HTC One M8 User Manual page 141

3. On the Custom Effects screen you can:
Make changes to the filter by adjusting the controls on
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exposure, saturation, white balance, and more.
Rearrange filters to modify the effect. Press and hold the filter
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you want to move. Then drag it to a new position.
Remove filters. Press and hold the filter you want to remove.
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Then drag it to Remove.
Tap
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4. Tap Save Preset to name your filter and save it. After saving your
filter, you'll see a preview of your photo with the filter applied.
5. Tap to save the modified photo as a new photo.
to add more filters.
Gallery 141