Hi @bluehoodie :
Do you want to patch the SharePoint list with the images?
Firstly ,let me explain why it is difficult to patch images to SharePoint lists.
Since the data source is SharePoint, It is not feasible to update the Picture field with an image file in canvas app.
In addition, you can update Hyperlink field with URI.

I think this link will help you a lot :
SharePoint/Known issues
Secondly,I have an idea here for your reference:
My Date Source:” List A”

1\Add a Add picture control(For testing purposes, I use picture control instead of Camera control)
2\Add a button.
OnSelect:
Collect(
MyPics, /*create a collection to save the pic*/
{
DisplayName: Concatenate(
"image",
Text(
Now(),
"[$-en-US]yyyy-mm-dd-hh-mm-ss"
),
".jpg"
),
Value: UploadedImage1.Image,
AbsoluteUri: "",
Id: "00000000-0000-0000-0000-000000000000"
}
)
3\Add a Gallery
Items: MyPics
4\Add a Form(Form1)
DefaultMode: FormMode.Edit
DataSource :'List A'
Item: LookUp('List A',ID=1) /* Specify records to update */
set the attachments control’s Items property to: MyPics(Important!Refer to the picture attachment for detailed settings)

Visible: false /* Make the entire form invisible (beautiful consideration)*/
4\Add a button
OnSelect:
SubmitForm(Form1);
Patch(
'List A',
LookUp( /* Specify records to update */
'List A',
ID = 1
),
{
column1: First(
LookUp( /* Specify records to update */
'List A',
ID = 1
).Attachments
).AbsoluteUri/*patch the column1 field with the first pic's URI*/,
column2: Last(
FirstN(
LookUp( /* Specify records to update */
'List A',
ID = 1
).Attachments,
2
)
).AbsoluteUri/*patch the column2 field with the second pic's URI*/,
column3: Last(
FirstN(
LookUp( /* Specify records to update */
'List A',
ID = 1
).Attachments,
3
)
).AbsoluteUri/*patch the column3 field with the third pic's URI*/
}
)
I think this link will help you a lot:
https://powerusers.microsoft.com/t5/Building-Power-Apps/Storing-Images-from-a-gallery-into-columns-in-SharePoint-Online/td-p/540122
Best Regards,
Bof