Αγορά νέας 55-65"

papasouzakias said:

Κανείς δεν πρόκειται να τα βάλει με τη Samsung. Όταν ψέλισε ο Vincent του HDTV κατι για καμπύλες EOTF στο κανάλι του στο youtube

Spoiler

www.youtube.com/watch?v=JvgQi2Gbqec

η Samsung τον έκανε ban από όλες τις εκδηλώσεις της χώρια το bullying που δέχτηκε στο κανάλι του με αποτέλεσμα να μαλακώσει.

Click to expand...

Werewolf said:

Δεν φτανει που η samsung με τα φιλτρα για καλυτερη γωνια θεασης,χανει σε contrast modulation, τωρα και με την επεξεργασια A.I. οπου εφαρμοζει dynamic pixel quad rendering, της κοστιζει σε επιπλεον contrast, φωτεινοτητα.

Ομως σαν να μην εφταναν αυτα, τωρα μαθαινουμε πως εχουμε και "κλεψιμο" α λα Volkswagen gate.

Οταν η Α.Ι. της Tv αντιληφθει πως παιζει διαφορα test patterns οπως π.χ. 1:1 checkerboard, απενεργοποιει το dynamic pixel rendering, για να ανεβασει τα επιπεδα φωτεινοτητας και contrast, που ειχε χασει με αυτη την μεθοδο επεξεργασιας εικονας.
Στην ουσια οσες μετρησεις παιρνουν οι calibrators, αυτες ειναι λαθος, μιας και δεν υπαρχει μεχρι στιγμης κανενας τροπος να ξεγελαστει η Tv και να μην καταλαβει πως τρεχει test patterns.
Ετσι, με τα patterns απενεργοποιειται το dynamic pixel rendering και σε κανονικο υλικο ξανα ενεργοποιειται.

https://www.oled-a.org/are-qleds-competitive-in-the-luxury-tv-market_102819.html

Click to expand...

xavito said:

65"...[lesnumeriques.com]...Samsung QE65Q70RA test...https://www.lesnumeriques.com/tv-televiseur/samsung-qe65q70r-p51159/test.html

μετάφραση google fr to en

As usual at Samsung, it is impossible to disable the dynamic backlight system. The darker the overall picture, the lower the brightness. This translates into a blank at 151 cd / m² on the test pattern containing 35% white and 58 cd / m² on the test pattern containing 1%. The TV shows an average white of 105 cd / m² and a black at 0.02 cd / m².

In addition, the backlight system Full Led composed of 48 areas does not avoid blooming (phenomenon of bright halo around objects on a dark background) which is very present, especially on subtitles.

Click to expand...

Click to expand...

expertreviews: Samsung Q70R review

Nevertheless, Samsung makes the absolute most of that limited number of zones by tailoring the local dimming algorithm to suit, sacrificing shadow detail and dimming brighter objects to maintain deep blacks and reduce blooming or haloing artefacts.

The aggressive local dimming has its downsides: the Q70R isn't the last word when it comes to colour accuracy. It is possible to massage the picture settings to produce a more natural-looking picture, but this is a TV more concerned with visual impact than out and out accuracy

A less pressing problem is that the Q70R exhibits problems with brightness fluctuations in subtitles. In this instance, it’s the small number of FALD zones which are to blame. If you’re addicted to foreign language crime dramas or use subtitles regularly, then it’d be wise to stump up the cash for a high-end QLED. Or consider buying an OLED instead.

Click to expand...

AVforums: Samsung Q70R (QE55Q70R) QLED Review
We did notice the backlight dimming a little more on the Samsung with some delays in brightness changes on screen making the dimming stand out slightly. It was also obvious that the dimming is a little aggressive and can start to crush some areas of shadow detail on screen.

We also noticed this with subtitles within a dark scene so, where we didn’t get issues with over the top blooming thanks to the dimming suppression, it can be seen that shadows are being crushed to compensate. So, no blooming with subtitles, but we do get some black crush as a consequence of this.

Without subtitles on screen and watching the same scenes, the blacks are deep and rich on the Samsung Q70R with a nice dynamic range visible

Click to expand...

Rtings: Samsung Q70/Q70R QLED TV REVIEW

When an object moves fast across the screen, the slower dimming transitions of the Q70R can't keep up, and thus the blacks appear more like gray as the zones stay lit. In our video with the circles, you can see that when one circle vanishes and the next one appears, the zones underneath the old circle remain on for a split second.

Just like with all Samsung TVs that have local dimming, when subtitles appear you might notice distracting brightness changes in the scene.

Unfortunately, you can't disable local dimming through the regular TV menus.

Click to expand...

flatpanelshd Review: Samsung Q70R

Well, first of all it seems that lower peak brightness is partly caused by Samsung trying to balance its dynamic backlight control (and partly due to less capable hardware). The backlight is less agressive so blooming around bright objects in the picture is reduced somewhat. The distracting delay in reaching peak brightness (and dropping to normal levels after reaching peak brightness) has also been reduced although it is definitely still there. We believe that Q70R strikes a better balance, although not ideal as subtitles still introduce visible blooming (also related to the low number of dimming zones).

HDR is clearly less impactful on Q70R compared to some other Samsung LCD TVs. Highlights do not pop the same way and colors that should be very saturated appear less saturated in HDR when watching movies and playing games compared to last year's Samsung TVs. It fares better in predominantly bright and open gaming environments but when games transition into darker scenes Q70R has to make compromises. One example is Xbox game Forza where Q70R produces relatively colorful and bright images when you are driving under the open sky but less convincing picture quality when you enter darker areas (deep forests, tunnels etc) where only part of the sky or small lights illuminate the screen. Having seen so many HDR TVs it is hard to find Q70R's HDR performance

However, our shot of the blooming reveals how the crosses on screen tend to illuminate the full width of the LCD panel due to the limited number of dimming zones.

However, our shot of the blooming reveals how the crosses on screen tend to illuminate the full width of the LCD panel due to the limited number of dimming zones. We observed this effect a few times during use, too.

It is great TV for sports and FIFA but not a great TV for horror movies and dark role-playing games.

Click to expand...