Khi tài liệu Photoshop chưa có vùng chọn, nếu muốn tạo được vùng chọn dạng hình tròn thì có thể chọn Elliptical Marquee Tool rồi drag chuột kết hợp với đè

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Khi tài liệu Photoshop chưa có vùng chọn, nếu muốn tạo được vùng chọn dạng hình tròn thì có thể chọn Elliptical Marquee Tool rồi drag chuột kết hợp với đè giữ phím