| Author | Thread |
|
|
02/11/2008 06:03:34 AM · #1 |
| can someone please tell me how to calculate how big i can print my photos.thanks. |
|
|
|
02/11/2008 09:04:03 AM · #2 |
It really all depends on if you plan to interpolate the file and what dpi your having the images printed at which of course will depend on who is printing the images.
for example, smugmug recommonds minimum original filesize of AT LEAST 1280 x 1620 for a 24x36 print and 1200 x 1600 for a 30x40. 40D is quite a bit higher res than that so you should be able to go even larger. Your best bet would be to find a printer and see what that specific printer recommends. |
|
|
|
02/11/2008 09:26:47 AM · #3 |
The 40D has a resolution of 3,888 x 2,592, which (theoretically, and if my math is correct) at 300 ppi gives you a maximum print size of 12.96 x 8.64 without any kind of resampling. Dropping the ppi down to 240 would give you a 16.2 x 10.8 print and still give you an acceptable print. BUT, you can resample your image in Photoshop, or use a program like Genuine Fractals to give you a larger print. If resampling in Photoshop, it's best to do so in small increments, like increasing by 10% until you reach your desired size. I've made nice 20x30" prints for walls from my 8.2 mpixel 20D or 30D this way, which leads into another factor: viewing distance. Most people don't look at a large print from the same distance they would look at a 4x6" print. Some say take a diagonal measurement of the photo and multiply that by 1 to 1.5 to give you an acceptable viewing distance. Hope that makes sense and I'm not too far off, it's early and I haven't had my coffee yet. :-/
Luminous Landscape has a nice tutorial on resolution, and  Konador put a great video tutorial together with lots of good tips in there. |
|
|
|
02/11/2008 03:23:51 PM · #4 |
You can away with a big increase in print size without too much loss of quality nowadays. I have a 3ftx4ft print of one of my pics on my wall printed onto foamboard from my dad's company. The interpolation is excellent and even up close the pixellations are minor.
|
|
Home -
Challenges -
Community -
League -
Photos -
Cameras -
Lenses -
Learn -
Help -
Terms of Use -
Privacy -
Top ^
DPChallenge, and website content and design, Copyright © 2001-2025 Challenging Technologies, LLC.
All digital photo copyrights belong to the photographers and may not be used without permission.
Current Server Time: 08/28/2025 10:50:13 AM EDT.
