left side of the images are getting trimed how to make images fit

used below code to batch import images into new slides
images appear to be trimmed on left side, is there a way to make them fit without loosing any part of the image

p.s. i am using this code on a slidemaster with a title and picture

Sub insertPics()


Dim strFolder As String ' Full path to folder
Dim strName As String
Dim oPres As Presentation
Dim osld As Slide
Dim ocust As CustomLayout
Dim x As Long
' Edit this:
strFolder = "W:\Personal Folders\Saicharan Sirangi\AA scrpits\Email attachments" 'note the last \


Set oPres = ActivePresentation
Set osld = oPres.Slides(oPres.Slides.Count)
Set ocust = osld.CustomLayout


strName = Dir$(strFolder & "*.PNG")
While strName <> ""
With osld.Shapes.AddPicture(strFolder & strName, msoFalse, msoTrue, -1, -1, -1, -1)
.Line.Visible = True
.Line.ForeColor.RGB = vbWhite
End With
osld.Shapes.Title.TextFrame.TextRange = strName
strName = Dir()
If strName <> "" Then
Set osld = oPres.Slides.AddSlide(oPres.Slides.Count + 1, ocust)
ActiveWindow.View.GotoSlide osld.SlideIndex
End If
Wend


End Sub

If you are using a Picture Placeholder they will always crop if the aspect ratio of the image is not the same as that of the placeholder. Mabe adjust the size on the master to get the correct aspect ratio.