Popular photo editing programs can automatically fix the EXIF orientation when an image loads. They also update the meta if you rotate or flip an image manually. Programs including Photoshop, ACDSee, Picasa, GIMP and OSX Preview. However, some programs have been known not to do this, including Windows Photo Viewer, Microsoft Paint and Microsoft Office Picture Manager.

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There are 8 possible values (not just landscape and portrait!). The EXIF orientation value is used by Photoshop and other photo editing software to automatically rotate photos, saving you a manual task.

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Exiftool is a Perl library/command-line application allowing you to read and edit meta information in images. A standalone Windows executable is provided if you prefer not to use Perl:

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The solution is to use "invisible" brackets to balance things out, i.e. adding a \right. at the end of the first line, and a \left. at the start of the second line after &:

\[ F = G \left( \frac{m_1 m_2}{r^2} \right) \] Notice that to insert the parentheses or brackets, the \left and \right commands are used. Even if you are using only one bracket, both commands are mandatory. \left and \right can dynamically adjust the size, as shown by the next example:

When images are photographed, digital cameras use orientation sensors to store an EXIF orientation value for how the camera is held.

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Mac OS lets you quickly check the EXIF orientation in Preview. Open an image and press CMD+I to view the images properties.

Zoner Photo Editor is a photo organizer and editor with an image information feature for viewing EXIF orientation. Professional and free versions are available:

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Below are some programs that you can use for viewing and editing EXIF meta data. They'll also let you edit other types of image meta data - IPTC and XMP data - which can help protect your images with copyright information.

It's easy to check the EXIF of images in your Sirv account. All the meta data within your image - EXIF, XMP and IPTC meta - can be seen by appending ?info to the image URL. You'll see a JSON formatted text file, showing all the data.

To correct the orientation of images already uploaded to Sirv, use Sirv's image editor to rotate them. Right-click the image and choose "Edit image" to open the image editor.

The size of brackets and parentheses can be manually set, or they can be resized dynamically in your document, as shown in the next example:

The commands \Biggl and \biggr establish the size of the delimiters < and > respectively, with the l or r indicating whether it's the left or the right parenthesis. For a complete list of parentheses and sizes see the reference guide.

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When writing multi-line equations with the align, align* or aligned environments, the \left and \right commands must be balanced on each line and on the same side of &. Therefore the following code snippet will fail with errors:

On Linux, get EXIF info with Gimp or Image Magick (which is usually pre-installed). Get the orientation of an image on your computer with this command in the console (via ImageMagick):

Parentheses and brackets are very common in mathematical formulas. You can easily control the size and style of brackets in LaTeX; this article explains how.