One of the new Filters in Photoshop CS6 is the Adaptive Wide Angle Filter which allows straightening of curved lines which a fish eye lens would give. The fish eye lens effect is great, but sometimes you may not want it. The effect can be removed.
This is the corrected image. The fish eye image is below.
This is an image taken with a fish eye lens. The letter box in the foreground and the buildings all have a curved line from the fish eye effect. Could it be possible to straighten them? Yes it can be done in Photoshop CS6.
Step 1 : Go to Filter >Adaptive Wide Angle.
Step 2 : The Adaptive Wide Angle Filter dialogue opens.
Step 3 : Look at the right top side. There is Correction.
Step 4 : You will find a drop down menu from Correction. I have clicked on Fisheye.
Step 5 : I have not clicked on OK as yet, but the photo has already been corrected to a great extent.
Step 6 : Click the Constrain Tool.
Step 7 : I have clicked with the Constrain Tool at the bottom and top of the Letter Box. The letter box is automatically straightened.
Step 8 : I have clicked on the building at the left and clicked on the bottom and top with the Constrain Tool straightening it.
Step 9 : I have clicked on the bottom and top of the building at the right with the Constrain Tool straightening it.
Step 10 : After straightening as many curved lines as possible, click OK.
The image looks like this.
Step 11 : Click the Magic Wand Tool.
Step 12 : Click the Magic Wand+SHIFT and click all the blank spaces to select them all.
Step 13 : Go to Select>Modify>Expand.
Step 14 : I have set the Expand By to 10 pixels. Click OK.
Step 15 : The marching ants expand as you can see.
Step 16 : Go to Edit>Fill.
Step 17 : Set the Use to Content Aware. Click OK.
Step 18 : Content Aware fills in the missing pixels, but does not do a perfect job. Look at the top corner and the bottom. But it has done its best.
Step 19 : Click the Patch Tool.
Step 20 : Make a selection. where the building appears in the sky.
Step 21 : Move the selection to a patch of empty sky.
Step 22 : Press CTRL+D to deselect. The building has disappeared. The sky looks perfect.
Step 23 : The bottom of the image presents presents a problem so I am cropping it out.
The straightened image using the Adaptive Wide Angle Filter.
Other Photoshop tutorials are here
