To create a perfect circle in Photoshop, use the Ellipse tool. To create an elliptical shape, first, draw a basic circle using the Rectangle or Oval tools. With the Ellipse tool, you can then adjust the size, shape, and angle of the ellipse.

There are a few ways to make a specific shape in Photoshop. One way is to use the Pen tool and draw a shape on the canvas. Another way is to use the Rectangle, Ellipse, or Path tools and create a rectangular, elliptical, or curved path. You can also use the Freeform Pen tool to create a freeform shape.

To create a circle in Photoshop without fill, use the Ellipse tool and draw a circle on the canvas. Press Ctrl+T to transform the Ellipse into a Path. Then use the Direct Selection tool to drag out a second circle that is slightly larger than the first. Use the Align Tool (A) to align the two circles so that their centers are aligned and press Enter to create the circle.

To isolate a circle in Photoshop, you can use the Ellipse tool. First, create a new layer and fill it with black. Then, use the Ellipse tool to draw a circle on the new layer.

There are a few ways to round the corners of a shape in Photoshop, but the easiest is to use the Rectangular Marquee Tool. First, create your shape by drawing a rectangle on the canvas. Next, select the Rectangular Marquee Tool (M) and drag out a rectangular selection around the border of your shape. Finally, press Enter/Return to finish creating your round corner.

There are a few ways to make a circle mask in Photoshop. One way is to use the Elliptical Marquee Tool (M) and draw a circle around the area you want to protect. Then, use the Lasso Tool (L) to select the entire circle. Finally, use the Delete key to remove the mask.

To cut a circle in half in Photoshop, use the Rectangular Marquee Tool (M) and draw a rectangle around the outside of the circle. Then, use the Cut Tool (X) to cut the rectangle in half.

There are a few ways to do this. One way is to use the mouse to click and drag the picture around. Another way is to use the keyboard shortcuts: Ctrl+C (copy) or Ctrl+V (paste).

If you want to round the corners of a picture, you can use a graphics program like Adobe Photoshop or GIMP. In Photoshop, you can use the “Round Corners” option on the “Image” menu. In GIMP, you can use the “Edit” menu and select “Round Corners.

In affinity, you can make a semi-circle by selecting the “Draw” tool and clicking on the center of the circle you want to create.