Lightroom: Support cataloging PSB files (files larger than 2 GB PSDs and 4 GB TIFFs)

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Lightroom should catalog psb files, just as it does psd files. I have many psb files that are not over the 65,000 pixels per side or 512 megapixel limits, but are larger than the 4GB limit on psd files, and it would be nice to see them in Lightroom.
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Alan Harper

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Posted 8 years ago

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seanhoyt-dot-art

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This reply was created from a merged topic originally titled Raise the roof - Let me work on PSD that are > 2GB. Also let me open PSB in LR. T....

Surely the 2GB limit is an older hardware limit? I was working with a large PSD in PS and I pasted in a small item to overlay and it doubled the size of the PSD. What's going on there? PSD is not keeping track of layer data and then using instructions to recombine? I can save it all in PSB but >> then I can't work it in the raw converter nor Lightroom which has vastly superior image adjustment options. I want to know when PS and LR will be useful again for me. My company builds and prints very large panoramic prints. 

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John R. Ellis, Champion

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"Let me work on PSD that are > 2GB"

The PSD file format inherently limits the maximum file size to 2 GB, because it uses 32-bit integers to represent offsets within the file (2^31 ~ 2.15 GB). The only way to increase that limit is to use larger integers in the file format, which is precisely the PSB file format.  Thus, to handle Photoshop files larger than 4 GB, LR needs to be able to read PSBs, which is a very modest amount of engineering.

For files of size between 2 GB and 4 GB, saving in TIFF format works well, and LR can read and edit those TIFFs. But obivously, it would be better if you could just use PSB format in all Adobe programs and not worry about file sizes.
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John R. Ellis, Champion

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"I pasted in a small item to overlay and it doubled the size of the PSD. What's going on there? PSD is not keeping track of layer data and then using instructions to recombine?"

This is best posted as a separate topic in the Photoshop category. When multiple feature requests are combined in one topic, Adobe and other users tend to miss them.
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Ramona Boston

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And to add another take to this, I've been scanning hi-res images and three or four images into this the maximum for tif becomes 2.4? Not even near 4 gb. So I wind up here with asking for Adobe products to support Adobe file formats.
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David Annis

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Can Adobe create a new version of the psb format that contains a preview so that LR does not have to build it on the fly, allowing them to overcome the issues with displaying them in LR catalogues even if they still needed to be edited in Photoshop?
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John R. Ellis, Champion

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The PSB format is identical to the PSD format, except that it allows for larger file sizes. Both formats already contain such a preview, the so-called "compatibility layer", which is a composite of all the visible layers. LR uses the compatibility layer to build the catalog previews of PSDs.  The engineering effort to do the same for PSBs is minimal -- see here for more details: 
https://feedback.photoshop.com/photoshop_family/topics/lightroom_support_cataloging_psb_files?topic-...
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Ad Astra

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The original request was 8 years ago to ask Adobe to support their own format in Lightroom. Like many other photographers I run into the size limit often when using a high megapixel camera and doing focus stacking, exposure blending in Photoshop.

ON1 has no problems working with PSB files and I am having to consider switching products.

I wish Adobe would make it a priority, add this request to the just do it list and release support for PSB with the next update.
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Paul Weinrauch

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The truth is, we threaten we are going to switch, but not enough people actually do it.
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Ad Astra

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Just noticed I had replied to this thread but not voted as my original post had been merged with this thread. Wonder if there are others who haven't voted too?

If this thread had more votes maybe Adobe would increase the priority of implementing it?
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John R. Ellis, Champion

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More votes always help to get Adobe's attention (of course, votes are just one factor among many in Adobe's decision-making). But note that this request, with 155 votes, is already very popular, the 13th most popular unimplemented feature request. 
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Amit Zinman

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Where is that list? :)
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John R. Ellis, Champion

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1. In the search box for this forum, search for "lightroom".

2. In the search results page, click on Advanced Search.

3. In the search box, delete "lightroom" and set these exact settings:



4. Click Search.
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Paul Weinrauch

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I have tried posting this thread to other Lightroom forums and tweeting the link as well. We should all trying get this thread in front of as many people as possible.
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danorstmint

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if only Russian trolls used PSB this issue would be the #1 issue and be fixed by now
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danorstmint

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8 years?!? Come on Adobe, support your files already..... please 
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seanhoyt-dot-art

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If it helps, as a stopgap, I have been using a "link' method to edit the PSB file in LR by creating a single-layer TIFF with linked PSB. Any changes to PSB get passed to the TIFF. There's a youtube video on the process. 
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Roland

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Thanks for having started this thread. -  But isn't it instead of "should" much more a complaint "Why does Lightroom Classic (I never work with the other one) not catalog PSB files?" - Incompatible within their own environment... It's completely incomprehensible to me. - Honi soit qui mal y pense...