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photoalien66
newbie


Reged: 29/03/2008
Posts: 23
Problem with png files and resizing-can anyone help?
      #648784 - 28/04/2008 15:39

I have always resized and saved my files in jpeg using CS2 after RAW conversion in Lightroom.Recently i have realised the benefit of saving as a Png file as the quality seems so much better.
I resize my pictures the same way i used to resize for jpeg,yet i now can not upload them to the web,even when the site i upload them to does allow for png images.
So is there something i have to do differently to resize a png?
Please help


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El Sid
Going potty


Reged: 14/04/2003
Posts: 9464
Loc: Sussex-by-the-Sea
Re: Problem with png files and resizing-can anyone help? [Re: photoalien66]
      #648799 - 28/04/2008 15:59

Do you actually mean PNG or should that read PSD? As far as I am aware PNG is a special format with a reduced colour palette for use with internet websites, to the best of my knowledge it's unlikely to produce a better quality file than JPEG...

If you actually mean PSD then this is a proprietary Adobe format for the PhotoShop family of products and as such is not recognised by web applications...

--------------------
Nigel

Completely BSRIPN

ElSid Gallery

A camera in the hand is better than one in the cupboard........


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photoalien66
newbie


Reged: 29/03/2008
Posts: 23
Re: Problem with png files and resizing-can anyone help? [Re: El Sid]
      #648808 - 28/04/2008 16:06

Yeah,i do mean png.
I had heard people say that saving images in png keeps the quality and it does seem to be true with the files when compared on my computer-but i'm no expert in these things.
It might be easier for me to stick with jpeg anyway-i just thought i'd ask
Thanks for your help.


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El Sid
Going potty


Reged: 14/04/2003
Posts: 9464
Loc: Sussex-by-the-Sea
Re: Problem with png files and resizing-can anyone help? [Re: photoalien66]
      #648860 - 28/04/2008 16:59

Looks like I was confusing PNG too closely with GIF... Look here for more info on PNG.....

--------------------
Nigel

Completely BSRIPN

ElSid Gallery

A camera in the hand is better than one in the cupboard........


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photoalien66
newbie


Reged: 29/03/2008
Posts: 23
Re: Problem with png files and resizing-can anyone help? [Re: El Sid]
      #648865 - 28/04/2008 17:05

No-i think you are right.
I've had a look into it and tried to see what the problem could be.
My jpegs seemed flat and desaturated compared to the Png files and i think this has more to do with my colour settings.
Thanks for your advise!:)


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El Sid
Going potty


Reged: 14/04/2003
Posts: 9464
Loc: Sussex-by-the-Sea
Re: Problem with png files and resizing-can anyone help? [Re: photoalien66]
      #648869 - 28/04/2008 17:11

Do you work in AdobeRGB colour-space in CS2/Lightroom? If so images left in this colour space do tend to look dull and lifeless on the net. I had exactly this problem until I was advised to convert them to sRGB before putting them on the web. Go to Image>Mode>Convert to Profile... in CS2 and change to sRGB (actually sRGB:1961 IIRC - I'm not at home). I use black point compensation plus Perceptual as the rendering intent and this seems to do the best job on my images.

--------------------
Nigel

Completely BSRIPN

ElSid Gallery

A camera in the hand is better than one in the cupboard........


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photoalien66
newbie


Reged: 29/03/2008
Posts: 23
Re: Problem with png files and resizing-can anyone help? [Re: El Sid]
      #648874 - 28/04/2008 17:19

Yes-i think this is the problem-i have been working in Adobe RGB.
I went to image>mode> but could not find convert to profile.
I did change it in colour settings though-will this work?
Also does it need to be chnaged in Lightroom aswell?
Thanks for all your help-it is much needed


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FenModerator
BAD WOLF


Reged: 12/03/2002
Posts: 20926
Loc: Currently Unknown!
Re: Problem with png files and resizing-can anyone help? [Re: El Sid]
      #648879 - 28/04/2008 17:25

A handy little tutorial is - HERE

--------------------
Fen .......... My Galleries - My Blog - My Flickr


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photoalien66
newbie


Reged: 29/03/2008
Posts: 23
Re: Problem with png files and resizing-can anyone help? [Re: Fen]
      #648888 - 28/04/2008 17:29

Perfect!
Thanks so much-this has been really useful.


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FenModerator
BAD WOLF


Reged: 12/03/2002
Posts: 20926
Loc: Currently Unknown!
Re: Problem with png files and resizing-can anyone help? [Re: photoalien66]
      #648891 - 28/04/2008 17:36

Quote:

Perfect!
Thanks so much-this has been really useful.





Wrote it ages ago. Comes in handy sometimes though

--------------------
Fen .......... My Galleries - My Blog - My Flickr


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