Why converting to TIFF first?

[johnny5d]

Hi all!

As After Effects accept DNG files from RAW2DNG , I like to know what is the bennefits of converting DNG to TIFF first?
Sorry for asking but I can't find the answer on the forum.


Result:

Kind regards,

Johnny

[mimbik]

There is no benefit. It is just a different file format but from my experience:

In production widely used formats (10,12,16 bit) are:
dpx
exr
cdng
Prores, but it is a single file and only on OSX
and of course native RAWs.

TIFF format produces very large file. With lots of frames it can be too slow, and in general there are different versions of TIFFs. Some software can have difficulties reading them.

[dmilligan]

Actually, there is benefit, and very big difference, TIFF files have already been debayered (they're not RAW sensor data anymore), and had other "raw development" things applied to them (probably) like CA removed, WB, highlight recovery, etc. ACR can be VERY slow, and in general debayering and applying some of these other things is a slow process (ACR is just extra slow, but that it b/c it's really high quality). You will find that at least in AE (which uses ACR), TIFF will be much faster than DNG (b/c ACR doesn't have to run).

You can also compress TIFF, so files need not be huge.

[mimbik]

Yeah, my mistake. Of course converting DNG is important but I wanted to show that it is not better to use Tiff over other formats, because tiff was not invented for sequence files. Of course someone can disagree.

[chmee]

no picture-format was invented for picture-sequences. but its do-able. for example. DVS Pronto rack-videoplayer (used by myself often on exhibitions and tv-shows) are optimized for tiff-sequences, whereas jpg-sequences are not realtime playable on this machine.

regards chmee