Friday, February 10, 2012

Use an iPad as field monitor with your DSLR

(Dutch below/Nederlands hieronder)A colleague of mine asked whether i knew of a solution so his wife, a photographer, could use her iPad to live preview anything she shoots with her photo camera (i understand this is called a 'field monitor' function), in her case a Nikon 7D/7000. It would need to be VERY easy: she would take a picture on/with her HDSLR and the picture should automagically transfer effortlessly to the iPad for viewing.

I searched the internet and found the following:
  • eventually i found the Eye-Fi. According to the info on this page, it would be as simple as using this wifi enabled SD memory card in your camera, take a picture and it would transmit to your tablet (or any WiFi equipped device for that matter). This video shows how it works:
  • before finding out Eye-Fi in 2011 released a card that could connect to WiFi-devices directly, i read about this solution where a guy uses a portable router to create a WiFi network in the field:
  • there is a professional grade solution in the form of the Teradek Cube
  • while searching i read about DSLR-controller. At the time of writing this does not work with an iPad though. But for Android users (tablets and smartphones) DSLR-controller might be worth looking at
  • during the CES 2012 Toshiba announced it would start selling a two way WiFi SD card based on the SDIO spec. Whether that would deliver similar functionality as the latest Eye-Fi, i do not know
  • the Nikon D4 officially supports the iPad as field monitor and remote control, HTML based
  • a less wireless and more manual solution is by using the Apple Camera Connection Kit as described in this article.
  • And there are plenty solutions where you use a computer in between your camera and a tablet, like this video shows
So no need for HDMI to USB convertors: it looks the Eye-Fi would do what my colleague wants. Since i don't want to spend the money and don't have the need myself, i can't tell from my own experience this works, but the info seems credible.

Dutch/Nederlands: Een collega vroeg me of er een oplossing was om de iPad te gebruiken als scherm in combinatie met een digitaal fototoestel zoals een Nikon; dan kun je op een groter scherm je foto beoordelen, was de bedoeling

Ik zocht, en de mooiste oplossing die ik vond is waarbij je gebruik maakt van Eye-Fi-kaartje (dat is een SD-opslag-met-Wifi-mogelijkheid). Een filmpje:



En hier meer info. Ik vond ook nog andere oplossingen, ook voor Android: de links naar die info vind je in de engelstalige tekst hierboven :-).

Saturday, February 04, 2012

Toekomst met aanraak-gevoelig glas?

Mooi filmpje over wat we de komende jaren wellicht meer en meer kunnen gaan doen met aanraak-gevoelig (touch sensitive) glas (en computers)

Dan zijn er mensen die dat niet zien gebeuren, maar die moeten dan vooral even dit filmpje kijken :-):

Bron en meer filmpjes: xyofeinstein blog.

Friday, January 06, 2012

Mac OSX Lion re-install



My (2011) Macbook Pro which i upgraded to Lion suffered from the spinning colored beach ball (so you can't do anything and have to wait for the Mac to become responsive again). I searched around the Net, checked/fixed permissions, tried to get rid of programs i did not use anymore, but nothing worked, the spinning colour beach ball still happened way to much (and seemed to be related to disk activity spikes). So i thought i might be because i did an OS upgrade instead of a fresh install.

I tried to resize my HDD partition, that took all the disc. But resizing was impossible; it was greyed out. I tried Diesk Utility and Drive Genius without luck. Stellar Toolbox offered me a change to resize though. But it advised it needed to defragment first. So i agreed, and waited... The progress bar moved about 5% and than it stopped, for hours.

Stellar gave me no option to stop defragmentation... What to do? I know it is dangerous to power-quit such a process. But hey: nothing seemed to happen. So i hard-powered off the Mac. Powered it back on ... But got a grey stop sign. Uh-oh. I found you can get into restore/recovery mode by pressing Command-R while booting. I tried the Disk Utility: no luck. So i reinstalled Lion. This would give me a fresh install, so at least i would know for sure if my upgrade was to blame for the beach ball.

Did i already say i only backuped my most important files? In the hope i would not screw up the resize of the partition? So i lost all the less important data. You do make backups, right ;-)?

But now i had my music and pictures on my iPhone, but not anywhere else. Well, just sync, right? Wrong! iTunes only syncs what you bought through iTunes. I searched around a lot, and (free) Senuti helped me get my music from my iPhone and copy it to iTunes.

