Would suggest you to do a search for that image in Lightroom.
Here are the steps :
1. Select all Photographs under Catalog Panel in Library module.
2. Click on View menu> check Show Header Bar (if not already checked)
3. Click on text filter and choose any Searchable Field and Contains > type in the name of your image and check if you get the result.
Thank you. I tried that and nothing was located. Do you think I hit the remove from catalog shortcut by accident?
The original had been imported from Aperture, so it was still on my desktop. I re-imported it, which is good, but will now have to begin the processing all over.
How can I avoid doing this in the future?
With this output, it seems that you deleted the image from your catalog.
The only way is to make sure you do not remove any such images.
Ok, thanks Chetna. Why was there no pop up warning?
Also, How do I find the trash... doesn't a deleted file go there?
when you press delete key with an image selected in Lightroom, it shows a prompt that whether you want the image to be deleted from disk or just removed from catalog
Or the shortcut Alt + delete / Option + delete which directly removes without any prompt.
I believe you might have pressed that shortcut by default and that is why you did not receive any prompt
and the removed image does not show up in the trash either.
Now thinking about it I realize I was adjusting using the plus/minus keys with option held down, in order to increase in 1 step increments. Would a slight movement of the finger be allowed to cause such a potentially awful outcome? I'm surprised there was no pop up warning.
Plus/minus keys pressed with the Option would not remove the image unless and until delete key was pressed with Option.
Option+Delete does not show any pop-up. It directly removes the image from catalog and preserves your original on your hard drive.
What I mean is that the plus key is right next to the delete key, it is easy to be using plus/minus to make subtle adjustments with the option key held down---otherwise it goes in five-step increments. So one slip of the finger could result in option+delete happening. Seem like there should be a warning, I can't be the first person to have dome this.
Related question: So far I've been working on images transferred from Aperture, so I can access them on my hard drive. When I import from camera, will the files go into LR, or be kept on my HD, from which they are accessed? I ask this because in Aperture it seemed they went into that library. I'm using a Mac.
You will have to be cautious while doing that because option+delete does not show any prompt (that is by design).
It is just the delete key that shows prompt about delete.
You can request for the change to this in the feature request form : Feature Request/Bug Report Form
To answer the other question:
When you will import from your camera, Lightroom would ask you to copy those images on your hard drive at the time of import itself. Lightroom would refer to those images on your hard drive as it never stores the copy of images. Lightroom always refer to the original images and work on previews.
I did report it. Why would a design feature include allowing photos to be deleted without warning? I don't see any possible advantage. The option "Don't show me this again" is useful when you are in the habit of making the same change over and over, but allowing a slip of the finger to cause a deletion doesn't make any sense to me.
For your other answer :I didn't realize that. So there is no LR trash? If I want to delete the original files, they should be removed from Library, then deleted from the disk, is that correct?
There are two different shortcuts for the same.
Delete shortcut : gives you the prompt
Option+Delete : directly removes and gives no prompt
There is no Lightroom Trash as it works only in previews.
You have Lightroom Catalog Backups which you can take on regular basis.
If you delete/rename/move the original files, then the link of Lightroom with that file would break and Lightroom would show an exclamation mark on that image.
You would not be able to edit that image further and would not be able to export it.
But the catalog backups will be of no value in a case of accidental deletion. Correct? I thought the backups were in the case of a crash.
If I do desire to delere an image, is the proper process to remove from catalog, then delete the original from my hard drive?
Catalog backups would be helpful in case of accidental deletion.
Just a scenario that you are working on an image in Catalog which you closed and took the backup.
Then, you reopen the catalog and start working on the same image and accidentally removed it.
Backed catalog would be helpful here as it would contain that image.
It depends if you want to delete the image permanently from your hard drive or just the Lightroom image.
If you want to permanently delete the image : then, press delete and choose Delete from disk. (this would remove the image from Lightroom as well as from your hard drive)
If you want to just remove the image from Lightroom and not from hard drive : press delete key and choose remove or press option+delete
The whole Lightroom window that you see which consists of folders, collections, your edits is called the catalog and Develop is one of the modules in Lightroom.
Backup is a process of Lightroom and the Backup setting can be accessed under Catalog Settings.
You can change the backup to be created at every time you close Lightroom, or once a week or so on.. (The options are available under Catalog Settings)
You can refer this link to know more about Lightroom backups :
LR has backed up once a week, how do I access that?
Maybe I should have look for backed up catalog first.
Backup folder is at the same place as your main catalog.
By default it is under: Pictures\Lightroom\Backup
But if is set to backup once a week, then it would contain the backup of the last week only if you choose to backup at the time of closing Lightroom (when you got the prompt)
Thanks for the good advice. How would I go about accessing the one photo I deleted and getting it back in the catalog?
I'll make sure to check this forum often, it has been helpful.
If the deleted image exists in your backup catalog, then you can choose to import from that catalog by going to File> Import from Another Catalog
or make that particular backup catalog as your main catalog
It would be advised to study this article to know more about Lightroom backups : https://helpx.adobe.com/lightroom/help/back-catalog.html