You can help fund Techmoan with a donation

Click to visit  

SEARCH BOX: Searches this website


For more info on this - click on "About' at the top of the page. 


Techmoan never approaches a company asking for review samples.



Articles by Category


Techmoan Merchandise at TeeSpring


Pick of the Camera Reviews

(Click the pictures for reviews & links) 


Yi 2 - Best Budget 4K 

Gitup Git2 (My Pick)

Xiaomi Yi


DR02 D - Best Budget Dual Cam

Yi Ultra 2.7K
Mobius (also works as a Dashcam)
Polaroid Cube+
Drift Ghost X

My favourite USB battery power Pack

This is the excellent USB power pack I use when I travel.

2 x 2.1amp outputs. 8400mAh capacity.

Two digit Led display shows battery level


What SD CARD should I buy?

If you want an SD Card for your camera - these are the ones I use and recommend. 

I'd strongly recommend not to buy any SD cards off ebay - I've heard about too many issues with counterfeit cards - often sold on by unwitting resellers. My inbox regularly gets messages from people who bought a £150 camera then cheaped out and bought a £3 memory card on ebay - Then when it doesn't worth they blame the camera! It doesn't make any sense. Good memory is cheaper than it's ever been - see the links above.

A lot of HD cameras will not work properly with cards larger than 32GB (cards over 32GB are usually SDXC rather than the SDHC standard used by 32GB cards. SDXC cards use the ex-FAT system rather than FAT32 - in short they are a different standard). - so don't just buy the biggest card you can afford - read the specs in the manual to see what it accepts.


RECOMMENDED CARDS (for action cams - see dashcams below)

CLASS 10 UHS-1 CARDS (For HD Cameras)


U3 CARD (For 4K cameras)




The SD card in a dashcam is re-written over, more frequently than in other types of cameras. Some manufacturers void their guarantee if an SD card was used in a dashcam. So, no surprise, there are special High Endurance SD cards made just for's some.


VERY IMPORTANT. These links take you to the product, however Amazon have three different ways of selling. There's Amazon Direct - This means that you are only dealing with Amazon themselves, then there's other sellers that use Amazon's facilities - these show as Fulfilled By Amazon and finally there's Market Place sellers that advertise on Amazon, but operate independently.  I strongly recommend that you only use the first...the Amazon Direct - Sold By Amazon option. Even if it appears that you are paying a couple of £/$ more it is more than likely you are comparing the price of a real item against the price of a fake.

To give you an idea of the extent of the fake goods problem. In a 2016 survey by Apple - 90% of the 'Apple' chargers sold through Amazon - using the other the two methods..which includes the "Fulfilled by Amazon" option -  were found to be counterfeit....90%! 

« Gramovox Vertical Record Player Review | Main | Retro-tech. That time when HD came on VHS »

VCD vs UHD and what's the big deal with UHD anyway

First a (ludricrous) 'competition' between the oldest and the newest video formats on which you can buy current releases. It's VCD vs UHD Blu-ray

Secondly if you think the new UHD Blu-ray format and UHD TV's are all about the resolution....think again.


VCDs were purchased from YesAsia 



EmailEmail Article to Friend

Reader Comments (4)

Very very interesting that Blu-ray vs UHD, Matt. And a lot of fun that direct comparison VCD vs UHD. I guess many people won't enjoy it but I like a lot that kind of extreme comparison between older technologies and modern ones.
I did some in the walkman/audio world and plan to do a few more yet. Love them.

Regarding the HDR, It's something I really want to see in person in TVs. Actually the contrasto ratio isn't much higher than 1000:1 in the best cases, with IPS panel. The only way to achieve much more is using local dimming or maybe with OLED (yet to see the first TV or monitor). I think local dimming is the key because it solves the main problem of LCD panels: the low density blacks.
So I guess for a TV to show the HDR logo is simple: it has to feature local dimming.

But there's another thing you didn't mention: UHD standard is suposed to be use the Rec2020 color space, rather than the Rec709 used in HD. The problem is that there's no Rec2020 screen actually on earth, as far as I know, at least for consumers. So videos are supposed to be rendered to a color space so big that no screen actually has -> causing the colors to fade down.
The highest gamut now is Adobe 98/DCI-P3 which is pretty wide but still much smaller than Rec2020.

Well, we will see in the near future...

Anyway, thanks for reading; that's it for the moment ;-)


May 1, 2016 | Unregistered CommenterHugo


Longtime fan here... just thought I'd make you aware your video is the subject of an io9/gizmodo article. Your video is embedded but there is no attribution. Might want to send them a message. Here's the link-


May 3, 2016 | Unregistered CommenterKevin

Lots of confusion on that website. I think you are saying that where the UHD looks pink to us, it doesn't on Mat's screen. So the colour timing is the same. So can you describe the difference you see in the colours and why uhd looks better (disregarding HDR atm)?

May 6, 2016 | Unregistered Commenteral

A well mastered VCD is not so bad compared to an old worn VHS tape from a video rental shop or bought one watched a few times or aged a few years. Sure the vertical resolution is only half the lines and there might be blocks, but it always depends on the encoding (which sadly only reached the best quality with software encoders around the year 2000 after dvds came onto the market). There is no video noise, no color shifting/bleeding, the audio is better (unless vhs hifi was used).

Back then technical feat, the reduction. was awesome. For example for 24fps NTSC: 1150kbit + 224kbit = 172'000 bytes per second for video + audio from originally 352*240*1.5*24 + 44100*4 = 3'217'680 bytes per second = ~1/19th or down to 5.3%.
For 30fps NTSC and 25fps PAL the reduction is even greater and so are the artefacts that become visible.

I uploaded the original san andreas mp4 trailer from youtube and a 16:9 and 4:3 encode made with tmpeg.
The video has been sharpened while resizing, looks better, compresses with more artefacts. The colors look great.

Now if one remembers typical TV set sizes back in the day I believe it was still a good format for the technical limitations back then.

June 13, 2016 | Unregistered Commenterbastel

PostPost a New Comment

Enter your information below to add a new comment.
Author Email (optional):
Author URL (optional):
Some HTML allowed: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <code> <em> <i> <strike> <strong>