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(Reviewed) $400 2560x1440 IPS no-AG 90hz+ Achieva Shimian QH270 and Catleap Q270 - Page 386

Poll Results: Vote when your Achieva/Catleap monitor comes in.

 
  • 41% (232)
    Achieva QH270
  • 2% (12)
    Achieva QH270 (DOA / didn't recieve)
  • 8% (46)
    Achieva QH270 (Dead pixel(s) / flawed panel)
  • 40% (224)
    Catleap Q270
  • 1% (8)
    Catleap Q270 (DOA / didn't recieve)
  • 5% (33)
    Catleap Q270 (Dead pixel(s) / flawed panel)
555 Total Votes  
post #3851 of 4784
Quote:
Originally Posted by MrSvahn View Post

I would really appreciate if someone could tell me if there are any big differences between the catleap and the shimian. I am ordering one tonight (within 3 hours) so i really need to know which one to get. I think that the catleap looks better but i've heard that the stand is unstable. :/ Although people say that the shimian is not so very stable either... tongue.gif
Looks, prices.
post #3852 of 4784
Catleaps have tall skinny stands that have stability problems. My Achieva ShiMian is pretty solid.
   
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post #3853 of 4784
Shimian has a much better stand than Catleap, thats pretty much it.
post #3854 of 4784
I've read in this and another thread that the Crossover has the most stable base followed second by the Shimian with the Catleap having the worst. Monoprice sells a number of inexpensive solid mounts and stands (some under $20). You may want to evaluate buying a stand and then buy the cheapest monitor that looks good to you and switch the stands. Then again I've read that removing the built-in stand on some of the Catleap's is an event as the stand is integrated into the monitor and involves opening the unit.
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post #3855 of 4784
Quote:
Originally Posted by BababooeyHTJ View Post

Here is the ICC profile from my Shimian QH270 lite as "calibrated" by my pantone huey. It might not be the best device in the world but its a nice improvement over what I saw out of the box. thumb.gif
Pantone Huey 2 QHD270 0.zip 3k .zip file

Had to post to say thank you. My monitor was very yellow (like a very warm yellow) and this profile has made the world of a difference.
post #3856 of 4784
how do you install that file?
post #3857 of 4784
I ordered a Shimian QH270-Lite from Red Cap, it arrived within a week. I chose Red Cap because it was the cheapest price at the time.

Shipping to Vancouver was via DHL, who charged $41.83 from tax and their fee for collecting tax!

The monitor was valued at $250 - maybe I should have asked it to be valued lower, then taxes wouldn't have been collected, or maybe DHL always stings you for taxes to make their $10 fee.

The Pantone Huey 2 color profile posted gives me an excellent display, the Spyder4express is a bit too yellow/warm for me.

I think I may have to order a 2nd as BYOD (bring your own device) to work. For the price and length of time I spend staring at a monitor over a day I think it may be worth it.

I don't see any dead pixels on the display. It came with a DVI cable, and a power brick labelled as input 230 VAC, with a computer power type plug in input cord with Korean plug. I though I had nothing to lose trying it with a North American power cord at 120 VAC input, and sure enough it is working fine.

The stand is sturdy enough, and there is VESA mounting available on the monitor.

I will probably order the second from Green Sum to see if, as per Rums in Edmonton, it may arrive without any extra fees.

My Radeon 6850 will display BIOS, but I have to turn the monitor on just after I turn on the computer, otherwise I get a very psychedelic color display.

Thought I should post after lurking here for a month and dreaming about these monitors, it is definitely worth the money.
post #3858 of 4784
Can you post the link to the color profile? I want to compare to my profile (created with my DTP94B).
post #3859 of 4784
It definitely seems to be the case that a color profile that works for someone's monitor may not work for someone else's - even if it was made for the same brand. I have a lot of profiles saved that people posted here and in other Korean monitor threads, and some are obviously off, while others are pretty ambiguous, and I am still trying to decide among them. The Pantone Huey profile above looks very red on my Achieva ShiMian. I have a Dell profile that works well, oddly enough, and one made for a Crossover works as well. Some are slightly pink, some are slightly on the green-yellow side, but then there are others that are way off (like the one above). I am starting to believe that there is significant variation between each panel.
   
