App Options

OK, there are a few too many options in the HiLO Lens app! The least we owe you, is an explanation:

Photo Settings

Viewfinder Lens Correction

We correct for barrel distortion introduced by the wide angle lens. The vertical and horizontal lines in your scene will appear straight.
The viewfinder can show the corrected image live but this will consume power. To increase battery life leave this option off. 

Photo Resolution

A high resolution image will use the full camera sensor e.g. 5megapixels on an iPhone4, 8 megapixels on an iPhone5.
A low resolution will use the iOS AVCaptureSessionPresetMedium preset which is device specific. This is OK for photos that are shared on the iPhone screen but they are much smaller than the high resolution images.

Image Compression

Your photos are saved in JPEG format which allows for image compression. When set to None, no compression is applied and the file will be large with maximum detail. When set to low compression quality is 95% which gives very high quality while significantly reducing file size. When set to medium compression quality is 80% which still gives good quality while further reducing file size.

Square Photos

Turn ON to take square photos, popular on social media like Instagram. The aspect ratio is reduced from 4:3 to 1:1 so the image is cropped. The Field of View option should be set to Wide to recover the scene that would otherwise be cropped. The wide angle lens shines in this configuration!

Field of View

The HiLO Lens is a wide angle lens, resulting in a field of view about 140% larger than the standard iPhone camera lens.
The Standard Field of View mode uses the central part of the HiLO Lens which has the best image quality. By default the image is cropped to provide the Standard field of view.
The Wide Field of View mode uses the full sensor so a much wider scene is captured. There can be some reduction in image quality toward the edges of the image, this is most noticeable with poor lighting.
When using the Square Photos option the image is cropped so the Wide Field of View is very effective.
The Straighten Photo option corrects for barrel distortion and this improves the image quality toward the corners. Enable the Straighten Photo option with the Wide Field of View.

Shutter Delay

To use the shutter delay hold your finger on the shutter button for at least 2 seconds. To disable this feature set the Shutter Delay option to 0 seconds.
The Shutter Delay sets the duration of the countdown in seconds prior to taking a photo. You can use this to get selfies or group shots.
Hold your finger on the shutter button for at least 2 seconds to disable the Shutter Delay mode.
The Continuous Shutter mode will take photos every Shutter Delay seconds. This is great for getting selfies or group shots because instead of waiting for the count down you can take photos every few seconds and then choose the best one.
To disable the Continuous Shutter mode hold your finger on the shutter button for at least 2 seconds.

Screen Flash

A white flash to indicate a photo is being taken, this simulates a shutter.

Video Settings

Lens Correction

Corrects for barrel distortion introduced by the wide angle lens. With Lens Correction ON the vertical and horizontal lines in your scene will appear straight.
This feature is OFF by default because it requires a lot of processing power. Use it with the iPhone5 or newer models for best results.

Video Resolution

High mode is the best video resolution supported by the device.
Medium mode will use 720p video format if it is supported by the device
Low mode will use 540p video format if it is supported by the device

Portrait Video Aspect

Traditionally video is displayed in landscape format e.g. 16:9 aspect ratio. Portrait video e.g. aspect ratio 9:16 will only use a small portion of a television display.
The 9:16 mode will provide normal portrait video that is not well suited to display on a wide screen display.
The 16:9 mode will provide landscape video that suited to display on a wide screen displays. This is achieved by cropping the portrait video (and preview) so the field of view is reduced. The wide angle nature of the HiLO Lens helps to improve the result.
The 3:4 mode will provide portrait video that is not well suited to display on a wide screen displays.
The 4:3 mode will provide landscape video that suited to display on a wide screen displays. This is achieved by cropping the portrait video (and preview) so the field of view is reduced. The wide angle nature of the HiLO Lens helps to improve the result. The cropping for this aspect ratio is much less than the cropping required for the 16:9 aspect ratio.

Landscape Video Aspect

Some displays are better suited to 4:3 aspect video instead of the more recent 16:9 aspect ratio standard.
16:9 mode uses the full video field of view
4:3 mode crops the video (and preview)

Record Audio

Recording audio requires the device’s processor to do many calculations and this takes time and energy. If you do not need audio e.g. you will add a sound track later, then disable the Record Audio option because this will save battery power and allow for the maximum video frame rate.Earlier devices like the iPhone4 and iPad2 struggle to record audio and video of good quality at the same time.

Silent Shutter

Turn on/off the beep indicating the start/finish of video recording. 

Voice Control

Voice Control


Enable for voice control of the app. Each voice command is prefixed with the Command Prefix. The default prefix is HI LO pronounced “high low”
The supported commands are:
  • “High low photo mode”
  • “High low take a photo”
  • “High low video mode”
  • “High low begin video”
  • “High low end video”
You can change the Command Prefix option to another word.
A command not mentioned in the iTunes App Store description is “High low are you there?”

Command Prefix

When voice recognition is enabled each voice command is prefixed with the Command Prefix. The default prefix is HI LO pronounced “high low”

Display Phrases

Choose how to display the detected voice control commands on the screen. The voice recognition has a limited vocabulary and it will try to interpret any sound to be one of the words in the vocabulary. For this reason we use command phrases to reduce the chance of a mistake.
The Verbose mode will show all detected words. This is useful for understanding how effective the voice recognition is.
The Prefix Only mode will only show phrases that begin with the Command Prefix
The Disabled mode will not show any text for the voice recognition

Gesture Support

Rotate

Enable to allow the two finger rotate gesture to rotate the preview. This is particularly useful when the device is being held in a natural, inclined position for observing the screen. The inclination can result in a rotation of the preview depending on the orientation of the HiLO Lens.
The easiest rotation gesture is to place index finger and thumb tips on the screen then twists like taking the cap off a bottle.

Pinch

Enable two finger pinch gesture to zoom in and out. This is useful in combination with the Rotate option to frame images so there is no clipping in the corners when rotated.

Nitty Gritty

Disable Auto-Lock

Stop the iOS Auto-Lock feature from locking the device. This is useful when recording long videos because the Auto-Lock feature will disable the camera if the device is not touched for the time specified in iOS Settings > General > Auto-Lock

Screen Dimmer (sec.)

Set to 0 to disable (this is the default). Set to a number greater than 0 and the screen will dim if there are no touchscreen events after that number of seconds. This is useful when recording long videos because the dimmed screen will conserve battery power. To get access to the screen after it is dimmed simply touch the screen. This is not the same as the iOS Auto-Lock feature which disables the camera.

GPS Location

Enable to have GPS location information saved in EXIF photo metadata. If you do not want the photograph to include location information then disable this option.

Show Help

Show or hide the splash screen with help when the app is launched

Restore Defaults

Restore all the options to the original settings

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