diff --git a/lib/paperclip/style.rb b/lib/paperclip/style.rb
index 0ef6c7fe6..933bcac23 100644
--- a/lib/paperclip/style.rb
+++ b/lib/paperclip/style.rb
@@ -18,6 +18,8 @@ def initialize name, definition, attachment
         @geometry = definition.delete(:geometry)
         @format = definition.delete(:format)
         @processors = definition.delete(:processors)
+        @convert_options = definition.delete(:convert_options)
+        @source_file_options = definition.delete(:source_file_options)
         @other_args = definition
       else
         @geometry, @format = [definition, nil].flatten[0..1]
@@ -46,11 +48,13 @@ def whiny?
     end
 
     def convert_options
-      attachment.send(:extra_options_for, name)
+      @convert_options.respond_to?(:call) ? @convert_options.call(attachment.instance) : 
+        (@convert_options || attachment.send(:extra_options_for, name))
     end
 
     def source_file_options
-      attachment.send(:extra_source_file_options_for, name)
+      @source_file_options.respond_to?(:call) ? @source_file_options.call(attachment.instance) : 
+        (@source_file_options || attachment.send(:extra_source_file_options_for, name))
     end
 
     # returns the geometry string for this style
diff --git a/test/style_test.rb b/test/style_test.rb
index 89e104dd5..ef3bc6de8 100644
--- a/test/style_test.rb
+++ b/test/style_test.rb
@@ -41,7 +41,9 @@ class StyleTest < Test::Unit::TestCase
                                :styles => {
                                  :foo => lambda{|a| "300x300#"},
                                  :bar => {
-                                   :geometry => lambda{|a| "300x300#"}
+                                   :geometry => lambda{|a| "300x300#"},
+                                   :convert_options => lambda{|a| "-do_stuff"},
+                                   :source_file_options => lambda{|a| "-do_extra_stuff"}
                                  }
                                }
     end
@@ -51,6 +53,8 @@ class StyleTest < Test::Unit::TestCase
       assert_equal "300x300#", @attachment.options.styles[:bar].geometry
       assert_equal [:test], @attachment.options.styles[:foo].processors
       assert_equal [:test], @attachment.options.styles[:bar].processors
+      assert_equal "-do_stuff", @attachment.options.styles[:bar].convert_options
+      assert_equal "-do_extra_stuff", @attachment.options.styles[:bar].source_file_options
     end
   end
 
@@ -177,4 +181,29 @@ class StyleTest < Test::Unit::TestCase
       assert_equal [:test], @attachment.options.styles[:foo].processors
     end
   end
+
+  context "An attachment with :convert_options and :source_file_options in :styles" do
+    setup do
+      @attachment = attachment :path => ":basename.:extension",
+                               :styles => {
+                                 :thumb => "100x100", 
+                                 :large => {:geometry => "400x400",
+                                            :convert_options => "-do_stuff",
+                                            :source_file_options => "-do_extra_stuff"
+                                 }
+                               }
+      @file = StringIO.new("...")
+      @file.stubs(:original_filename).returns("file.jpg")
+    end
+
+    should "have empty options for :thumb style" do
+      assert_equal "", @attachment.options.styles[:thumb].processor_options[:convert_options]
+      assert_equal "", @attachment.options.styles[:thumb].processor_options[:source_file_options]
+    end
+
+    should "have the right options for :large style" do
+      assert_equal "-do_stuff", @attachment.options.styles[:large].processor_options[:convert_options]
+      assert_equal "-do_extra_stuff", @attachment.options.styles[:large].processor_options[:source_file_options]
+    end
+  end
 end