200 dpi, it's nearly impossible to see any difference in the prints.
We can calculate that. Let's say our camera produces a photo with an image resolution of 1920x1080 px (1080p), and we want to print at 300 dpi, we use the formula px ÷ dpi to get the maximum print size at the given print resolution (dpi). We can make a print that is 6.4 x 3.6 inches (16.26 x 9.14 cm) @ 300 dpi.
The number of Kilobytes (KB) or Megabytes (MB) in your computer file roughly corresponds to the number of pixels and megapixels. For example, 2MB photo file will have about 2M (Megapixels) and is good to be printed as 6″x4″. 3.
When creating a large format image, we generally recommend designers work with at least 300 dpi.
That is, the number of pixels in the width and the number of pixels in the height. Changing the print resolution does not change the number of pixels, and therefore has no effect on the file size.
Image Dimensions in Pixels | Printed Size (W x H) | Approximate File Size (CMYK Tiff) |
---|---|---|
1024 x 768 pixels | 3.41" x 2.56" | 3 Mb |
1280 x 960 pixels | 4.27" x 3.20 | 4.7 Mb |
1200 x 1200 pixels | 4” x 4” | 5.5 Mb |
1600 x 1200 pixels | 5.33" x 4" | 7.32 Mb |
output size | 100 DPI | 200 DPI |
---|---|---|
9x12" | 4 MB | 13 MB |
11x14" | 5 MB | 18 MB |
12x18" | 6 MB | 25 MB |
16x20" | 9 MB | 37 MB |
engl. unit of length | 1 Inch = 25.4 mm |
---|---|
dots per inch | 1 dpi = 1 Dot per Inche(25.4 mm) |
pixel per inch | 1 ppi = 1 Pixel per Inch(25.4 mm) |
digital unit of measurement | B = Byte 1 bit = 0 | 1 1 B = 8 bit 1 kB = 1024 B 1 MB = 1024 kB |
the image is a 4 MB download. the image size is 5568 x 11136 pixels x 24-bit colour. the picture will therefore take about 180 MB of memory to display. if you have less than 256 MB physical memory available, your computer may slow or hang when displaying this size of image.
How do I make a JPEG less MB?
- Select the picture you want to compress.
- Click the Picture Tools Format tab, and then click Compress Pictures.
- Do one of the following: To compress your pictures for insertion into a document, under Resolution, click Print. ...
- Click OK, and name and save the compressed picture somewhere you can find it.
Computer memory manufacturers use 1024 bytes/KB. There are 1024 Kilobytes (KB) in a Megabyte (MB). Hence, 2MB = 2044KB … 1024 Megabytes = 1 Gigabyte (GB); 1024 Gigabytes = 1 Terabyte (TB), etc. etc.
At 300 pixels per inch (which roughly translates to 300 DPI, or dots per inch, on a printing press), an image will appear sharp and crisp. These are considered to be high resolution, or high-res, images.
The amount of data in a megabyte is roughly the same as a low resolution photo, or one minute of "high quality" music streaming. With 500MB, you could listen to just under 7 hours of "high quality" music. If you're streaming video, get ready for much larger files.
To give some perspective, 100 MB of data will be enough to: Send and receive 100 text emails, including attachments. Browsing the web for approx. four hours, without downloading pictures and videos.
...
Reference 10592.
Part | Size |
---|---|
Part 2 | 6.4MB |
In this case, image sizes are measured in pixels multiplied together. An 8 megapixel image is 3456 pixels wide and 2304 pixels tall. When you multiply the two numbers together you get your overall megapixel size; in this case, that's 8. A 12 megapixel image is 4000 pixels wide and 3000 pixels tall.
DSLR (Standard) | Smartphone | |
---|---|---|
128GB | 13104 | 25200 |
The medium size JPEG file is 2400×3600 pixels when it is at the 8″x12″ proportion. This means there are 300 pixels per inch, and that is a photo quality print at 8″x12″ size. Large size is for printing a poster or anything larger than 8×12.
Right-click on the image and then select "Properties." A window will appear with the image's details. Go to the "Details" tab to see the image's dimensions and resolution.
How do I make a JPEG higher quality?
- Open your image in Lightroom.
- Choose Photo > Enhance.
- Select Super Resolution.
- Click Enhance.
- Lightroom will increase your image resolution and save it as a new DNG file.
Copying the JPEG file won't affect the quality, only opening it and saving it again will do that. Opening the JPEG and by saving it as a lossless TIFF or DNG file, you will prevent further degradation when working on the file.
Canvas Size | Minimum File Size | Minimum Pixels |
---|---|---|
8x10 | 100kb | 640x640 |
11x14 | 200kb | 720x960 |
16x20 | 1mb | 960x641 |
20x24 | 1.4mb | 1920x1080 |
Compression massively reduces file size, but the open file remains the same size. A jpg with compression that remain at 5 GB would have to be an absolutely massive file to start with, however a open file that was 5 MB as a jpg would be not that large. For a 16 bit file 5 MB is pretty small.
The resolution of each image in your poster should be 150-300 dpi (or pixels per inch) at the final printing size. Resolution below 150 dpi will result in a pixelated image.
We can calculate that. Let's say our camera produces a photo with an image resolution of 1920x1080 px (1080p), and we want to print at 300 dpi, we use the formula px ÷ dpi to get the maximum print size at the given print resolution (dpi). We can make a print that is 6.4 x 3.6 inches (16.26 x 9.14 cm) @ 300 dpi.
- Unsplash. Unsplash has a large selection of high-resolution images and stock photos. ...
- Stocksnap. On StockSnap, you can find a vast array of images. ...
- Pixabay. On top of having a large photo library, Pixabay also offers illustrations, vector graphics and more. ...
- Pexels. ...
- Skitterphoto.
Large Canvas Prints
Digital photos of five megapixels (2560 x 1920 pixels) or more will generally work well. For canvas prints larger than 36x48, it works better to print your canvas and ship it to you rolled up. Buy your stretcher frames and stretch the canvas yourself, or have a local framing shop do it.
The number of Kilobytes (KB) or Megabytes (MB) in your computer file roughly corresponds to the number of pixels and megapixels. For example, 2MB photo file will have about 2M (Megapixels) and is good to be printed as 6″x4″. 3.
How big can you print a JPEG photo?
Pixel Dimensions | Full-Resolution Print | Largest Print Possible |
---|---|---|
1200x1800 | 4" x 6" | 12" x 18" |
2000x3000 | 6.7" x 10" | 20" x 30" |
3000x4500 | 10" x 15" | 30" x 45" |
4000x6000 | 13" x 20" | 40" x 60" |
Figure 6 An A4 grayscale image at 300 dpi is calculated below at 8.6 MB in size. In reality it is closer to 8.7 MB simply because the dimensions of an A4 page are larger than 8 x 12 inches.
Is 300 DPI better than 600 DPI or does it work the other way? It depends, in fact, on what you are printing and what material is used. A higher resolution might be needed for glossy photos or images with lots of details that need to be crisp. Then 600 DPI could be a better option.
...
Prints.
Desired Print Size (in inches) | Megapixels Required (for 300 PPI print) |
---|---|
6x4 | 2.2 MP |
5x7 | 3.2 MP |
8x10 | 7.2 MP |
11x14 | 13.9 MP |
Having 200 to 300 pixels per inch is a general rule of thumb for print. To produce a 20″x30″ poster, that would put your starting size at 4000 x 6000 pixels, or about 24 megapixels.
24 megapixels is the sweet spot for value and can produce a beautiful fine art print at 20 x 30 inches or a huge canvas print 60 inches wide.