To rotate the item to the right, press and hold the Option key, then click the button as many times as needed. Rotate images: Click as many times as needed. View images as a grid of larger thumbnails: Click. Increase or decrease the size of the thumbnails: Drag the slider. Use the tools in the Image Capture toolbar to change how the thumbnails are shown: In the Image Capture app on your Mac, select the device in the Devices or Shared list. You may be asked to unlock your device with a passcode or to trust the device. Connect your device to your computer using a cable, then turn the device on.