Results 1 to 8 of 8

Thread: emailing HDR photos

  1. #1
    New Member
    Join Date
    Jul 2009
    Location
    Ann Arbor Michigan, US
    Posts
    3

    emailing HDR photos

    I have some HDR photographs I would like to send as emails or post on a web site.
    But they are too large. What do I have to do to these photos to be able to email them?

  2. #2

    Join Date
    Apr 2009
    Location
    Epsom, uk
    Posts
    186
    Real Name
    Will

    Re: emailing HDR photos

    If you have something like gimp or photoshop, then just open it up and scale down the image, and/or reduce the jpg quality. If you dont have anything installed, you could try an online image editor if its just a one off rather than downloading and installing an app. picnik and pixlr are the first to come up in google. Alternatively even window's paint program should be able to resize the images to get a smaller file size.

  3. #3
    Steaphany's Avatar
    Join Date
    Apr 2009
    Location
    Somewhere in Texas
    Posts
    831
    Real Name
    Steaphany

    Re: emailing HDR photos

    For a web site, You'll probably have to scale them down.

    To email them, try out RapidShare where you can upload up to 200MB and then send the URL for downloading the file in your email. If you are sending multiple files, bundle them up in a ZIP file and as long as your ZIP is under 200 MB, RapidShare will take it.

    RapidShare is free and will hold the files for 90 days or 10 downloads, which ever comes first.

  4. #4
    Moderator Dave Humphries's Avatar
    Join Date
    May 2008
    Location
    Windsor, Berks, UK
    Posts
    16,748
    Real Name
    Dave Humphries :)

    Re: emailing HDR photos

    Hi corona203,

    I don't think that they are HDR is too relevant, so have you seen this tutorial here at CiC?

    https://www.cambridgeincolour.com/tu...ze-for-web.htm

    Cheers,

  5. #5
    Davey's Avatar
    Join Date
    Sep 2008
    Location
    UK
    Posts
    530

    Re: emailing HDR photos

    if it's for sending to someone to tonemap etc themself or some other purpose where the actual HDR file is needed then openexr should give you the compression you are after. As dave said if it's for image viewing or web display then HDR doesn't really enter into it since it's a low dynamic image you will be wanting regardless of whether it was made from HDR source or not.

    Unless you are talking about interactive HDR file viewer like the one based on pfstools

    http://pfstools.sourceforge.net/hdrhtml.html

    which give interactive exposure control but openexr should suit that purpose well too. Other formats similar size to openexr are either technically not as capable or if they are technically better (like 32bit floating point tiff are) they are much much bigger files (too big for most applications in general, especially for photography).

  6. #6

    Join Date
    Dec 2008
    Location
    New Zealand
    Posts
    17,660
    Real Name
    Have a guess :)

    Re: emailing HDR photos

    Quote Originally Posted by corona203 View Post
    I have some HDR photographs I would like to send as emails or post on a web site.
    They might have come from a high dynamic range source, but after processing they're just normal dynamic range like any other photo so - as Dave mentioned - it doesn't enter into the equasion.

    As others have mentioned, you'll need to down-sample the images using a program; usually with the longest dimension somewhere in the 800 to 1000 pixel region. Also, don't forget that the images will need resharpening after downsampling.

  7. #7
    New Member
    Join Date
    Jul 2009
    Location
    Ann Arbor Michigan, US
    Posts
    3

    Re: emailing HDR photos

    I do have photoshop and gimp. Thank you all, its been very helpful.

  8. #8
    Moderator Dave Humphries's Avatar
    Join Date
    May 2008
    Location
    Windsor, Berks, UK
    Posts
    16,748
    Real Name
    Dave Humphries :)

    Re: emailing HDR photos

    We're glad to help

Tags for this Thread

Posting Permissions

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