Apparatus and method executed by apparatus
An apparatus comprising a sensor capable of generating a signal pair used in focus detection. The apparatus obtains, based on a defocus amount obtained using the signal pair, a focus distance of a lens unit that is mounted to the apparatus and adjusts a focus distance of the lens unit based on the obtained focus distance. When the lens unit is a multi-scopic lens unit having a plurality of optical systems having different axes, the apparatus obtains the focus distance using an adjustment value obtained based on an axis position that is a position on the sensor through which an axis of the multi-scopic lens unit passes.
1. An apparatus comprising:
a sensor capable of generating a signal pair used in focus detection;
at least one processor; and
a memory coupled to the at least one processor, the memory having instructions that, when executed by the processor, performs operations as:
an obtaining unit configured to obtain, based on a defocus amount obtained using the signal pair, a focus distance of a lens unit that is mounted to the apparatus; and
an adjusting unit configured to adjust a focus distance of the lens unit based on the obtained focus distance,
wherein when the lens unit is a multi-scopic lens unit having a plurality of optical systems having different optical axes, the obtaining unit obtains the focus distance using an adjustment value obtained based on an axis position that is a position on the sensor through which an axis of the multi-scopic lens unit passes.
2. The apparatus according to claim 1 ,
wherein the adjustment value is a shading correction value used to correct a difference between intensities of the signal pair.
3. The apparatus according to claim 1 ,
wherein the adjustment value is a conversion coefficient that converts an amount of shift in the signal pair into a defocus amount.
4. The apparatus according to claim 3 ,
wherein the conversion coefficient is based on a position of one of the axes of the plurality of optical systems, that is closest to a focus detection region.
5. The apparatus according to claim 1 ,
wherein the adjustment value is a correction value for correcting the focus distance that is based on the defocus amount.
6. The apparatus according to claim 1 ,
wherein when the lens unit has one axis, the obtaining unit obtains the focus distance using the adjustment value obtained by assuming that the axis passes through a center of the sensor.
7. The apparatus according to claim 1 , wherein the at least one processor further performs operations as:
a determining unit configured to determine whether the lens unit is the multi-scopic lens unit.
8. The apparatus according to claim 1 , wherein the at least one processor further performs operations as:
an acquiring unit configured to acquire the axis position from the multi-scopic lens unit.
9. The apparatus according to claim 1 , further comprising:
a storage device that stores an axis position of the multi-scopic lens unit.
10. The apparatus according to claim 1 ,
wherein the multi-scopic lens unit is a lens unit in which the plurality of optical systems are provided in a single lens barrel.
11. The apparatus according to claim 1 ,
wherein at least some of a plurality of pixels in the sensor include a plurality of photodiodes sharing a microlens provided for a corresponding one of the plurality of pixels, and the signal pair is generated from signals from pixels having the plurality of photodiodes.
12. The apparatus according to claim 1 ,
wherein the sensor includes a plurality of pixels, and at least some of the plurality of pixels are dedicated pixels for generating the signal pair.
13. A method executed by an apparatus including a sensor capable of generating a signal pair used in focus detection, the method comprising:
obtaining, based on a defocus amount obtained using the signal pair, a focus distance of a lens unit that is mounted to the apparatus; and
adjusting a focus distance of the lens unit based on the obtained focus distance,
wherein when the lens unit is a multi-scopic lens unit having a plurality of optical systems having different axes, the obtaining includes obtaining the focus distance using an adjustment value obtained based on an axis position that is a position on the sensor through which an axis of the multi-scopic lens unit passes.
14. The method according to claim 13 ,
wherein the adjustment value is a shading correction value used to correct a difference between intensities of the signal pair.
15. The method according to claim 13 ,
wherein the adjustment value is a conversion coefficient that converts an amount of shift in the signal pair into a defocus amount.
16. The method according to claim 13 , further comprising:
acquiring the axis position from the multi-scopic lens unit.
