Hi @shady ,
Do you want to save images taken by camera in powerapps to local?
Firstly, let me explain why the image is saved as a form of azure blob in powerapps.
Actually, images taken in powerapps is saved as cache in powerapps , not an image file.
If you want to download this , you need to save it as a file firstly.
However, it's not supported to create file in powerapps curently.
You need to call flow in powerapps.
In flow, you could create an image file by using blob data in powerapps.
Could you tell me where do you want to save your image file firstly?
You need to firstly save the image file in one cloud data source, then save it in load.
I assume that it is sharepoint document.
I've made a similar test for your reference:
1)In powerapps:
insert a camera to take images
set this camera's OnSelect:
Set(image,Camera1.Photo)
insert a button to call flow to create image files and save it to sharepoint document:
ClearCollect(pics, { Pic: image, Name: TextInput2.Text& ".jpg"});
//save captured images to a collection
Set(stuff, JSON(pics,JSONFormat.IncludeBinaryData));
//call flow to create image files by using blob data
flowname.Run(stuff)
//please replace with your flow name
insert a button to download capture image to local, set its OnSelect:
Download(Last(sharepoint doc name).'Link to item')
//download this captured image to local please replace with your sharepoint document name
insert a textinput to fill in image file name
insert an Image to display the captured image, set its image:
image

2)in flow
trigger: PowerApps
action:
1/Initialize variable Value: ask in powerapps
2/Parse JSON schema:
{
"type": "array",
"items": {
"type": "object",
"properties": {
"Name": {
"type": "string"
},
"Pic": {
"type": "string"
}
},
"required": [
"Name",
"Pic"
]
}
}
3/Apply to each
create file(sharepoint) File content:
decodeDataUri(item()['Pic'])
Here's my flow in details:

Then you could capture images in the camera, after you click the camera, the captured image will display in Image control.
You could enter file name in the textinput. If you click "save image" button, your captured image will be saved to sharepoint docment, in which solutions it will generate an image file. Then you could click the "download" button to download this image file.
Here's a similar blog, I suggest you refer this about how to create the flow:
http://www.cleverworkarounds.com/2019/06/08/getting-pics-to-sharepoint-from-powerapps-is-getting-easier/
Best regards,