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post #3860 of 4784
A compilation of calibrated color profiles I have found across Korean monitor threads on overclock.net. There might be more, and I have probably missed them (so many pages to read through!)
Quote:
Originally Posted by BababooeyHTJ View Post

Here is the ICC profile from my Shimian QH270 lite as "calibrated" by my pantone huey. It might not be the best device in the world but its a nice improvement over what I saw out of the box. thumb.gif
Pantone Huey 2 QHD270 0.zip 3k .zip file

Quote:
Originally Posted by ToastyX View Post

Measurements and color information for the catleap:
The brightness ranges from 25 cd/m² to 315 cd/m². There are 30 levels of brightness, and each button press averages around 10 cd/m².
Native contrast is around 1025:1 in the middle of the screen. Calibration will bring that down to around 875:1 or higher, depending on the white point.
Native gamma is actually pretty close to 2.2 out of the box.
The native white point is too green, and the brightest white has a different hue from the rest of the grayscale. This is not unusual for LG IPS panels, but most IPS monitors with color controls have the default contrast set one or two notches below the brightest white to avoid this. Since this monitor has no color controls, it just shows the panel's native output. In my experience, the white point being too green is also common with LG IPS panels, but this can vary from panel to panel. These are the main reasons why it looks "off" to me out of the box. With calibration, it looks great.
Several points I should add, colorimeters are not totally accurate with white point measurements, and measurements can drift with age, so results can vary from unit to unit and between different colorimeters. The results can also vary on different parts of the screen since most monitors are not perfectly uniform. My particular panel is slightly redder at the top edge and slightly yellower at the bottom edge, but most of the middle is consistent. Colorimeters also need different filters for different backlights (especially for wider gamuts), so that also affects accuracy. This monitor's gamut is close to sRGB, so that's not a major problem.
I have three colorimeters:
Retail Eye-One Display 2 (oldest)
SpectraView-branded Eye-One Display 2
ColorEyes-branded XRite DTP94B
The SpectraView Eye-One Display 2 was unusable on this monitor. I don't know if this colorimeter is failing or if it just has different filters for wider gamut monitors, but it wanted to add way too much red.
The retail Eye-One Display 2 and the DTP94B were pretty close to each other. Both removed a lot of green along with some red, with the DTP94 leaving slightly more green. I always preferred the Eye-One Display 2 over the DTP94B because the DTP94B always left a little more green than I liked. The retail Eye-One's result looks more natural to me, but I have no way of knowing for sure which one is more accurate without a spectrophotometer.
Another problem I should mention is the Eye-One Display 2's brightness measurement drifts downwards when it gets warmer. The DTP94B doesn't have that problem, so I did the brightness measurements with the DTP94B. Black point measurements are also hard for colorimeters, so it's hard to get exact contrast values. The DTP94 only reports to two decimal places.
I don't usually like to post color profiles since colors can vary from unit to unit, but since this monitor benefits greatly from white point calibration and the gamma doesn't change much, I will include three profiles here (all gamma 2.2):
catleap-6500k.icm - This is the one produced by the retail Eye-One Display 2. Contrast is around 875:1.
catleap-d65.icm - This is the one produced by the DTP94. This one has slightly more green. Contrast is around 900:1.
*** Edit: I just noticed the Eye-One's profile makes blues purplish in color-managed programs, so the DTP94 (D65) profile is probably the better one to use. ***
To get 115-120 cd/m² with those profiles, use 10 button presses up from the lowest brightness.
catleap-native.icm - This one keeps the native white point while adjusting the rest of the grayscale to match. Since the white point can vary from unit to unit, use this if the other two profiles look strange to you. This one preserves the native contrast ratio.
To get 115 cd/m² with this profile, use 8 button presses up from the lowest brightness.
I also need to write up how to load these profiles. ATI/AMD GPUs are capable of displaying 8-bit color from a 10-bit LUT with dithering just like professional LCD monitors do, which allows you to calibrate without getting banding, but you'll need a third-party LUT loader because the LUT loader in Windows only supports 8-bit values. I don't know of a way to enable dithering with NVIDIA cards in Windows, so NVIDIA users will get some banding when using a color profile. Mac OS X enables dithering for both ATI/AMD and NVIDIA GPUs, so gradients should always be smooth there.
That leaves me with a conundrum:
ATI/AMD: no banding with calibration, but can only get 85 Hz
NVIDIA: banding with calibration, but can get 100 Hz
I wish there was some way to get one or the other to do both.
Quote:
Originally Posted by 996gt2 View Post

