quality sharpmess

thebaz

I have this image which looks not very sharp on my web-site or when i put it in blurb book builder .

On my web site its "the Sunday mass" image ;-

http://www.barrydelaney.ie/street/album/index.html

On pix.ie it looks fine ;-

http://pix.ie/thebaz/1087456/in/album/334490

Am i totally going mad , or anyone any idea, I want to use the image in my blurb book, only if sharp, I've even restored image to un-edited version , as it needed little work .

Totally puzzled

Fenster

It is all a matter of compression. I do see some differences between the versions, but I'd just blame it on how the image was generated and compressed:

Your site:


pix.ie:

AnimalRights

Big difference alright.

thebaz

Mark - not sure if you have used blurb (book generating software) - but it seams to generate the image like my website (which uses jalbum) - quality is poor / unuable by blurb , wondering is there away around this ,as all other images are fine using the standard uploading on blurb

Fenster

A photograph is essentially a long string of number and the manipulation of it is achieved through the use of a mathematical formula. There are essentially different formula to perform the same task. Some are proprietary, some are open, and pretty much each and every group online handles their compression in a slightly different way.

thebaz

Fenster wrote: »

A photograph is essentially a long string of number and the manipulation of it is achieved through the use of a mathematical formula. There are essentially different formula to perform the same task. Some are proprietary, some are open, and pretty much each and every group online handles their compression in a slightly different way.

cheers - i ended up importing into blurb from flickr - slightly better, not perfect but usable - curious to why this image is causing such problems . maybe its the pebble stone effect and check suit - i thought the image might have been damaged, but don't think so - just a digital problem i guess

sNarah

When i build my Blurb book I found the only pics that came out properly where the one directly uploaded from the exisiting files from my PC.

All 'online' ones became blurry like yours. Must be a Blurb sorta problem.

Fenster

I essentially say essentially a whole lot, don't I?

@sarah @baz You should upload an use an image for print at the highest possible resolution. When sites like pix.ie create different sized images for later use you need to understand that those are not your original photograph. They took it, copied it, shrunk it and applied a specific process to reduce its footprint on disk.

thebaz

essentially it makes sense now - the original file was 6 mb, when i upload a 1 mb file , the digital distortion is reduced , probably too much info in files over 1 gb - still weird that the other 50 files were ok at original size -

thanks anyway

sNarah

thebaz wrote: »

- still weird that the other 50 files were ok at original size -

thanks anyway

I was thinking that too.

sineadw

What colour space are you using Baz? sRGB will make an image look brighter. You should use Adobe RGB to mimic print.

thebaz

the image has no pp now , so don't think colour space would matter
in ps its sRGB :-)

I reduced image size further and it seams fine now

http://www.barrydelaney.ie/street/album/index.html

just think certain images can't handle too much info where in particular things like pebblestone or check suits - fine detail - well thats my logical theory

sineadw

Colour space matters, whether it's processed or not. you should change to Adobe so it looks more like it will printed. Otherwise you'll get a print back much darker and duller than you anticipated.

thebaz

sineadw wrote: »

Colour space matters, whether it's processed or not. you should change to Adobe so it looks more like it will printed. Otherwise you'll get a print back much darker and duller than you anticipated.

thanks Sinead - switched to Adobe RGB 1998

sheesh

Ah color spaces

I know it was the case that some browsers defaulted to sRGB color space when displaying images in the window this meant that if you images used Adobe RGB it would look Darker online (or was it brighter? anyway they looked different) I would check the blurb Documentation and see if they have some requirement.

DaireQuinlan

Chances are they convert to sRGB before they print anyway. I know photobox and a pile of other print places online do.

thebaz

DaireQuinlan wrote: »

Chances are they convert to sRGB before they print anyway. I know photobox and a pile of other print places online do.

should i set photoshop back to sRGB ?

confused -

don't think the problem is to do with colour space as file was unedited in photoshop - as said problem went when i reduced file size