Re: TIFF format (was The Creative Gouge)
Re: TIFF format (was The Creative Gouge)
- Subject: Re: TIFF format (was The Creative Gouge)
- From: Jonathan Taylor <email@hidden>
- Date: Wed, 08 May 2013 16:20:33 -0400
Ben, can you point us (me) to some sites of archival IT best practice
regarding file formats? Any hints or keywords?
I gotta say, although your advocacy for TIFF format (and this discussion)
has been very helpful and informative Andrew (and all) I remain unconvinced
of the merits of layered TIFFs and basic TIFF use in general. Since Adobe
owns TIFF anyway, I'm balancing maybe a 10% file size savings for layered
TIFF against the weight of the overwhelming mass of PSD files out there in
the world. If I switched to layered TIFF I'm switching to something pretty
rare and specialized and universal and open perhaps more in theory than
practice; I mean I bet layered TIFFs are grains of sand on a vast beach
compared to all the PSDs out there. That fact alone makes me strongly favor
PSD.
For flat image file archiving lossless JPEG 2000 does seem like a great
solution. A ZIP-compressed TIFF weighs in at 1.7GB and the lossless JPF
comes in at 1.3 GB-- more than a 20% advantage.
Of course my Oxygen will always scan in TIFF, but since I embed the
original capture in a Smart Object layer in my PSD/PSB, I throw it away as
soon as I have the PSD/PSB saved. In a formal archival setting sure I'd
keep the original TIFF, but for personal practice that is a lot of space
and redundancy. And TIFF will always be with us as a basis for DNG...
...but as a modern file format going forward I just don't see its
relevance-- which I think is what I will continue to tell students in my
various photo/graphics classes.
On Wed, May 8, 2013 at 3:30 PM, John Castronovo <email@hidden>wrote:
> I once encountered a multi-page TIFF file which of course Photoshop won't
> open. I was doubtful at first when my client told me that it had multiple
> pages, but then I read up on it and learned that the format does indeed
> support multiple pages in the same file. I was forced to use a Microsoft
> product to get past the first page. Of course this has little to do with
> the current discussion, but I thought I'd put it out there for comments.
>
>
> -----Original Message----- From: Robin Myers
> Sent: Wednesday, May 08, 2013 12:49 PM
> To: email@hidden.**com <email@hidden>
> Subject: Re: TIFF format (was The Creative Gouge)
>
>
> In case you are not aware of this, Adobe owns the TIFF format. They got it
> when they acquired another company (if I remember correctly, Aldus). The
> latest specification is TIFF 6, available on the Adobe website.
>
> The issue with updating TIFF to use images larger than 4GB is that the
> TIFF tags are a fixed 12 byte format with many of them using an unsigned
> 32-bit value for the image size. It would require some clever work to make
> a newer file format backward compatible yet allow for larger images. There
> is also the issue of all the third party extensions TIFF has received over
> the last two decades and keeping any new TIFF format compatible with them.
>
> Robin Myers
> rmimaging.com
>
>
> On May 8, 2013, at 9:13 AM, Andrew Rodney wrote:
>
> On May 8, 2013, at 10:08 AM, Jonathan Taylor <email@hidden> wrote:
>>
>> Tried to save 4GB 48-bit gray color scan as a layered TIFF and ran into
>>> a 4GB limit, so a PSB file is my only option.
>>>
>>
>> Correct! If you hit that limit, TIFF poop's out so you must use PSB. That
>> begs a new question of Adobe. Could they update TIFF or DNG (which is based
>> on TIFF) to support a larger image?
>>
>> While your point about short term 5-10) turmoil is fair, I still think
>>> it's an excellent bet that PSD will have strong long-term longevity.
>>>
>>
>> It might. But the short history of image file formats doesn't support
>> that. Since PSD buys you nothing over TIFF, why not just use a format
>> that's without question supported in more products that read image data?
>>
>> Andrew Rodney
>> http://www.digitaldog.net/
>>
>
>
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