Computer Shopper - UK (2020-10)

ADVANCEDPROJECTS

ISSUE392|COMPUTER SHOPPER|OCTOBER 2020 117

Make sure the HQCamera is connected to
the Pi’s camera connector.Carefully liftthe
plastic cap of the connector and fully insert
the ribbon cable with its blue,non-contacts
side facing the flap.Then push the cap back
down to clamp the cable in place.
Once Raspberry Pi OS boots, followthe
wizard to set the language,password and
screen scaling and connect to your Wi-Fi

network. Agree to updatethe system, but don’t

reboot yet. Instead, open the Raspberry menu,

then Preferences, Raspberry Pi Configuration.

Open the Interfaces tab and enable the

camera. Then followtheprompt to reboot.

Once the Pi has rebooted, take atest

image just to be sure the hardware is working

properly.Open the Te rminal (Ctrl-Shift-T)and

enterraspistill -o test.jpg.You should see a

previewimage,and the test.jpg file will appear

in your documents folder.The image will be

blurry,itwon’t be framed very well, the white

balance and exposure might be wayoff, but

at least you knowthe hardware works.

Nowwe knowwe can take photos (and

video) with the HQCamera, we can move to

taking high-quality photos. Without a

viewfinder or live preview,using the HQ

Camera can be quiteawkward. To get alive

updateofthe camera’s view,enter

raspivid -t 0in the Te rminal to launch the

video recording ability of the Raspberry

Desktop OS. Yo ucan then adjust the aperture

of the lens, then the focus; we suggestdoing

so in that order.Tostopthe video,press Ctrl-C.

As you’re using the video command, the

framing is slightly tighter and the exposure

alittle lowerthanthe default (still)

photography command. Slower Pis might

also introduce alag between making an

adjustment and the live video updating.

Achieving perfect focuswiththe 6mm

Wide Angle lens is abit awkward as only the

⬆Use the C-CS adaptor (supplied with the HQ Camera) toattach the 16mm telephotolens