When I open an image in Photo, I know I get a compressed or thumbnail version; for example, I know I had an image scanned at 25mb's but when I open that image in Photo, the info shows only 7mb's. How do I access the full, 25mb original?
iMac (21.5-inch, Late 2013), Mac OS X (10.1.x), upgraded to El Capitan, OSX 10.11
select the photos and export (file menu ==> export) the unmodified original to the desktop
LN
Thanx for the tip but, that didn't do it! It still only shows as 7mb - as I said, I know this one is 25 mbs; the co-worker who scanned the photo for me opened it with PhotoShop and confirmed that it is a 25 mb file. That original is in somewhere in my computer; perhaps the only means for accessing it is with PhotoShop...any other thoughts?...
GZ
If you exported the unmodified original then that is what you imported - No way to know why you think it should be larger (could be that it is a JPEG and your friend looked at a TIFF - could be many other things) but when you import a photo Photos makes a bit for bit copy and when you export the unmodified original you get exactly that back - "UnModified"
What format is the original photo that you think is 25 MB? What size does it show in the finder prior to importing?
LN
At a guess here:
If this is a Jpeg, it's 7 mb, but when decompressed show a 25 mb photo. It's the same thing, just Photoshop reports the opened size to the confusion of the unwary.
Thanks; you confirmed what a co-worker has told me...I need PhotoShop; Mac's Photo will only open the compressed, 7mb jpeg. However, I also learned that the numbers - eg: 2480x3650 pixels - in the image's info panel will tell me the file size; that is, there's a formula to convert the pixel numbers into megabytes. The pixel numbers for the image in question confirm that it is 23mb. Problem solved, thanks again
The original file was imported into Photo as a 23mb tiff and yes, my co-worker used PhotoShop to open the full, uncompressed image; I'll have to install PhotoShop if I want to see the total number of megabytes for my images. However, I learned that the pixel-count numbers - eg: 2360x3840 - in the image's info panel can, with a formula, also tell me the megabytes. Using those numbers also confirms that the image in question is 23megs. Now that I have a point of reference, I can use that for figuring the megabytes for my other images...problem solved. Thank you very much for you help...
I'm not sure you do.
The file on your computer hard disk is 7mb. That doesn't change at all. When opened the 23 megs is in RAM, never on your HD, and I cannot imagine why you need that information. When opened the Jpeg gives you the full image.
I also learned that the numbers - eg: 2480x3650 pixels - in the image's info panel will tell me the file size; that is, there's a formula to convert the pixel numbers into megabytes.
Are you sure about that because I certainly am not.
The pixel dimensions of an image are the length by breadth. Multiplying them by each other will give you the megapixel size of the image. That has no simple relationship to the megabytes. The assumption behind that is that a:all pickles are the same, and they're not and b: Jpeg compression is constant, and it's not.
So, taking a simple case of two images 6000 x 4000 pixels. That's a 24 megapixel image.
Now, suppose image A is of a blank white wall and image b is of a complex landscape. They will not have the same megabyte size.
Further, Jpeg compression varies according to the app used to create the Jpeg and the settings available on the app. That's wholly unpredictable. You have no idea the Jpeg ratios used on your camera, for instance, So, any one of those images shot on a Canon might have a 5mb file size, shot on a Sony or Nikon it could be 4mb or 6.
But mostly, I think you're wasting your time. When you open Jpeg you see the full image.
How do I find my uncompressed images in Photo?
