Do you want to vertically rotate photos taken while holding the iPhone horizontally? If you use the editing function of the "Photos" app and rotate it 90 degrees, you can convert it to portrait for the time being, but turn to the sky The subject should be sideways. On the other hand, if you want to make a vertically long photo with the orientation upside down, you have to crop it with the edit function.
Cropping a photo will reduce the number of pixels. However, when targeting a photo taken with the rear camera of the iPhone 11 series (wide, 4032 × 3,024 pixels at wide angle), even if cropping with an aspect ratio of 3: 2: 4, 2,268 × 3,024 pixels Because it can be secured, it is reasonable in terms of the number of pixels / information amount. If you make the photo longer in the vertical direction, you can compose a composition that emphasizes the depth and height in the upward direction, so it may be attractive enough to compensate for the loss of information.
To crop a photo vertically, with the desired photo displayed in the Photos app, tap Edit, then tap the crop / rotate button at the bottom of the screen. Tap the screen ratio change button on the upper right that appears and select “4: 3” to tap the vertical button that can be checked, and you can cut through the photo with a horizontal 3: vertical 4 aspect ratio. Drag the photo left or right to adjust the crop area.
The "Photos" app retains the state before editing the photo (original), so you can always return to the state before cropping. If you're confused whether the photo is in landscape or portrait orientation, you may want to take a stance of taking a portrait and cropping the part you like.