John_F Loc: Minneapolis, MN

A friend sent me an image made from two smartphone pictures that were merged in Photoshop and saved and sent as a Photoshop file (psd) with two layers. By email. My iPad Air 2 recognized and displayed psd picture. As did my MacBookPro and the file opened in PS CS3 as a true two layer image. I was able to manipulate both layers, as per usual.
My iPad has more capability than I thought and our email servers are more lenient than I would have thought.

This leads to a question. Do others have examples of the versatility of our devices.

tradio Loc: Oxford, Ohio

That's very interesting.

lamiaceae Loc: San Luis Obispo County, CA

Wow, Ps CS3 !???

To the question, no. My ISP limits attachment sizes to 20MB. Many of my Ps CS6 psd and TIF files are well over 100MB. Even my JPGs can be huge. Actually that does seem odd that an O/S could recognize a propitiatory Adobe file format psd, psb, etc. I found a Windows Codex for Windows 10 for Raw files like DNG, PEF, NEF, CR2. And I would guess Mac can be the same.

Dngallagher Loc: Wilmington De.

A PEECEE requires a codec to convert images from raw, a Mac has a built in raw converter engine, Apple Raw, which is updated by Apple when new versions come out for new cameras. Apple raw is built into OS X & IOS for all their devices.

https://support.apple.com/en-us/HT207049

ISP - Yes, Email size limitations are based on the SMTP server in use settings, generally limited to between 20 & 24 MB maximum - if your attachments go beyond the limit of your smtp server then the smtp server will simply refuse to send the email, generating an error message to the sender.

For larger files to be transferred, if you cannot control the smtp attachment limit, than something like Dropbox can hold the file temporarily and you only send a small email with a link to the big file for download.

Dngallagher Loc: Wilmington De.

Before thinking that the email servers were more lenient - what was the file size of the psd? It may have fit the limits fine, or just barely and got thru. Normally 20 MB is the limitation for smtp transfer, but each message seems to have a slight variance in the limitation, so sometimes a message slightly larger seems to squeak thru.

I would think, images coming from a smartphone are not very large to begin with - typically JPG, and not super high resolution, so even when merged into a single image in Photoshop - it all depends on the size of the image being sent.

Gene51 Loc: Yonkers, NY, now in LSD (LowerSlowerDelaware)

Actually, a codec is only used to display raw captures by accessing the embedded jpg file. Microsoft, like Apple, provides a codec that will access the jpg from large numbers of camera raw formats.

https://www.microsoft.com/en-us/download/details.aspx?id=26829

All computers require a codec, pc or otherwise. The difference is that in Mac and IOS, you have to download and install a new version of the OS, whereas in MS you can simply update the codec pack - either using the MS bundle, or the individual codec from the camera manufacturer - all of which are 100% free. Apple raw is the equivalent of Microsoft's Codec pack.

Dngallagher Loc: Wilmington De.

Actually, you can download and install the Digital Camera Raw updates from Apple for OS X just like a codec Gene, although on an IOS device you may be correct about DCR being bundled only with IOS version upgrades.

DCR download example:

https://support.apple.com/kb/DL1889?viewlocale=en_US&locale=en_US

Personally, I think that Apple's DCR is not as good as Adobe's ACR for raw conversion - more adjustments and tweaks seemed needed to raws from DCR vs ACR, but we all know about opinions ;)

Hbuk66 Loc: Oswego, NY

I did my first raw editing in luminar last night, very happy with the results... just my opinion and I am not a professional...