Tuesday, 18 February 2014

EVO 3D different camera modules

Both taken from EVO3Ds one on left is international, the right is a Rogers.
I gathered that HTC originally included twin 5MP sensor cameras in the EVO3D when it was first released. Wow... Twin 5MP 3D camera on a smartphone. That is some clever marketing. If you read the details though, the 5MP sensor was only ever fully exploited for 2D photos. The HTC's included camera app limited it's 3D photo captures to just 2MP 16:9 ratio at 1920x1080 resolution. Which on paper is fair enough, matches the 1080p HD TV standard. Video recording resolution for both 2D and 3D , is maxed out at 16:9 ratio at 1280x720 720p. Since the second rear facing camera sensor was only ever engaged for much lower resolution 3D photo and video capture, the EVO3D would practically never get to use most of the available 5MP. Such a waste... So did HTC release a wonderful new firmware to unlock full 5MP 3D photo and 1080p 3D video capture? No. From an unspecified date, they instead took the opportunity to out a cost effective hardware revision that quietly substituted that one underused 5MP sensor with a lesser 2MP sensor instead. Although the packaging won't indicate it... If you have a unit that rolled off the factory floor late in the EVO3Ds production run, there is a good chance you have a 5MP+2MP version. Looking at the phone settings you'd be forgiven for thinking it was still 2 x 5MP too, and functionally, most people probably won't ever noticed the switch. But knowing it bugs me... Dredging the internet, I'd found some folks on XDA forum had a made public an interesting tweaked Amaze camera app for Gingerbread EVO3Ds that would boost the 3D photo to 3MP 4:3 2048x1152. Still not the full 5MP but I'll take it. The app also has options to boost the bitrate of the 3D 720p video recordings up to an impressive 20MBs. Which should mean nicer looking video output. The app has 2 builds: if the 2048x1152 version crashes, it is indicative that your Evo3D has a 2MP second sensor. So this was one way to tell if an EVO3D is an early 2x5MP model or not. Unfortunately, the Amaze canera app only works for Gingerbread. The Evo3D I had was already on ICS, and sure enough, the tweaked camera app would force close every time I tried to open it. I had no way to tell if my EVO3D had 2x5MP rear facing camera. 

I only recently aquired a second EVO3D and was delighted to noticed some differences between them. 
A) X515m is on stock ICS made in Taiwan, red trim around rear facing camera  
B) X515a Rogers is on stock Gingerbread made in China, gold trim back

Inspecting the rear facing cameras, even without removing the back cover, I saw that the Rogers version has more recessed lenses vs the International version. I then proceeded to take them both apart to get a better view of the camera modules themselves. The one on the right with the impressive solid cast metal brace is quite possibly a latter 5+2MP module, it makes perfect sense as a logical enhancement. That once set in place, the sensors should be held securely positioned and well protected from potential shocks that may knock the 2 lenses out of alignment and cause less than optimal 3D capture. I'm hoping the less robust looking module that lacks such reinforcement on the left is perhaps indicative of an older version,but hopefully has a better chance of housing twin 5MP cameras.
The 2 modules have physical connections looking much the same and might be directly interchangeable. We shall see. Testing the Rogers with the tweaked camera app, it could only run the 1920x 1080 version, so it seems to be a 5+2MP module. Want to know more? I just found this article in XDA and worth a read http://forum.xda-developers.com/showthread.php?t=1646832

Monday, 17 February 2014

Spot the difference

The 1st image is taken from the eBay Posting. Seller name is deliberately cropped for now. I have saved screenshots.

Here is what I actually received. 
It may still be a usb smart phone dock but pictorially it bears no resemblance to the deceptive image that was used in the original eBay listing. I will be demanding a full refund and return.


Thursday, 6 February 2014

M709 Native 3D apps integration

3 x pre-installed apps focussing on 3D
3DP View, a 3D photo viewer
3DV Player, a 3D video player
3DV Games Centre, a store front for free games that support the M709's 3D screen

3D, ver 1.3 a 3D photo viewer
Supports playback of locally stored MPO and JPS format 3D images.

