Have you ever taken a photo that you wished the background was just a little darker? You can achieve this by changing the aperture or the distance of the subject.
However, there is a relatively quick way to slightly modify blur in background processing. In this article, we can slightly blur the background of our portraits and people by using the Magnetic Lasso tool in Photoshop.
All you have to do is open the desired photo in Photoshop (when you open Photoshop, double-click on the blank page and select the desired photo). Then select the teardrop shape from the menu on the left and start clicking on the screen several times.
Just as easily! If you want the size of the blurring ring to be larger, right-click and resize it. This simple method is also explained in the following video:
More accurate method
First open your desired image in Photoshop and copy your background layer with the opposite menu (Layer> Duplicate Layer). Then select the Magnetic Lasso tool. If you have not used this tool recently, you may need to right-click on the lasso tool and then click on the magnetic lasso tool from the fly-out menu; As shown below
Select the desired theme with the tool
Using the Lasso Magnetic tool (just select the L button on the keyboard to select it), start by clicking anywhere next to the target. You will find that the Magnetic Lasso tool starts to “stick” to what it thinks is your goal. Select it by clicking the mouse regularly around the perimeter of your target.
If the Magnetic Lasso tool moves where you do not want it, press the delete button on your keyboard to return to the last correct point.
You should definitely know that when you are working with the Magnetic Lasso tool you can not do anything else with Photoshop until you close the lasso loop by connecting the start point to the end point or until you press “Esc” on your keyboard To remove all your base points.
When you close the lasso loop, go to (Select> Modify> Feather) or press Shift + F6 and make your selection with 5-10 pixels.
Invert the selection to select the background
You have to reverse your choice to blur the background instead of the subject. To do this, go to Select> Inverse or press Ctrl + Shift + I If you notice a dashed line around the border of your image, you have changed your selection correctly.
Add blur effect
Once you have reversed your selection, it is time to blur the background of your image. Click Filter> Blur> Gaussian Blur. Next, play with its slider a bit.
Please note that this technique is not intended to create a clear background. Instead, it blurs the image a bit. As such, I usually choose a 5-10 pixel radius for the blur filter.
Do not worry, play a little with this tool. Use the preview check box to see what your image looks like when using different values.
When you run the Gaussian Blur filter, press Ctrl + D to deselect your image. If parts of your image are blurry and should not be, add a layer mask to the layer and remove any of these blurred areas. As you can see, this is a subtle technique and helps to focus more on certain areas of the photo.