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October 2004
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2004.10.04 08:53 "Re: BigTIFF extension issue", by Andy Cave
> A laser printer which was Level 1 can print a "Level 2" file as long as > the "Level 2" file is constrained to using Level 1 features. Hi Bob. An interesting point that one. If a .ps file contains only Level1 features, then surely one would say it's a Level1 PS file - not a Level 2 file. Another interesting case - think of PDF - a PDF 1.4 file that only contains 1.3 code will more often than not NOT print on a RIP that works with PDF 1.3. That's because some RIPs check the version number and then error when they see 1.4 - even though all the 'commands' are 1.3. To make it work, you have to put in a version number of 1.3. [Anyway, this is to a degree a mute point 'cause I rather abused the definition of backwards compatible.] The simple argument I think is that all/most users will (probably) think of such a file as a TIFF file and that .tiff/.tif is what denotes a TIFF file. I'm sure discussions could go on for lots of emails... I think the top 'N' people or so involved with LIBTIFF should make a decision. Once it's made, us programmers will get on and implement what ever is required!! Andy. PS I'm a programmer as well as running my own company. Andy Cave, Chief Executive Officer, Hamillroad Software Limited. www.hamillroad.com