Using the Camera to Take JPEG Exif photos

[btaylor]

I've been experimenting with taking the highest resolution photos I can with an N95. So I've been using the JPEG_Exif mode for the camera. I understand that what I get back is not an Image object, but raw Jpeg data. But what can I do with that? I haven't figured out how to blit it to the screen nor save it. Do I need to convert it using a graphics package method?

[btaylor]

So I found this works, but seems to be inefficient time-wise. I am also unconvinced that the saved jpegs are as high a quality as I would get from using the internal camera. I've done some visual comparisons using the same subject, and the N95 camera seems to do a better job as far as clarity goes.

import appuifw
import camera
import graphics

## code to change orientation to landscape, use the select key
## to take photos, other minor things

def take_picture():

    camera.stop_finder()
    pic = camera.take_photo(mode = "JPEG_Exif", size = (2592, 1944))

    # now save the image	
    try:
        f = open("photo.jpg", "w")
        f.write(pic)
        f.close()

    except:
        print "photo save error"

    # now display the image
    try:

        photo = graphics.Image.open("photo.jpg")

        try:
            w,h = c.size
            c.blit(photo, target=(0, 0, w, 0.75*w), scale=1)

        except:
            print "photo display error"
		
    except:
        print "photo read error"

I know I haven't included the full code, but everything else is pretty standard when using the camera.