Here is the ICC profile for my PB2700 Super, calibrated with an X-Rite Eye-One Display 2 set to 6500K, Gamma 2.2:
http://dl.dropbox.com/u/25994702/PB2700Super_6500K_2_2Gamma.icc
Quote:
Originally Posted by Open1Your1Eyes0 View Post

Hey guys,

Here's a profile I created with my own i1 Display calibration tool (on the Super version): Link Here

Colors are absolutely perfect on this and this one should not appear red for you guys like the previous one. smile.gif

Monitor_4-23-2012_3.zip 4k .zip file
Quote:
Originally Posted by MenacingTuba View Post

It definitely looks like yours also suffers from a a strong blue dominance out-of the box. I'm looking at the Norway image on my calibrated 850D and your Crossover looks much better with the ICC profile.
@ Every one else, if you know how to use a camera I recommend trying the ICC profile and taking a before/after image of the Norway wallpaper.
http://wallpaperswide.com/norway_2-wallpapers.html
Here is the profile
http://www.tftcentral.co.uk/icc_profiles/crossover_27q_led-p.icm
No harm in trying it, especially if you end up with better picture quality.
Quote:
Originally Posted by ftwo View Post

I'm not able to test a game console or component input, but I did test HDMI from the PC - no issues. Also, I just connected the DisplayPort and am running full resolution now.
The color profile is attached. CrossOver-2720mdp_05-08-2012.zip 4k .zip file
   
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Achieva ShiMian 27" IPSB (tempered glass) Ducky Shine II MX Clears Corsair AX750 BitFenix Survivor in White 
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Logitech MX518 Ikea circle! NZXT Hue Lamptron FC-9 
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i7 3770 @ 4.3 GHz ASRock Z77E-ITX GTX 660 Ti + Accelero Mono Plus, 1.875V G.Skill Ripjaws X 16GB at 2133MHz 9-10-11-28-1T... 
Hard DriveHard DriveHard DriveCooling
Crucial m4 Hitachi TravelStar 2.5" SATA III Intel 330  BitFenix Recon fan controller 
CoolingCoolingCoolingCooling
Corsair H100i Scythe Gentle Typhoon AP-14 x 4 (radiator front... Phanteks 140mm fan (exhaust) Fractal Design R2 Silent 140mm fan (bottom intake) 
OSOSOSMonitor
Windows 7 Professional 64-bit Windows 8 Professional 64-bit (trying it out) Linux Mint Achieva ShiMian 27" IPSB (tempered glass) 
MonitorKeyboardPowerCase
Dell U2412M 24" LZ-GH aluminum/steel TKL keyboard Seasonic G-550 80+ Gold Fractal Design Define R4 
MouseMouse PadOtherOther
Logitech MX518 Monoprice dual-surface aluminum IKEA Dioder light-changing LED strip on the roof Monoprice 10 x 6.25" drawing tablet 
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Intel i5 2400 3.8GHz turbo boost Gigabyte z68x-ud3h-b3 Sapphire Dual-X 7970 OC Samsung 30nm ULP  
Hard DriveOptical DriveCoolingCooling
Corsair Force 3 LG DVD-RW Zalman CNPS9900MAX-B Noctua NF-S12B ULN 
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Scythe Gentle Typhoon AP-14 Fractal Design R2 Silent 140mm fan Bitfenix Spectre 200mm fan Windows 7 Professional 64-bit 
MonitorKeyboardPowerCase
Achieva ShiMian 27" IPSB (tempered glass) Ducky Shine II MX Clears Corsair AX750 BitFenix Survivor in White 
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Logitech MX518 Ikea circle! NZXT Hue Lamptron FC-9 
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Overclock.net › Forums › Components › Monitors and Displays › (Reviewed) $400 2560x1440 IPS no-AG 90hz+ Achieva Shimian QH270 and Catleap Q270