Author Topic: HP 25f Review: Almost-Glossy 75hz IPS with AMD Free-Sync  (Read 196 times)

NCX

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HP 25f Review: Almost-Glossy 75hz IPS with AMD Free-Sync
« on: January 05, 2019, 04:02:17 am »


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2018: HP 25f Review: Almost-Glossy 75hz IPS with AMD Free-Sync: 25er & 25es successor with AMD Free-Sync, native 75hz, the fastest pixel response times, but worse color accuracy than the 25er & 25es, and lower color space coverage than the older models.

2017: HP 24 Envy Review: Semi-Glossy 1080p IPS with 75hz & AMD Free-Sync: The 24 Envy natively supports 75hz (no overclock required), can cover more of the HDTV/REC 709 color space than the 25-27" HP monitors, but is less accurate than the HP 25er and 25es.

2016: HP 25er/es Review: Non-overclock-able 2016 Almost-Glossy/Low Haze Monitors with slightly more accurate color presets, 2x HDMI and 1x VGA.

2015: HP 27CW, 25XW and 27XW Review: Overclock-able 2015 monitors with worse preset color accuracy than the 25er and 25es.

The 25" and 27" HP CW/er/es/XW series monitors all use the same almost-glossy (Low Haze) coating which HP describes as:

"The reflective-ness typical with glossy screen surface is appreciably reduced with the Low Haze Screen enhancement, without losing clarity and contrast of screen imagery."

HP 25-27VX: These monitors use LED PWM Dimming or Flicker which ruins motion clarity and makes some people suffer from health issues like headaches and/or eyestrain. The VX monitors have less vibrant colors since they have a smaller and less accurate color gamut capable of covering up to 92% of the sRGB color space versus the 25-27CW & XW monitors 97%, and use a pure glossy coating while the 25-27 CW & XW monitors use a treated glossy or almost-glossy coating with some ant-reflective properties.


Review Information and Methodology:
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« Last Edit: February 14, 2019, 06:48:05 pm by NCX »

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NCX

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Features & Stand

HP 25f Front by Dr NCX, on Flickr

The HP 25f's casing and stand are an updated, but extremely similar variant of what its predecessors the HP 25CW, 25er, 25es and 25CW used , but the back of the er monitors casing is made of black plastic instead of white plastic like the 25er and 25es.  All of the HP 25-27" IPS monitors casings are made of sturdy plastic, while the easily detach-able "floating," stand is made of metal.  They 25f has the same fake bezel/frame-less design as the older 25-27 monitors which all have an inner black bezel which reduces the perceived black depth, and they have the same amount and type of inputs (2x HDMI & 1x VGA), and silver menu buttons located under the bottom right corner.


HP 25f Back by Dr NCX, on Flickr
« Last Edit: February 15, 2019, 08:37:25 pm by NCX »

NCX

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Part of the HP Family
« Reply #3 on: January 05, 2019, 04:29:08 am »
Menu & Set-Up

DSC_0639 by Dr NCX, on Flickr

Just like the older monitors, the HP 25f needs to have its overdrive setting (Response Time in the Image Control menu) which controls the pixel response times increased since it is preset to the lowest setting by default.  The Response Time setting needs to be set to Level 4 of 5 to provide the fastest overshoot ghosting free pixel response times, which are nearly on par with the fastest 60hz TN panels like the BenQ Zowie RL2460.

