D-Link has equipped its motorized outdoor camera with a 4 megapixel sensor and wide-angle optics allowing it to deliver images up to 2560 x 1440 pixels with a horizontal viewing angle of 105°. During our tests, however, only live allowed us to enjoy the maximum definition. Surveillance recordings, triggered by a detection therefore, do not exceed 1920 x 1080 pixels, whether by storing them on a memory card or in the cloud. Note that it is also possible, in the first case, to lower the definition to 1280 x 720 pixels in order to save space. No quality adjustment is offered with the cloud, the allocated space being calculated on an hourly basis (7 or 14 days depending on the formula).
However, it would have been good to be able to at least choose a playback quality in order to be able to access the recordings more easily in the event of a bad connection. Maybe it’s possible to enjoy 2K with an ONVIF recorder, but we didn’t have one on hand. We have therefore chosen to retain our Full HD recordings to carry out our usual comparison, which here opposes the HB8 2K + camera from Ezviz to that of D-Link, as always with images taken in daylight and in the dark. . The DCS-8635LH of course provides infrared vision, but no projector or other options for that matter, whether to correct exposure or colorimetry.
The D-Link camera offers decent image quality. Despite its 1080p definition, the extract selected for this comparison provides a good level of detail. The Ezviz camera, with its 2K images, certainly does a little better, but it is above all in the management of exposure and image processing that the two models stand out. Our photo scene appears overexposed in the DCS-8635LH image, which therefore loses a lot of information in the bright areas, while the very strong sharpening of the Ezviz camera allows it to better bring out detail through the image. .
Unfortunately, it is not its infrared vision that allows the DCS-8635LH to turn the tide. If the HB8 2K + manages to maintain a level of detail similar to that observed during the day once plunged into the dark thanks to its own, this is far from being the case for the D-Link camera. The image of the latter lacks sharpness and many details merge with the background, in particular the finest facial features. It may therefore be difficult to recognize an intruder on a night recording, and we can add that no projector is offered here to switch to color vision as with the Ezviz camera.
What we observed on our photo scene was confirmed during our identification test. It is difficult to recognize a face beyond 3 meters on the images captured by the D-Link DCS-8635LH and its infrared vision, while a person can be identified beyond 4 meters with the Ezviz model. However, this average image quality does not prevent the D-Link camera from offering detection. Movements are detected from the end of our lab, ie 10 meters away, and people from 9 meters away thanks to artificial intelligence. It should also be noted that the infrared vision engages after 3 seconds in the dark.