diff --git a/rest_framework/fields.py b/rest_framework/fields.py
index c0253f86b..a885eaf4e 100644
--- a/rest_framework/fields.py
+++ b/rest_framework/fields.py
@@ -1006,7 +1006,8 @@ class ImageField(FileField):
         if hasattr(data, 'temporary_file_path'):
             file = data.temporary_file_path()
         else:
-            if hasattr(data, 'read'):
+            if hasattr(data, 'read') and hasattr(data, 'seek'):
+                data.seek(0)
                 file = BytesIO(data.read())
             else:
                 file = BytesIO(data['content'])