The AMD Free-Sync setting, Gaming - Free-Sync, in the Viewing Mode Menu must also be manually activated to enable Free-Sync with compatible AMD graphics cards and the Xbox One X.  The Gaming - Free-Sync setting locks the color (Red, Green and Blue) controls, but not the Brightness and Contrast settings, and it provides the same preset color accuracy as the default setting.
« Last Edit: February 15, 2019, 08:37:31 pm by NCX »

NCX

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Flicker/PWM Dimming

DSC_0655 by Dr NCX, on Flickr
« Last Edit: February 15, 2019, 08:37:41 pm by NCX »

NCX

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Brightness & Contrast

DSC_0668 by Dr NCX, on Flickr

HP 25f B & C by Dr NCX, on Flickr
« Last Edit: February 15, 2019, 08:37:48 pm by NCX »

NCX

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Almost-Glossy/Low Haze Coating
« Last Edit: February 15, 2019, 08:37:55 pm by NCX »

NCX

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Become A Great Fireteam Shooter
« Reply #7 on: February 13, 2019, 04:10:23 pm »
Ghosting/Overdrive Perfomrance

DSC_0693 by Dr NCX, on Flickr
« Last Edit: February 15, 2019, 08:38:09 pm by NCX »

NCX

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Speed: 75hz
« Reply #8 on: February 13, 2019, 04:10:53 pm »
Input Lag

DSC_0671 by Dr NCX, on Flickr

The HP 25f, 24 Envy and 25" & 27" CW/er/es/XW monitors can all be considered delay free (<3ms top screen Leo Bodnar measurement), but this is not surprising since most 1080p monitors are. Usually only multi-input 1440p-4k monitors have a around a frame (16.7ms) or two (33.33ms) of input lag. The Leo Bodnar device measures 9.8ms in the middle of the screen, but the Bodnar device has a built in delay and partially includes the monitors black-to-white pixel response times. Top screen Bodnar results are in the 3ms range, and both monitors tie with my CRT when using the SMT Tool. The actual signal delay (input lag without including the pixel response times) is likely less than a millisecond, but an oscilloscope is required to obtain the "true" value.
« Last Edit: February 15, 2019, 08:38:17 pm by NCX »

NCX

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In Need Of A Mechanic
« Reply #9 on: February 13, 2019, 04:11:26 pm »
Preset Color Accuracy

DSC_0629 by Dr NCX, on Flickr

HP 25f Preset Chart by Dr NCX, on Flickr


HCFR Grey Scale
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HCFR Gamma
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HCFR RGB Levels
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HCFR RGB Color Temperature
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HCFR CIE Diagram
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« Last Edit: February 16, 2019, 12:27:25 am by NCX »

NCX

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Un-Calibrated vs Calibrated

In this post the Free-Sync mode, which in my opinion is the mode important preset-mode, is compared to my calibration which does not apply to the Free-Sync mode which must be selected to activate Free-Sync with the Xbox One and Xbox One X.

HP 25f Free-Sync Preset vs Calibrated 1
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The preset green dominance is quite apparent in this comparison which contains many grey shades.  The grey dominance may seem gross, but it is quite normal for affordable monitors up to 600$ US.
 
HP 25f Free-Sync Preset vs Calibrated 2
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HP 25f Free-Sync Preset vs Calibrated 3
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HP 25f Free-Sync Preset vs Calibrated 4
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The preset green dominance is quite apparent in this comparison which contains many grey shades.  The grey dominance may seem gross, but it is quite normal for affordable monitors up to 600$ US.
« Last Edit: February 15, 2019, 08:38:29 pm by NCX »

NCX

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Not Worthy Of A Spot On The Shelf
« Reply #11 on: February 13, 2019, 04:14:15 pm »
Calibrated Image Quality

DSC_0670 by Dr NCX, on Flickr
« Last Edit: February 15, 2019, 08:38:35 pm by NCX »

NCX

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Viewing Angles

HP 25f VA 3 by Dr NCX, on Flickr

HP 25f VA 1 by Dr NCX, on Flickr
« Last Edit: February 15, 2019, 08:38:42 pm by NCX »

NCX

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AH-IPS Glow

HP 25f VA 2 by Dr NCX, on Flickr
« Last Edit: February 15, 2019, 08:38:52 pm by NCX »

NCX

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Playstation 3 & 4

DSC_0687 by Dr NCX, on Flickr
« Last Edit: February 15, 2019, 08:38:58 pm by NCX »