diff --git a/src/ImageProcessor/ImageFactory.cs b/src/ImageProcessor/ImageFactory.cs
index 43b21998a..91d011d7d 100644
--- a/src/ImageProcessor/ImageFactory.cs
+++ b/src/ImageProcessor/ImageFactory.cs
@@ -40,11 +40,6 @@ namespace ImageProcessor
         /// </summary>
         private ImageFormat backupImageFormat;
 
-        /// <summary>
-        /// The original extension.
-        /// </summary>
-        private string originalExtension;
-
         /// <summary>
         /// Whether the image is indexed.
         /// </summary>
@@ -110,6 +105,11 @@ namespace ImageProcessor
         /// Gets the file format of the image. 
         /// </summary>
         public ImageFormat ImageFormat { get; private set; }
+        
+        /// <summary>
+        /// Gets or sets the original extension.
+        /// </summary>
+        internal string OriginalExtension { get; set; }
 
         /// <summary>
         /// Gets or sets the quality of output for jpeg images as a percentile.
@@ -191,7 +191,7 @@ namespace ImageProcessor
                     this.JpegQuality = DefaultJpegQuality;
                     ImageFormat imageFormat = ImageUtils.GetImageFormat(imageName);
                     this.backupImageFormat = imageFormat;
-                    this.originalExtension = Path.GetExtension(this.ImagePath);
+                    this.OriginalExtension = Path.GetExtension(this.ImagePath);
                     this.ImageFormat = imageFormat;
                     this.isIndexed = ImageUtils.IsIndexed(this.Image);
                     this.ShouldProcess = true;
@@ -762,7 +762,7 @@ namespace ImageProcessor
                 // We need to check here if the path has an extension and remove it if so.
                 // This is so we can add the correct image format.
                 int length = filePath.LastIndexOf(".", StringComparison.Ordinal);
-                string extension = ImageUtils.GetExtensionFromImageFormat(this.ImageFormat, this.originalExtension);
+                string extension = ImageUtils.GetExtensionFromImageFormat(this.ImageFormat, this.OriginalExtension);
                 filePath = length == -1 ? filePath + extension : filePath.Substring(0, length) + extension;
 
                 // Fix the colour palette of indexed images.
@@ -795,7 +795,7 @@ namespace ImageProcessor
                                     this.Image.Save(filePath, imageCodecInfo, encoderParameters);
                                     break;
                                 }
-                                catch (IOException)
+                                catch (Exception)
                                 {
                                     Thread.Sleep(200);
                                 }
@@ -817,7 +817,7 @@ namespace ImageProcessor
                             this.Image.Save(filePath, this.ImageFormat);
                             break;
                         }
-                        catch (IOException)
+                        catch (Exception)
                         {
                             Thread.Sleep(200);
                         }
diff --git a/src/ImageProcessor/Imaging/ImageUtils.cs b/src/ImageProcessor/Imaging/ImageUtils.cs
index a718a75a6..d60899863 100644
--- a/src/ImageProcessor/Imaging/ImageUtils.cs
+++ b/src/ImageProcessor/Imaging/ImageUtils.cs
@@ -27,12 +27,12 @@ namespace ImageProcessor.Imaging
         /// <summary>
         /// The image format regex.
         /// </summary>
-        private static readonly Regex FormatRegex = new Regex(@"(\.?)(j(pg|peg)|bmp|png|gif|ti(f|ff))", RegexOptions.Compiled | RegexOptions.IgnoreCase | RegexOptions.RightToLeft);
+        private static readonly Regex FormatRegex = new Regex(@"(\.?)(j(pg|peg)|bmp|png|gif|ti(ff|f))", RegexOptions.Compiled | RegexOptions.IgnoreCase | RegexOptions.RightToLeft);
 
         /// <summary>
         /// The image format regex for matching the file format at the end of a string.
         /// </summary>
-        private static readonly Regex EndFormatRegex = new Regex(@"(\.)(j(pg|peg)|bmp|png|gif|ti(f|ff))$", RegexOptions.Compiled | RegexOptions.IgnoreCase | RegexOptions.RightToLeft);
+        private static readonly Regex EndFormatRegex = new Regex(@"(\.)(j(pg|peg)|bmp|png|gif|ti(ff|f))$", RegexOptions.Compiled | RegexOptions.IgnoreCase | RegexOptions.RightToLeft);
 
         /// <summary>
         /// Returns the correct response type based on the given request path.
diff --git a/src/ImageProcessor/Processors/Format.cs b/src/ImageProcessor/Processors/Format.cs
index 16fc08973..ff8a0dcc0 100644
--- a/src/ImageProcessor/Processors/Format.cs
+++ b/src/ImageProcessor/Processors/Format.cs
@@ -25,7 +25,7 @@ namespace ImageProcessor.Processors
         /// <summary>
         /// The regular expression to search strings for.
         /// </summary>
-        private static readonly Regex QueryRegex = new Regex(@"format=(j(pg|peg)|png|png8|bmp|gif|tif)", RegexOptions.Compiled);
+        private static readonly Regex QueryRegex = new Regex(@"format=(j(pg|peg)|png|png8|bmp|gif|ti(ff|f))", RegexOptions.Compiled);
 