So now my pictures. Lots of people will say Preview will let you import pictures from your iPhone. Yeah, right, just the ones that did not get imported earlier. What happens is that your iPhone stores the pictures that got imported earlier in a special folder on the iPhone! And no utility i found, not even iPhoto, will offer to resync the pictures again?!? What i ended up with is use iExplorer to browse my iPhone and find folder /private/var/mobile/Media/PhotoData/Sync/100SYNCD ... So i copied all files from that folder to my desktop and imported the pictures into iPhoto. Now i can sync without loosing the stuff on the iPhone (well, it removes the pictures on the iPhone, but than copies the ones back i put in iPhoto).

I lost all my playlists and albums using this, but after some heavy searching this was the only way i could at least preserve my data (music and photos).

Well, thank you SO much Apple in making this so difficult. AND for giving me this beach ball, which i still see after a fresh Lion install on my Macbook. Together with the resets-during-calls of my 3GS i have pretty much had it with Apple. They better come up with fixes soon :-( .

I'm currently looking at the DTrace tools to see whether i can use them to get a better understanding of the IO spikes i see when my macbook freezes with the rainbow spinning ball. Another helpfull command i'm using is: open Terminal and type sudo fs_usage -w > ~/Desktop/usage.txt . This will write filesystem operations to a text file. Analyzing the huge amount of output is a challenge, but because i think there is a relation with IO, i need to investigate it. I also searched for the latest driver for my mobile USB modem, just in case that might somehow interfere with IO.

Friday, November 25, 2011

iPhone 3GS randomly reboots during call - solutions

I guess now more and more people get to use more Apple products, we get to see it might be user friendly, but it isn't perfect ;-). My iPhone 3GS, which i have for 3 years now, has it's share of random reboots during calls. The problem has come and go, but today it returned again, 3 times within an hour, after having shown it's ugly head some more the last couple of days. So i started looking again whether smart people found a solution.

I found info to replace /System/Library/SystemConfiguration/mobilewatchdog.bundle/ with "mobilewatchdog" from iOS 3.1.2 (you can use iExplore to navigate to the iPhone).

But that seems to only work on iOS 4. Since i have iOS 5, i searched some more and found this solution where /System/Library/Watchdog/MemoryMonitor.bundle is deleted and mobilewatchdog is copied in.

Update: Since the problem occurs a little random, i don't know how soon i will know whether it works or not :-). But i already had 2 new reboots after doing the above :-). So i think this did not work for me :-). I did a 'install as new iPhone' after which i restored the backup of my iPhone, but within a day, it started rebooting again :-(. So since Dec 30th i did a 'install as new iPhone' again, but without restoring the backup, installing only the apps i REALLY want, and see how that works... As i'm writing this i've already been withour reboots for a couple of days...

Update: decided to try and downgrade to 4.3.5 and see whether the mentioned edit of the mobileWatchDog will prevent my 3GS from rebooting by itself. Found i needed this to edit the hosts-file (as Apple does not allow downgrading) and will try this to still be connected to the devices in my family that are synching with iCloud.
Update: after restore the iPhone would not connect to the network anymore. Tried everything, carrier fix, new carrier settings, new unlock through iTunes ... Nothing. Really love Apple more and more. So back to iOS 5 so i can at least call.

After all the 'install as new' and new jailbreaking, i had problems with iMessage: that would not deliver the messages anymore. Also, i would not get WhatsApp push messages. Found this page, and SAM/SAMPrefs solved that problem!

I have now used the delete-all-email-accounts-and-add-them-again-trick: after that i haven't had (m)any reboots, yet.

Imagesource: sudgaurav's blog.

Tuesday, November 08, 2011

Lie To Me tests

Somebody recently pointed me to the Lie To Me series, which i have since started watching. And i guess many that did watch that series, wondered how they could improve their skills in detecting lies.

The theory used in the series, about micro expressions, was developed by Dr Paul Ekman. A nice page with some links can be found here. Dr Ekman has a website and is selling tests.

