Tiffs won't import?

**covoxer** · 02 September 2009, 04:39 PM

Originally Posted by gwpriester

A JPEG with no compression makes the smallest file size and because there is no compression, you should not have lost any of the image quality.

Gary, you can't even imagine how wrong you are...

There is no such thing as JPEG without lossy compression. Any JPEG, with any quality set including 100% has a compression, and it is never lossles. You do lose some image quality with it.

**steve.ledger** · 02 September 2009, 08:30 PM

I think Gary means 100% IQ (Image Quality). Everyone knows that JPG is lossless at any IQ. It's not productive to tell people they 'can't imagine how wrong they are'.

**gwpriester** · 02 September 2009, 09:06 PM

John - Thank you for your frank response.

I think the bigger difference is JPEG is OK if you plan to use the exported image with no additional editing including resizing. The information that is lost is pixels that are not visible. If you try to edit the image such as resizing the image, the lost pixels are not there so the results are not acceptable.

This is why I said TIFF is better if the image might be edited at a later date.

**covoxer** · 03 September 2009, 05:31 AM

Originally Posted by gwpriester

John - Thank you for your frank response.

Sorry for being rude. That was definitely not in my intentions.

I was kind of kidding. I know that you know well how JPEG compression works, but saying what you have said may be misleading for not experienced readers who may assume that 100% quality JPEG is lossless indeed which would be a tragic mistake. I hope this conversation will prevent such an undesirable consequence.

**covoxer** · 03 September 2009, 05:25 AM

Originally Posted by sledger

Everyone knows that JPG is lossless at any IQ.

No Steve, you just can't imagine how wrong you are... In reality everyone knows that JPG is lossy at any quality setting.

It's not productive to tell people they 'can't imagine how wrong they are'.

Yes agree. Not productive at all. Have to shrink my messages back to pure "yes"/"no" options. Sorry for talking too much.

**steve.ledger** · 03 September 2009, 09:28 AM

Originally Posted by covoxer

No Steve, you just can't imagine how wrong you are... In reality everyone knows that JPG is lossy at any quality setting.

Yes agree. Not productive at all. Have to shrink my messages back to pure "yes"/"no" options. Sorry for talking too much.

Got your attention didn't I

**covoxer** · 03 September 2009, 11:36 AM

Originally Posted by sledger

Got your attention didn't I

Yes.......

**behzad** · 05 September 2009, 07:41 PM

BMP is a great option. Tif is meant for containing CMYK information.

**Soquili** · 05 September 2009, 08:45 PM

Hi Behzad, you may be interested in the history of the TIFF specification. Originally it was simple black and white, no colour.
http://en.wikipedia.org/wiki/Tagged_Image_File_Format