Use a photo using camera or media.PhotoLibrary

I am using the latest build, try to load a photo with a sample code in simulator. I am able to take picture, use it and save it. But when I display the saved photo in next screen, I only see 1/4 of the saved picture, can not see the whole picure! regardless I use media.Camera (new picture)or media.PhotoLibrary (existing picture). I don’t use crop, scale, or other manipulation before I display. Does anyone have such problem before?
local function sessionComplete ( event )
t = event.target
local photot = display.newGroup()
photot:insert(t)
local baseDir = system.DocumentsDirectory
–Save photo.jpg
display.save(photot, “photo.jpg”, baseDir)
end

local function newphoto ( event )
if (event.phase == “release”) then
media.show( media.Camera, sessionComplete )
– or use media.PhotoLibrary

return true
end
end
–Retrieve the saved photo.jpg

local baseDir = system.DocumentsDirectory
local img = display.newImage(“photo.jpg”,baseDir)
thanks! [import]uid: 150242 topic_id: 28806 reply_id: 328806[/import]