I have searched for free online micro expression tests and facial expression tests, and found the following (please leave a reply to this blogpost if you know of other tests):

- a test at Berkeleys Greater Goods

- cio magazine put a test online (press a number, watch the brief micro-expression and match the corresponding word)

- 'Dr Lightman' has his own test online

- as part of their iPhone app, Global Emotion has put a part of its content online for free

- BBC has a test of smiles

- Explore-At-Bristol ("one of the UK's most exciting hands-on science centres") has a test online

Dutch: veel mensen die de serie Lie To Me hebben gezien, zullen zich afgevraagd hebben hoe ze hun vaardigheden kunnen verbeteren om leugens (of in het algemeen gezichts-uitdrukkingen) beter te kunnen 'lezen'. De bovenstaande gratis online tests zijn in ieder geval leuke korte oefeningen. Een leuke aanvulling is wellicht deze test waarin je moet proberen leugens te ontmaskeren.

In Belgie heeft iemand zijn eigen Micro Expression opleiding opgezet.

Saturday, November 05, 2011

Internetfilters

Voor de sessies over kinderen en internet (ouderavonden etc) die ik voor Mijn Kind Online soms verzorg, houd ik ook altijd een rijtje programma's achter de hand op gebied van filteren van internet, omdat zeker opvoeders van kinderen tot een jaar of 11 a 12 daar weleens naar vragen. Maar heel eenvoudig vind je zulke software niet bij elkaar, dus het is elke keer zoeken op internet.

Daarom hierbij een lijstje met software voor als je kinderen thuis of op school veilig wil laten internetten:

Gratis: Niet gratis:
  • In 2010 deed ComputerTotaal nog een test van software voor ouderlijk toezicht. Daarin bespreekt met Benzoy, CyberPatrol, Net Nanny, MyBee, Norton Online Family, PC Pandora, VISE oudercontrole (de door-ontwikkeling daarvan is eind2010 gestopt), Windows Live Family Safety, YourSafetyNet Home Edition en K9 Web Protection
  • KlikSafe
  • SolCon
  • YourSafetyNet
  • SiteBlocker
  • SoftwareTime
  • TopTenReviews heeft een lijst met filtersoftware speciaal voor smartphones en hoe elke oplossing scoort. In die lijst PhoneSheriff, MobiStealth, My Mobile Watchdog, Mobile Spy, EverStealth, WebWatcher Mobile, eBlaster Mobile, SpyBubble en FlexiSpy. Ik ben wel benieuwd hoe onafhankelijk de tests zijn bij TopTenReviews. Maar het is in ieder geval een handig lijstje oplossingen op dit gebied ;-).
  • TopTenReviews heeft ook een lijst met 'parental software'. Daar heeft men WebWatcher, Profil Parental Filter, NetNanny, Spytech SpyAgent, Spector Pro, eBlaster, PC Pandora Pro, Elite Keylogger, Cybersitter en IamBigBrother naast elkaar gezet.
  • TopTenReviews heeft ook een lijst met 'internet filter software'. Daar heeft men NetNanny, PureSight, CyberSitter, Profil Parental Filter 2, Safe Eyes, CyberPatrol, McAfee Family Protection en imView naast elkaar gezet.
Daarnaast is het afhankelijk van je situatie, goed om te kijken welke maatregelen nodig zijn voor mobiele telefoons, tablets zoals iPads etc. Als je kind daar gebruik van maakt kunnen ze, zelfs als ze klein zijn, al veel kosten maken zonder dat ze dat willen. Naast allerlei instellingen is het ook nuttig om regelmatig updates te doen (waarmee vaak 'gaten' in de beveiliging worden opgelost) en een firewall te installeren. Daarmee voorkom je dat via een ongelukkige klik of onbedoeld via een kwaadaardige site 'rotzooi' op je computer de kans krijgt. Voor Windows vind je op dat gebied op deze pagina veel informatie bij elkaar.

Ook handig is de gratis Waarschuwingsdienst van de overheid: daar kun je opgeven op welke manier je een seintje wil (oa een (gratis) SMS) als er nieuwe gaten in software is ontdekt, en wanneer een gat is gedicht (update-tijd!).

En kijk evt ook naar het SMSDienstenFilter om SMSd-diensten te blokkeren.

Ondertussen zijn er ook op dit vlak continu ontwikkelingen, nieuwe afspraken, nieuwe wetten/regels etc, dus dit is een momentopname. En heeft u tips of opmerkingen? Reageer dan even op deze blogpost!

Afbeeldingsbron: BehindTheNews.

Wednesday, November 02, 2011

Film of game?

Wat zou er gebeuren als je iemand uit 1990 dit laat zien? Errruugg fraai, die trailer voor Grand Theft Auto 5...