17. A non-transitory computer-readable medium storing a program executable by a computer included in an apparatus having a sensor capable of generating a signal pair used in focus detection, the program causes, when executed by the computer, to perform a method comprising:
obtaining, based on a defocus amount obtained using the signal pair, a focus distance of a lens unit that is mounted to the apparatus; and
adjusting a focus distance of the lens unit based on the obtained focus distance,
wherein when the lens unit is a multi-scopic lens unit having a plurality of optical systems having different axes, the obtaining includes obtaining the focus distance using an adjustment value obtained based on an axis position that is a position on the sensor through which an axis of the multi-scopic lens unit passes.
18. The non-transitory computer-readable medium according to claim 17 , wherein the adjustment value is a shading correction value used to correct a difference between intensities of the signal pair.
19. The non-transitory computer-readable medium according to claim 17 ,
wherein the adjustment value is a conversion coefficient that converts an amount of shift in the signal pair into a defocus amount.
20. The non-transitory computer-readable medium according to claim 17 , further comprising:
acquiring the axis position from the multi-scopic lens unit.
21. An apparatus comprising:
a sensor capable of generating a signal pair used in focus detection;
at least one processor; and
a memory coupled to the at least one processor, the memory having instructions that, when executed by the processor, performs operations as:
an obtaining unit configured to obtain a defocus amount based on the signal pair; and
a control unit configured to perform a focus control operation based on the defocus amount,
wherein the obtaining unit obtains the defocus amount using an adjustment value according to positions of a plurality of optical axes of a multi-scopic lens unit having multiple imaging optical systems with different optical axes.
22. The apparatus according to claim 21 ,
wherein the adjustment value is a shading correction value used to correct a difference between intensities of the signal pair.
23. The apparatus according to claim 21 ,
wherein the adjustment value is a conversion coefficient that converts an amount of shift in the signal pair into the defocus amount.
24. The apparatus according to claim 23 ,
wherein the conversion coefficient is based on a position of one of the axes of the plurality of optical systems, that is closest to a focus detection region.
25. The apparatus according to claim 21 ,
wherein the adjustment value is a correction value for correcting a focus distance that is based on the defocus amount.
26. The apparatus according to claim 21 , wherein the at least one processor further performs operations as:
an acquiring unit configured to acquire the axis position from the multi-scopic lens unit.
27. The apparatus according to claim 21 , further comprising:
a storage device that stores the axis position of the multi-scopic lens unit.
28. The apparatus according to claim 21 ,
wherein the multi-scopic lens unit is a lens unit in which the plurality of optical systems are provided in a single lens barrel.
29. The apparatus according to claim 21 ,
wherein at least some of a plurality of pixels in the sensor include a plurality of photodiodes sharing a microlens provided for a corresponding one of the plurality of pixels, and the signal pair is generated from signals from pixels having the plurality of photodiodes.
30. The apparatus according to claim 21 ,
wherein the sensor includes a plurality of pixels, and at least some of the plurality of pixels are dedicated pixels for generating the signal pair.
31. A method executed by an apparatus including a sensor capable of generating a signal pair used in focus detection, the method comprising:
obtaining a defocus amount based on the signal pair; and
controlling a focus control operation based on the defocus amount,
wherein the obtaining obtains the defocus amount using an adjustment value obtained based on an axis position through which an axis of a multi-scopic lens unit passes,
wherein the multi-scopic lens unit has a plurality of optical systems having different optical axes.
32. A non-transitory computer-readable medium storing a program executable by a computer included in an apparatus having a sensor capable of generating a signal pair used in focus detection, the program causes, when executed by the computer, to perform a method comprising:
obtaining a defocus amount based on the signal pair; and
controlling a focus control operation based on the defocus amount,
wherein the obtaining obtains the defocus amount using an adjustment value obtained based on an axis position through which an axis of a multi-scopic lens unit passes,
wherein the multi-scopic lens unit has a plurality of optical systems having different optical axes.