Export uncompressed TIFF files

[Generic Patriot]

This is a very basic request that should in theory be very easy to implement, but I would like the ability to export a completely uncompressed tiff file from Affinity Photo.  I am aware that the data compression used in tiff files in Photo mathematically lossless, however, there are scenarios in which even this lossless reduction in redundancy can be undesirable, in cpu processing demands of doing this compression for when the file is intermediary or storage constraints are neglidgeable, preserving backwards compatibility with very old programs, or in my specific case, using images as a source for wavetable synthesis, or general image data sonification effects.  

Yes, there are workarounds, like file converter utilities, but giving user control on whether or not lossless tiff compression is used would be so much simpler, something I've encountered in pretty much all raw / raster image editors I've used.

[dominik]

On 7/10/2018 at 6:54 AM, Generic Patriot said:

or general image data sonification effects. 

May I ask to what you are referring to or what you are using? I, myself, do work in the 'sound department' and always like to explore fields of algorythmic music and sound.

d.

[Michael Naylor]

Not having the option to export uncompressed TIFs is the main reason preventing me from using Photo and Designer since buying these when launched.  This is not rocket science, so please implement this a.s.a.p..

[walt.farrell]

15 minutes ago, Mike Naylor said:

Not having the option to export uncompressed TIFs is the main reason preventing me from using Photo and Designer since buying these when launched.  This is not rocket science, so please implement this a.s.a.p..

I'm curious why uncompressed is so important to you for TIF files. Do you have some program that can't work with them when they're compressed?

[Michael Naylor]

1 minute ago, walt.farrell said:

I'm curious why uncompressed is so important to you for TIF files. Do you have some program that can't work with them when they're compressed?

I first encountered this problem when I tried to migrate to an earlier version of Capture One (I don't know if Phase One have fixed this now).  At that time I had to convert thousands of TIFs from LZW to Uncompressed just to test out Capture One.  Another problem with LZW is that it isn't fully supported for 16bit files. I.E., LZW should only be used on 8bit files.  Lastly, LZW doesn't really offer any advantage, as uncompressed files are often smaller (unbelievable, but true).