Every time opening the app, we are first presented with a web hosted gallery of 3D images. I haven't figured out which sites they are specifically pointing to. The main menu to the left has English titled tabs, but the image sub categories have thumbnails with Chinese text. The resolution of the 3D sample images is quite variable, some are looking very low resolution at significantly less than 720p. Upon tapping on the desired thumbnails, files are downloaded from the internet into a temp directory, which I notice are in JPS format and commonly the vertical resolution is just 540 pixels (QHD), which is fine for lesser 3D screens, but is not enough to show of the M709 800p 3D to it's full potential. I don't know how often the web samples in this gallery will be updated, but in the 2 weeks I've spent with this app, the images have not changed. I doubt very much that I will be returning regularly to check for new images posted here. Nor can I find a way to post my own 3D pics to share with others via this app. I wish there were a way to hide away the web gallery tabs altogether. Last but by no means least, the "Local Image" tab lets you browse 3D photos stored locally. The "scan path" is easily customisable to point to the internal storage, a mounted micro SD card or an OTG mounted storage device. "Local Image" is easily the most useful part of the app and I wish it was configurable to be the default when starting the app. You are able to browse 2D thumbnails of the MPO an JPS files on your tablet, then load the file you want to see. The image will initially be displayed in 2D by default. A large bright blue label at the bottom center of the screen indicating the current display mode is "2D". Tap on it, or the soft menu key to switch view to "3D" engaging the parallax barrier. The superfluous 2D/3D indicator is thankfully automatically hidden after 3 seconds. I notice this app did not boost the brightness when switching to 3D mode so you may want to l do that in advance yourself as full brightness helps compensate for the activated parallax barier that blocks out some light. There are also < and > signs left and right on screen allowing for navigation to the next or previous image in the gallery sequence. A finger swipe across the screen in either direction performs the same operation. That's all there is to the UI no slideshow options to speak of. I updated to the latest version 1.32 from within the app (menu key>about>version info>update) but could not see any notable differences afterwards.

Observed that the Android black bar soft key menu at the bottom of the screen does not hide itself when viewing images. While this might be fine for 16x9 images (since the screen's native resolution gives enough space to accommodate, it is a criminal waste of vertical screen space when displaying 4x3 images.

3DV Player, a 3D video player
Supports playback of locally stored mp4 SBS half width 1080p 3D video

3DV Games Centre, a store front of free games that support the M709's 3D screen
Mostly casual games such as 3D Darts. Surprisingly, there is a licensed Disney Toy Story game called "Smash It".
Real Steel boxing is another title I'd heard of before. in both cases, I doubt the developers wrote code to specifically support 3Dscreens. Indeed, the same titles if downloaded from the Google PlayStore are missing the 3D display support. I am not so familiar with the numerous other titles on offer.
Nothing from big developers such as Electronic Arts nor Game Loft. Once installed, these 3D games launch with an added "3D" cog button at the top left of the screen. Tap it to extend a slider bar to set the desired 3D depth. From all the way left to turn off the parallax barrier (ie just plain 2D). Slide to the far right for the maximum 3D depth setting. It works well for the games they've chosen! A genuine sense if depth is seen for the rendered 3D polygons and screen elements such as health bars in Real Steel float as a layer separately from the background action. This is like LG's 3D app converter that came with their Optimus 3D phones, only with less options.

Megafeis M709 3D tablet, 3rd party app support

The following apps are available from the Google Play store.

YouTube: ver 5.3.32 A massive ever growing worldwide resource of 3D video content shared freely online. Indispensibly, users can upload and build their own personal repository of 3D videos that is then easily accessed by any bigger screened 3D smart connected TV. However, after installing the current version of the official app from the Play Store it became disappointingly clear that 3D videos simply would not trigger the M709's 3D screen, and instead played them in the plain SBS format.

Phereo: ver 1.8 a very useful app for 3D photo sharing for free! Again users can build their own personal repository of 3D photos and review them from any web browser with user selectable anaglyph, wiggle, free view or plain 2D. Crucially, it supports many glasses free Android devices with parallax barrier screens. Disappointingly, with the M709, when attempting to change the 3D view mode from within the Phereo settings to "native 3D", we are presented with a pop-up exclaiming "you device does not support this mode."

3D Steroid and 3D SteroidPro: ver 3.04 browse and uniquely to re-edit locally stored 3D photos with support for many glasses free Android devices equipped with parallax barrier screens. Not the M709 though...

Tobidale 3D: ver 4.1.1 browse and uniquely zoom into locally stored 3D photos with support for many glasses free Android devices equipped with parallax barrier screens. Not the M709.

Stereoscope: https://play.google.com/store/apps/details?id=fr.stereoscopie.stereoscope

browse locally stored 3D photos and a selection of 3D Web galleries with support for many glasses free Android devices equipped with parallax barrier screens. The M709 could display 3D images if the barrier is stuck in 3D mode. I managed this by playing a 3D video with 3DV Player and switching apps. Set the Stereoscopic mode to vertically interlaced. A clumsy kludge for sure and I count this as a fail too.

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