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Thread ID: 47899	2004-08-08 10:57:00	Irfanview - photos appearing grainy	caffy (2665)	Press F1

Post ID	Timestamp	Content	User
259639	2004-08-12 06:56:00	how are you scanning??? if from a flatbed scanner or a film scanner then use the TWAIN support from the file menu of photoshop. this would bring up the scanner's software auto and scan then when you finished with it, it would import that straight into Photoshop or Irfanview. I suggest PS if you have it. Then go to image size and adjust. then save as TIF file. Jpg only allows 72 dpi. pay attention to the resol and other setting in your scanning software too.	nomad (3693)
259640	2004-08-12 06:58:00	if its a digital file. then you can go to image size like my first post and adjust the settings to up the resol and PS would drop the physical size for you. if that size is too small for your liking... then you may need to inerpolate it by 10% steps repeatedly. the dequality is there but less than if you went for one big step jump than many little steps..	nomad (3693)
259641	2004-08-12 07:01:00	last thing, if you are using the jpg even just don't save it again as a jpg file as it would be compressed again ... instead save the jpg file to tiff to retain quality. while you in PS you may want to use Adobe RGB color space, basically a greater palette while you are editing ... thou sRGB does have a quicker out of the box solution but less ideal with ediitng .. try to start again from the original file or photo.	nomad (3693)
259642	2004-08-12 07:24:00	> Before, if I made a photo smaller, from 1mb down to > about 200kb, the picture quality remained the same . OK > However, after saving a recent photo in GIF format, > and making the DPI small, all photos I've made > smaller, AFTER that, have lost their quality, and > appear grainy etc . what dpi is this?? if you are using less than 72dpi you may see grain as the monitor registers at 72 dpi > How do I change it back to the way it was - keeping > the photo's quality when making photos smaller . > Saving it in JPEG format does not make any > difference, they still stay grainy . i dont trust irfanview a lot . read my post and use the original photo or file . > I know this problem is only with Irfanview, because I > checked in Photoshop, and the quality stayed the same > when resizing . in photoshop maybe you were viewing at 100% or less? the defaulat setting is often around 20% . maybe with irfanview you were seeing 150% or fit page or so ?? tell ya what just use ps . email pple tend to use a 100KB photo per . try to set as 72dpi and resize or try 100 dpi some folks like that instead . you mentioned GIF . i have v little exp with gifs . but arn't these reserved for lesser reso and fewer colors paletter than jpg?	nomad (3693)
259643	2004-08-12 07:38:00	you've solved it? oh. i missed all of that! :p	nomad (3693)
259644	2004-08-12 07:39:00	> if its a digital file. then you can go to image size > like my first post and adjust the settings to up the > resol and PS would drop the physical size for you. HELP. I'm having much trouble accepting the advice offered here, especially as Caffy says the problem is solved. "if it's a digital file"... well what else was Caffy asking about? "Up the resolution & drop the physical size" ? AFAIK Higher resolution increases the image physical size. I suspect there is confusion here with DPI being considered a resolution. It is not, and only applies to printing or scanning where inch sizes of a document are involved. HELP, are there any digital image experts here that can offer correct information about this topic ? Thanks..	Bazza (407)
259645	2004-08-12 13:06:00	heh, yes the problem is solved...thanks tho, nomad, for your input. Certainly interesting... I'm just trying to see if I can avoid this problem happening again in the future, by finding out what exactly went wrong in the first place. I was viewing the photos at 100% (I made sure of this - originally i thought I was viewing it bigger, like 150% but it was in fact 100% and grainy).... The reason I saved one photo in GIF format was because it had to be smaller than a particular size (7168b to be exact - for Trillian buddy icons), GIF format was the only way that solved this problem.	caffy (2665)
259646	2004-08-12 13:59:00	>Then go to image size and adjust. then save as TIF file. Jpg only allows 72 dpi. Curiosity has gotten the better of me, are you saying that a jpeg can only have a dpi of 72? Maybe I’ve missed something but every jpeg I’ve ever played with could have that altered, my camera takes photo's in jpg format at 230dpi,i then just saved a pic multiple times with different dpi's and levels of compression ,and they all excepted the settings I assigned.	metla (154)
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