An interchangeable lens assembly includes a plurality of lens-side claw portions configured to enable engagement with a plurality of camera-side claw portions, and a lock pin concave portion in which a lock pin is inserted. Furthermore, θ1 is an angle formed by a line passing through a fifth lens-side end and an optical axis, and a line passing through a center of a lock pin concave portion and the optical axis, and θ2 is an angle formed by a line passing through a fourth lens-side end and the optical axis, and a line that passes through the center of the lock pin concave portion and the optical axis. In the above, θ1 and θ2 satisfy a predetermined conditional expression.

An interchangeable lens assembly includes a plurality of lens-side claw portions configured to enable engagement with a plurality of camera-side claw portions, and a lock pin concave portion in which a lock pin is inserted. Furthermore, θ1 is an angle formed by a line passing through a fifth lens-side end and an optical axis, and a line passing through a center of a lock pin concave portion and the optical axis, and θ2 is an angle formed by a line passing through a fourth lens-side end and the optical axis, and a line that passes through the center of the lock pin concave portion and the optical axis. In the above, θ1 and θ2 satisfy a predetermined conditional expression.

An imaging apparatus to which an accessory apparatus is attachable includes a camera controller configured to communicate with the accessory apparatus. The camera controller receives first information on a data size receivable by the accessory apparatus, performs a setting for a data size to be transmitted to the accessory apparatus based on the first information, and communicate with the accessory apparatus based on the setting.

An imaging apparatus to which an accessory apparatus is attachable includes a camera controller configured to communicate with the accessory apparatus. The camera controller receives first information on a data size receivable by the accessory apparatus, performs a setting for a data size to be transmitted to the accessory apparatus based on the first information, and communicate with the accessory apparatus based on the setting.

An image pickup device, provided with a camera unit that is provided with a lens barrel, an autofocus unit disposed on the outside of the lens barrel, a lens barrel holding member that holds the lens barrel, and a camera case that engages the lens barrel holding member and covers the autofocus unit, the camera unit provided with a base member that supports the camera unit rotatably around a rotation axis, and a regulating member that restricts the rotation of the camera unit to a first rotation range. In the image pickup device, the camera case engages with the lens barrel holding member when the camera unit is in the first rotation range, the regulating member being detachable, and the camera case being detachable from the lens barrel holding member when the camera unit is in the second rotation range.

Provided is an attachment system for coupling a mobile computing device to an optic device. The optic device may be, but is not limited to a scope, binoculars or the like. The attachment system operates with attachment devices and mounting device with apertures that provide a means to couple a mobile computing device to the optic device in such a way that the attachment system provides a line-of-sight between a camera of the mobile computing device with the lens of the optic device. This allows the camera of the mobile computing device to capture images and video using the high power zoom functionality of the optic device and the convenience of the mobile computing device.

An adapter device includes a first mount and a second mount. The first mount is fastened to the adapter device by multiple screws, and has first through third mount recesses and first through third mount claws disposed following a circumferential direction. The second mount is fastened to the device by multiple screws, and has fourth through sixth mount claws and fourth through sixth mount recesses disposed following the direction. The first through third mount claws are insertable to mount recesses on an imaging apparatus, the fourth through sixth mount claws are insertable to mount recesses on an accessory, and the smallest angle range of the first through third mount recesses in the direction of the first mount is not greater than the smallest angle range of the fourth through sixth mount claws in the direction of the second mount.

An adapter device includes a first mount and a second mount. The first mount is fastened to the adapter device by multiple screws, and has first through third mount recesses and first through third mount claws disposed following a circumferential direction. The second mount is fastened to the device by multiple screws, and has fourth through sixth mount claws and fourth through sixth mount recesses disposed following the direction. The first through third mount claws are insertable to mount recesses on an imaging apparatus, the fourth through sixth mount claws are insertable to mount recesses on an accessory, and the smallest angle range of the first through third mount recesses in the direction of the first mount is not greater than the smallest angle range of the fourth through sixth mount claws in the direction of the second mount.

Systems and processes for cameras with a reconfigurable lens assembly are described. For example, some methods include automatically detecting that an accessory lens structure has been mounted to an image capture device including a mother lens and an image sensor configured to detect light incident through the mother lens, such that an accessory lens of the accessory lens structure is positioned covering the mother lens; responsive to detecting that the accessory lens structure has been mounted, automatically identifying the accessory lens from among a set of multiple supported accessory lenses; accessing an image captured using the image sensor when the accessory lens structure is positioned covering the mother lens; determining a warp mapping based on identification of the accessory lens; applying the warp mapping to the image to obtain a warped image; and transmitting, storing, or displaying an output image based on the warped image.

Systems and processes for cameras with a reconfigurable lens assembly are described. For example, some methods include automatically detecting that an accessory lens structure has been mounted to an image capture device including a mother lens and an image sensor configured to detect light incident through the mother lens, such that an accessory lens of the accessory lens structure is positioned covering the mother lens; responsive to detecting that the accessory lens structure has been mounted, automatically identifying the accessory lens from among a set of multiple supported accessory lenses; accessing an image captured using the image sensor when the accessory lens structure is positioned covering the mother lens; determining a warp mapping based on identification of the accessory lens; applying the warp mapping to the image to obtain a warped image; and transmitting, storing, or displaying an output image based on the warped image.