Advertisement
If you have a new account but are having problems posting or verifying your account, please email us on hello@boards.ie for help. Thanks :)
Hello all! Please ensure that you are posting a new thread or question in the appropriate forum. The Feedback forum is overwhelmed with questions that are having to be moved elsewhere. If you need help to verify your account contact hello@boards.ie
Hi there,
There is an issue with role permissions that is being worked on at the moment.
If you are having trouble with access or permissions on regional forums please post here to get access: https://www.boards.ie/discussion/2058365403/you-do-not-have-permission-for-that#latest

File types and compression

  • 19-12-2012 3:06am
    #1
    brokenarms
    Registered Users, Registered Users 2 Posts: 1,387 ✭✭✭


    I find after spending time on post processing my hard work seems to be degraded when I convert and post online to flickr or anywhere.

    I notice that the images look as if they have been pushed to far even though when working them in photoshop they look fine.

    I used to convert to jpeg after a resize and then post to flickr.

    I started converting from photoshop to Tiff and seen some improvement but after I resize the image it can tends to break up and subtle gradients are lost.
    I work in adobe rgb . 16bit.

    Is there a perfect way to resize and convert while still keeping 100% of the image quality.


Comments

  • #2
    kelly1
    Registered Users, Registered Users 2 Posts: 5,026 ✭✭✭kelly1


    Hello, are the images ok before you upload them? i.e. Is it only when you upload them that you see image quality loss?


  • #3
    brokenarms
    Registered Users, Registered Users 2 Posts: 1,387 ✭✭✭brokenarms


    kelly1 wrote: »
    Hello, are the images ok before you upload them? i.e. Is it only when you upload them that you see image quality loss?

    Yes . on upload

    Imageshack seems to be really bad.


  • #4
    kelly1
    Registered Users, Registered Users 2 Posts: 5,026 ✭✭✭kelly1


    brokenarms wrote: »
    Yes . on upload

    Imageshack seems to be really bad.
    Surely it's just down to the additional compression that these sites use?


  • #5
    Hugh_C
    Registered Users, Registered Users 2 Posts: 2,852 ✭✭✭Hugh_C


    Working with Adobe RGB in 16 bit is giving you a false sense of what to expect when it gets out into the "real" world.

    For a start, jpegs are 8 bit and therefore you're throwing away half your information when you convert to jpeg, so what you're seeing on your screen has nice full-gamut, 16 bit gradients but after conversion, you're losing a load of information.

    Also, web browsers sometimes ignore colour profiles - and the ones which don't prefer sRGB as I understand it, so you'd be better off working in a more realistic colour space.

    Moral of the story: convert to sRGB and 8 bit before you edit and you'll be less disappointed when it gets out to flickr or wherever.

    Hope this helps.


Advertisement