         #region IGraphicsProcessor Members
         /// <summary>
@@ -132,15 +132,17 @@ namespace ImageProcessor.Processors
                     isIndexed = true;
                     break;
                 case "tif":
+                case "tiff":
                     imageFormat = ImageFormat.Tiff;
                     break;
                 default:
-                    // Should be a jpeg.
+                    // Should be a jpeg or jpg.
                     imageFormat = ImageFormat.Jpeg;
                     break;
             }
 
             // Set the internal property.
+            factory.OriginalExtension = string.Format(".{0}", format);
             factory.Format(imageFormat, isIndexed);
 
             return factory.Image;
diff --git a/src/ImageProcessor/Processors/GaussianBlur.cs b/src/ImageProcessor/Processors/GaussianBlur.cs
index d6d697508..54b93dc9d 100644
--- a/src/ImageProcessor/Processors/GaussianBlur.cs
+++ b/src/ImageProcessor/Processors/GaussianBlur.cs
@@ -35,7 +35,7 @@ namespace ImageProcessor.Processors
         /// <summary>
         /// The sigma regex.
         /// </summary>
-        private static readonly Regex SigmaRegex = new Regex(@"sigma-\d+(.+\d+)?", RegexOptions.Compiled);
+        private static readonly Regex SigmaRegex = new Regex(@"sigma-\d+(.?\d+)?", RegexOptions.Compiled);
 
         /// <summary>
         /// The threshold regex.
diff --git a/src/ImageProcessor/Processors/GaussianSharpen.cs b/src/ImageProcessor/Processors/GaussianSharpen.cs
index 5bd4cacab..df20529d2 100644
--- a/src/ImageProcessor/Processors/GaussianSharpen.cs
+++ b/src/ImageProcessor/Processors/GaussianSharpen.cs
@@ -35,13 +35,14 @@ namespace ImageProcessor.Processors
         /// <summary>
         /// The sigma regex.
         /// </summary>
-        private static readonly Regex SigmaRegex = new Regex(@"sigma-\d+(.+\d+)?", RegexOptions.Compiled);
+        private static readonly Regex SigmaRegex = new Regex(@"sigma-\d+(.?\d+)?", RegexOptions.Compiled);
 
         /// <summary>
         /// The threshold regex.
         /// </summary>
         private static readonly Regex ThresholdRegex = new Regex(@"threshold-\d+", RegexOptions.Compiled);
         #endregion
+
         #region IGraphicsProcessor Members
         /// <summary>
         /// Gets the regular expression to search strings for.
diff --git a/src/ImageProcessor/Properties/AssemblyInfo.cs b/src/ImageProcessor/Properties/AssemblyInfo.cs
index 175d0cb71..74cebea3b 100644
--- a/src/ImageProcessor/Properties/AssemblyInfo.cs
+++ b/src/ImageProcessor/Properties/AssemblyInfo.cs
@@ -32,6 +32,6 @@ using System.Security;
 //
 // You can specify all the values or you can default the Build and Revision Numbers 
 // by using the '*' as shown below:
-[assembly: AssemblyVersion("1.8.1.1")]
-[assembly: AssemblyFileVersion("1.8.1.1")]
+[assembly: AssemblyVersion("1.8.1.2")]
+[assembly: AssemblyFileVersion("1.8.1.2")]
 
diff --git a/src/TestWebsites/NET45/Test_Website_NET45/Views/Home/Index.cshtml b/src/TestWebsites/NET45/Test_Website_NET45/Views/Home/Index.cshtml
index 6572d1734..0aa9fc37a 100644
--- a/src/TestWebsites/NET45/Test_Website_NET45/Views/Home/Index.cshtml
+++ b/src/TestWebsites/NET45/Test_Website_NET45/Views/Home/Index.cshtml
@@ -173,11 +173,11 @@
         <div class="row">
             <div class="col-s-6">
                 <h2>Gaussian Blur</h2>
-                <img src="/images/Penguins.jpg?width=300&blur=7" />
+                <img src="/images/Penguins.jpg?width=300&blur=11,sigma-1.5,threshold-10" />
             </div>
             <div class="col-s-6">
                 <h2>Gaussian Sharpen</h2>
-                <img src="/images/Penguins.jpg?width=300&sharpen=7" />
+                <img src="/images/Penguins.jpg?width=300&blur=11,sigma-1.5,threshold-10" />
             </div>
         </div>
     </section>