* CANON MEASUREMENT TEST
The visual test of multimedia projector Canon WX450 ST was quite interesting. The projector is unusual, from the new arrivals, it has quite unexpected specialization, which makes you expect from it serious results in the “chosen specialty. The choice of modes is laconic in spartan manner: Standard, Presentation, Photo and DICOM SIM. For the visual evaluation, the Standard mode was selected, while the default mode for physicians was DICOM SIM. Reset to default settings left this “healing” mode as a priority which speaks eloquently about the new field of projection technique.
Device: Nikon D7000, Lens: 11-16mm f/2.8G, Focal Length: 11 mm, Focus Mode: AF-S, AF-Area Mode: Auto, Exposure Aperture: f/7.1, Shutter Speed: 1/80s, Exposure Mode: Aperture Priority, Exposure Comp.: 0EV, Metering: Matrix, ISO Sensitivity: ISO 125.
The projector coped decently with the shade test. On the test picture to evaluate shadows whether they fail or not ? , everything looks quite good. In general, you could see the gradations of shadows. I want to say right away that the picture is not just bright, but very, very bright. Not in the sense that it’s bright, but very bright, which is a plus for a large audience. You could read a newspaper in a dark room from the light of the screen. Will the image be as flawless??
Device: Nikon D7000, Lens: 11-16mm f/2.8G, Focal Length: 11mm, Focus Mode: Manual, Exposure Aperture: f/2.8, Shutter Speed: 30 sec, Exposure Mode: Manual, Metering: Matrix, ISO Sensitivity: ISO 100.
We specified the requirements to this novelty according to the Hamburg account – as to the cinema projectors of Hi End level. And from such a maximalist point of view they complained that color rendering didn’t reach the stated level. In the picture from the previous test cinema projector we could see a distinct reddish tint in the relatively bright parts of the stones.
I had the image on calibrated IPS screen of notebook and projector at the same time, so I was able to compare the image head-on. There is a difference. You can’t say the image was bad, but it is definitely not as it should be in an ideal case – most likely there are too many reds in the color gamut of the projector.
Device: Nikon D600, Lens: 8mm f/3.5D, Focal Length: 8 mm, Focus Mode: Manual, AF-Area Mode: Single, Exposure Aperture: f/8, Shutter Speed: 1/60 sec, Exposure Mode: Aperture Priority, Exposure Comp.: +1.0EV, Metering: Matrix, ISO Sensitivity: ISO 100
This is the image I took as the basis for the midtones. The picture turned out quite nice. The tonal gradation was fine. On the sky there were no overexposed areas with faint colors pasteurization . The ground around the cross did seem a bit reddish, but in the lighter parts of the image I did not see eye-catching color variations. I had my doubts, whether the projector is able to capture the complex texture of dry grass.
Small color gradation with significant gradation of lightness is a difficult scene to display. The Canon projector performed decently. No conspicuous gaps that could interfere with the image perception.
Device: Nikon D90, Lens: VR 18-105mm f/3.5-5.6G, Focal Length: 62 mm, Focus Mode: AF-S, AF-Area Mode: Auto, Exposure Aperture: f/8, Shutter Speed: 1/1000 sec, Exposure Mode: Programmed Auto, Exposure Comp.: 0EV, Metering: Matrix, ISO Sensitivity: Auto ISO 200 .
It was decided to check the bright areas with a photo from the Navy Day. Auto Metering malfunction caused the smoke screen behind the ship to be a solid half-light. The smoke in front of the ship, on the other hand, is close to a lit plume, but unlit and rich with various variations in both light and color.
The projector we tested did pretty well. No highlighted areas were visible, but the details in the highlights were not as perfect as we saw in the cinematography models.
Device: Nikon D90, Lens: VR 105mm f/2.8G, Focal Length: 105 mm, Focus Mode: Manual, AF-Area Mode: Single, VR: ON, Exposure Aperture: f/13, Shutter Speed: 1/200 sec, Exposure Mode: Aperture Priority, Exposure Comp.:+1.0EV, Metering: Matrix, ISO Sensitivity: ISO 400.
With the daisy and the raindrop, you can assess in more detail how the details and tones are in the light gradation zone. The conclusion is this – I didn’t see any droplets on the bottom petal of the daisy, other than the ones hanging off of it.
Not to say that the test is a failure, but ideally, all the droplets should be in their proper place. The test picture with the daisy is certainly a kind of “mezzo-soprano” for Hi End. Not every device has to hit that note, you can perform just as gracefully with the “baritone”… As the following photo vividly shows.
Device: Nikon D600, Lens: 8 mm f/3.5-1.4D, Focal Length: 8 mm, Focus Mode: Manual AF-Area Mode: Single, Exposure Aperture: f/8, Shutter Speed: 1/40 sec, Exposure Mode: Aperture Priority, Exposure Comp.: +1.0EV, ISO Sensitivity: ISO 100.
A stony ridge running out to sea, to assess the accuracy of color temperature and color saturation. The image itself is initially warm if the projector or monitor makes it even warmer, this is immediately visible. If it is cold, the image is not atmospheric, not real.
The projector did quite well – it was “neither hot nor cold”, but quite realistic. The only thing that caught my eye was that the light areas seem to be a little bit warmer than the dark ones.
And the picture has a reddish tint. Not parasitic, but not intrinsic to the entire frame, such as water. A reddish tint is literally coming through on the rocks, which should be yellow-orange. It didn’t look flashy like, say, red eyes or a red face in a photograph. The image looked quite harmonious, but with its “proletarian” character.
Color saturation is quite good, I think that the projector does not cover the whole sRGB, but is close enough to this standard. The high brightness makes the colors seem too bright. This is not bad at all, taking into consideration that the test was carried out in a dark room, which means that in real life there is a large margin of brightness to “fight” the ambient light.
Conclusions
Projector gives a pretty good picture. It is very bright, which should provide a good image in conditions of strong external light.
The color temperature does not cause significant complaints and is very close to perfect.
The general image contrast is up to the mark, visual gamma values are close to the reference ones.
Details in the shadows are clearly visible. Details in the bright areas are not so clearly visible. For the sake of fairness it should be noted that for the overwhelming majority of projectors this situation is absolutely normal.
As for color presentation, there are nuances due to the shift in the color gamut relative to the sRGB standard. On the one hand the picture is very close to how it should be, at least the differences in a large audience are not striking. But the photographer will see the difference in his own test images, of course.
However, the last test shot removes all questions about color nuances, because it clearly shows quite different nuances – the X-ray image, and with them the new profession of the projector Sapop – assistant doctor.
Can you please provide more details or clarify what exactly the diagnosis refers to in the context of the visual test of the Canon WX450 ST projector? Are you asking about the quality or effectiveness of the projected image?