User Tag List

Thanks useful information Thanks useful information:  0
Results 1 to 9 of 9

Thread: Megapixel size = What size print

  1. #1
    Member
    Join Date
    22 Sep 2010
    Location
    Newcastle
    Posts
    112
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Megapixel size = What size print

    Hi all

    Hope i have posted this in the correct section if not could a mod or admin please move to the correct section.

    What i want to know is does the megapixel size refer to how big of a photo you can print without it going blurry or pixelate

    And does anyone have a chart to what size or know where to find a guide to help make a decision on what size i want to print.

    And last question can anyone recommend a good place that turns your photos into good quality prints, at a large size.

    Thanks

  2. #2
    Member
    Join Date
    10 Jul 2010
    Location
    Gold Coast
    Posts
    6,346
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I have Canvas prints done from my 8.2 MP 30D @24inches x 16inches tack sharp and look excellent
    Canon : 30D, and sometimes the 5D mkIII , Sigma 10-20, 50mm 1.8, Canon 24-105 f4 L , On loan Sigma 120-400 DG and Canon 17 - 40 f4 L , Cokin Filters




  3. #3
    Member
    Join Date
    08 May 2009
    Location
    Buninyong
    Posts
    1,235
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I'm certainly no expert but the way I understand it this is where dpi comes into it. You can print the same image at 300dpi and again at 72dpi and get vastly different sizes.

    It depends a lot on what sort of distance an image will be viewed from, think billboard and you might be able to have 1 dpi and viewed from 100m it might look fine. On the other hand the same image might need to be printed at 600dpi on a postage stamp to get the detail required.

    This link might help clear it up too...

    http://www.rideau-info.com/photos/mythdpi.html

    I'm not aware there is any hard and fast rule on this but here are a couple of sites that have a basic guide that might be useful.

    http://www.microscope-microscope.org...resolution.htm
    http://www.digicamguides.com/print/ppi-print-size.html
    Mic

    Photography is the art of telling stories with light.

    www.michaelgoulding.com

  4. #4
    Ausphotography Site Sponsor/Advertiser OzzieTraveller's Avatar
    Join Date
    12 Oct 2009
    Location
    Forster- Tuncurry, eastern Australia
    Posts
    1,600
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    G'day Kyle

    Pixels & publishing & printing all go hand-in-hand, but for many of us (in the beginning) it can become a bit of a maths-nightmare

    Your camera shoots in pixels ... for this example I'll say it shoots 3000 x 2000 pixels, making 6,000,000 pixels or 6mpx overall
    Magazines print at 300DPI and most domestic colour printers print at about 200DPI - tho they can print a lot finer if you ask for it

    If you submitted to a magazine publisher, where the mag was printed "at 300DPI", then the printer would say "3000 pixels divided by 300DPI = 10inches" ... ie- it could do a single page easily
    If you home-print at 200DPI, then 3000 / 200DPI = 15 inches

    However, if you send this image to a commercial printer and, say, ask for a 20inch print, the machine will 'stretch' and realign the pixels to fit the 20inch paper - the result being that you would see it as 'okay' to 'maybe a bit soft' ... but hang it on the wall and view it at a reasonable distance, and it will look okay for sharpness. If you ever get the opportunity to view a roadside hoarding up close, the pixels are 'horrific' - but from the road, it looks quite okay

    Hope this helps a bit
    Regards, Phil
    Of all the stuff in a busy photographers kitbag, the ability to see photographically is the most important
    google me at Travelling School of Photography
    images.: flickr.com/photos/ozzie_traveller/sets/

  5. #5
    Member
    Join Date
    12 Feb 2008
    Location
    Brisbane
    Posts
    7,831
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    how "big" is your file in mp ? and how big do you want to print ?
    Darren
    Gear : Nikon Goodness
    Website : http://www.peakactionimages.com
    Please support Precious Hearts
    Constructive Critique of my images always appreciated

  6. #6
    Ausphotography Veteran rwg717's Avatar
    Join Date
    29 Jun 2009
    Location
    Southern NSW
    Posts
    3,569
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Just as a quick guide, Scott Kelby quotes the following print sizes in his book "Digital Photography" as rule of thumb:
    3 mpx = 5"X7"
    4 mpx = 8"X10"
    5 mpx = 11"X14"
    6 mpx = 13"X19"
    8 mpx = 16"X20"
    12 mpx = 24"X36"
    As mentioned in previous posts, quality can vary substantially between printers
    Richard
    I've been wrong before!! Happy to have constructive criticism though.Gear used Canon 50D, 7D & 5DMkII plus expensive things hanging off their fronts and of course a "nifty fifty".

  7. #7
    Member
    Join Date
    26 Jul 2010
    Location
    South
    Posts
    254
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    IMO you can throw the idea of megapixels out the window. Pixels are nothing without a sharp lens, spot on focus etc. Also, the thing with larger prints is that you'll often be viewing them from a greater distance, so you can stretch the boundaries. It's not like billboards are taken with 10 billion pixel cameras (although a medium format would help ;p)
    So yeah, as Richard mentioned above, that's a good rough guide, but don't consider it a hard and fast rule. I've seen plenty of files from 21 megapixel cameras that aren't worthy of anything over 12x18in
    Canon stuff 5Dmk1 w/ 24-70 f2.8L, Canon 5Dmk1 w/70-200f2.8L, 100mm f2.8 macro, 50mm f1.4, 580exII
    Alienbees B800, Lumopro 160, Manfrotto 155XPROB w/ 498RC2, Lowepro ProRunner X450AW
    Phew!

  8. #8
    Member
    Threadstarter

    Join Date
    22 Sep 2010
    Location
    Newcastle
    Posts
    112
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Thanks for all the replies, It now gives me an understanding on how it works and what to look for. I currently have the fujifilm which shoots about 12mp from memory, it has taken some good photos, and want to do a couple of large prints to hang on the wall of family shots and my little girl, but also whe i get my new camera when i finally decide in what to get i want to do some landscapes and hav printed and hangin on the wall.

    The other thing is, i need to understand inches better and releated it to a size in mm or cm, I know how to work it out just have to do a few calculations to understand the sizes that have been posted up in this thread.

    Thanks

  9. #9
    Member
    Join Date
    26 Jul 2010
    Location
    South
    Posts
    254
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Sorry about the inch thing, it's the standard in the photo industry so I use it all the time as I work in lab Luckily my parents hammered it into me as a kid, cos my generation as a whole have no exposure to it (i'm only 21).
    So with your fuji compact especially, 12mp doesn't mean much. You can understand what I mean yeah? Your 12 megapixel fuji is not capable of taking as clean shots as say my 12mp canon 5D full frame dSLR with a $1800 lens - even both under ideal circumstances?
    Best thing to do is blow them up on the computer screen and try to estimate each shot on how big it will go, or take your files to a good pro printing lab and they should be able to tell you some maximum print sizes

    Quote Originally Posted by Kyle72 View Post
    Thanks for all the replies, It now gives me an understanding on how it works and what to look for. I currently have the fujifilm which shoots about 12mp from memory, it has taken some good photos, and want to do a couple of large prints to hang on the wall of family shots and my little girl, but also whe i get my new camera when i finally decide in what to get i want to do some landscapes and hav printed and hangin on the wall.

    The other thing is, i need to understand inches better and releated it to a size in mm or cm, I know how to work it out just have to do a few calculations to understand the sizes that have been posted up in this thread.

    Thanks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •