Digital photographing apparatus, and method for providing bokeh effects

1. A digital photographing apparatus comprising:

a lens unit;

an iris in which an iris pattern, that defines a transmission area of incident light according to a signal, is determined;

an imaging device that converts the incident light into an electrical signal;

an iris control unit which controls to form the iris pattern in the iris; and

a post processing unit which generates a first image captured using a default iris pattern, a second image captured using an iris pattern determined according to a user input signal, and a resultant image by synthesizing the first and second images.

2. The digital photographing apparatus of claim 1 , wherein the iris control unit determines a selected shape of the iris pattern according to a user input.

3. The digital photographing apparatus of claim 1 , wherein the iris control unit determines a size of the transmission area according to an iris opening setting.

4. The digital photographing apparatus of claim 1 , wherein the iris control unit adjusts a transmission degree of the transmission area to three or more states.

5. The digital photographing apparatus of claim 1 , further comprising:

a subject detection unit that detects a main subject; and

a post processing unit that provides an improved resolution of the main subject.

6. The digital photographing apparatus of claim 1 , further comprising an iris pattern generation unit that generates the iris pattern according to a shape of an object in an input image.

7. A method of controlling a digital photographing apparatus, wherein the digital photographing apparatus comprises an iris in which an iris pattern, for defining a transmission area of incident light according to an electrical signal, is determined, the method comprising:

determining the iris pattern according to a user input signal;

controlling to form the iris pattern in the iris;

capturing an image;

generating a first image by photographing using a default iris pattern;

generating a second image by photographing using the iris pattern determined according to the user input signal; and

generating a resultant image by synthesizing the first and second images.

8. The method of claim 7 , further comprising determining a size of the transmission area according to an iris opening setting.

9. The method of claim 7 , further comprising adjusting a transmission degree of the transmission area to three or more states.

10. The method of claim 7 , further comprising:

detecting a main subject from a captured image; and

improving a resolution of the main subject.

11. The method of claim 7 , further comprising generating the iris pattern according to a shape of an object in an input image.

12. A non-transitory computer-readable recording medium for storing computer program code which performs a method of controlling a digital photographing apparatus when the computer program code is read and executed by a processor,

wherein the digital photographing apparatus comprises an iris in which an iris pattern, for defining a transmission area of incident light according to an electrical signal, is determined, and

wherein the method of controlling the digital photographing apparatus comprises:

determining the iris pattern according to a user input signal;

controlling to form the iris pattern in the iris;

capturing an image;

generating a first image by photographing using a default iris pattern;

generating a second image by photographing using the iris pattern determined according to the user input signal; and

generating a resultant image by synthesizing the first and second images.

13. The non-transitory computer-readable recording medium of claim 12 , wherein the method of controlling the digital photographing apparatus further comprises determining a size of the transmission area according to an iris opening setting.

14. The non-transitory computer-readable recording medium of claim 12 , wherein the method of controlling the digital photographing apparatus further comprises adjusting a transmission degree of the transmission area to three or more states.

15. The non-transitory computer-readable recording medium of claim 12 , wherein the method of controlling the digital photographing apparatus further comprises:

detecting a main subject from the captured image; and

improving a resolution of the main subject.

16. The non-transitory computer-readable recording medium of claim 12 , wherein the method of controlling the digital photographing apparatus further comprises generating the iris pattern according to a shape of an object in an input image.