Look at this incredibly wonderful video of a toy railroad that has been constructed with superconducting materials to a maglev rail road…
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How to calibrate the HTC Magic compass
If you have like me used the HTC Magic built-in magnetic compass for a while you might have noticed that it is not always properly aligned. Here is a procedure to re-calibrate the compass and accelerometers in the mobile so that it should give you pretty accurate readings once more:
The calibration of the compass and accelerometers should now be pretty good. If at any time you feel the compass is not showing you the right direction or seems ”stuck” even if you are turning, then repeat this calibration and it will come alive again. Certain applications such as the metal detector application may also screw the calibration and you might need to repeat this after using such software. |
Om du som jag har använt dig av HTC Magics inbyggda kompass ett tag så har du kanske märkt att den inte alltid visar så rätt. Här nedan följer en procedur hur man kan få den kalibrerad enkelt och visa rätt igen:
Accelerometrarna i telefonen skall nu ha hittat sin jämvikt och kompassen bör stämma relativt väl. Du behöver göra om denna kalibrering ca 1 gång om dagen i normalfallet. |
HTC Magic
What I have used before…
So this is my new friend and toy. I have previously been an Ericsson fan until they released the ridiculous K600i telephone and then I switched to Nokia N95 for a short while and I detested the Symbian OS completely. So then I tried a Windows Mobile based HTC the Dual Touch model and my current work provides me with a HTC S740 which is also a windows mobile but with some nice features like GPS and so on. Last thursday however I went and bought myself the first big Android phone released in Sweden, the HTC Magic through the operator 3.
Just WOW!
I can honestly tell you that this mobile has become one of the best gadgets and most useful tools I have ever possessed and in a very nice package. The mobile looks a little bit like an iPhone, slightly smaller display area and with a few more buttons on the front side. However when it is started it is obvious that it har borrowed even more from the iPhone in terms of the interface but also it is far from the special locked down feeling that I get from all Apple’s stuff.
Connector
First of all the multiconnector contact on the phone is a slightly modified USB connector. The modification is only there so that you won’t insert audio connectors into a normal USB but they will fit your phone. However normal USB cables will fit the phone so you can connect it to any laptop or desktop PC or mac just like that with any normal USB connector.
The phone charges over USB and syncs really well. This has been the standard for HTC phones for quite some time now and I hope that other makers of phones will abandon their special connector solutions and just use a normal USB plug or a lightly modified one like HTC does.
Battery time
The battery is depleted quickly if you are surfing a lot, streaming music running the GPS and so on but if you are using it in stand-by mode it will keep you happy for a couple of days at normal use. In the beginning you will probably – like me – need to charge it nighly because it is just so fun to try all the features and bring up the GPS assisted maps, stream YouTube when you are bored and so on. Of course using heavy applications and lots of 3G and HSPA data networks will definitely use up the battery quickly.
But I have no complaints really, if you are conservative with you will probably not have to charge it more than every second or third day. It also recharges pretty quickly if you use the wall plug charger. Charging over USB from a computer that can only deliver 500 mA maximum takes of course much longer.
Software
The software for syncing and backing up is included on the phone. Connect it to your computer using the USB cable, then mount the SD card that comes with it and the sync application, manual et cetera is showing up on a removable disk volume. Just install the software straight from the phone and you are ready. Or look something up in the manual.
Adding your MP3 music is just as easy, just drag them to the music folder on your phone, allow the copy to finish and then you are done. The copying is pretty fast as well, seems to be USB2 which is so much faster than my older HTC mobiles that was taking forever to store music.
Oh, and the mobile can be used like normal whilst connected to the PC with the USB.
Android OS and Interface
The Android OS is developed by Google and this is obvious from start when setting up the phone since it asks for your Google online username and password. Once given to the phone it syncs the calendar and mail account with the online GMail and Google Calendar and many other services you might be using such as GTalk and so on. Lovely stuff if you like the G approach to online life then this phone is definitely for you! It also have mail applications that can handle Exchange mail and normal POP/IMAP accounts as well of course though I have not had much use with these yet and gmail is doing the job rather nicely for me.
The interface is smart, sleek and very fast. I have not been able to make the phone slow down yet with the applications I have been running. The menus just slides out and back again really smooth and nice. The settings in the phone is very logically arranged and it just takes seconds to find something you don’t have to hunt around in an obscure menu system and most of the things just works out of the box.
The on-screen keyboards
There are several of on-screen keyboard to chose from and whenever you touch something to type the phone gives a tactile response by a very short vibration. This is really great because most touch keys are difficult to see if you hit or not because even if the key gives a visual response the finger usually blocks the view! Great thinking here.
Swedish keys are located on one of the keyboards directly and in the others you will have to press the A button or O button down to bring up a row of accented characters and then slide your finger off to the Å, Ä or Ö characers as desired.
Sky map
The mobile features a GPS receiver, a magnetic compass and accelerometric sensors that can tell how you are holding the phone. And of course google has released a real killer app to go with that, the google stars. Go out on a starry night, give the GPS a few seconds to locate your position (or use the cell towers to triangulate your position down to a few hundred yards accuracy) and then start the Google Stars app and hold the mobile up to the part of the sky you are viewing. Instantly the mobile will show you the stars and their names, constellations, where the polar star is and show you the positions of the planets and so on. I can’t really tell you how fun this is – you just got to try this out yourself. Incredible!
Navigation for car and by foot
Oh I already mentioned the GPS. It loads information over the network where the satellites are so it aquires a position within seconds when outdoor. If it can not find a GPS fix it will still give you pretty accurate position based on information from the cell towers if your operator supports this. The magnetic compass shows where you are heading and the GPS plots your current position on Google Maps. Now just find where you want to go and it will take you there. Really good for finding addresses, stores, shops, people… searching on the map ties in to many other databases on the Internet and usually gives you really accurate information. I am a jogger as you might have come to know by now.
One of the more esoteric application is a metal detector that detects ferro-magnetic materials. It’s quite funny and uses the compass of course to do this but it is great fun. It may even be useful to locate stuff in walls…
Geocaching
The phone with GPS and magnetic compass also have applications for Geocaching through the Application Market (where most apps are free) and I have tried out the GeoBeagle application which is a really great app. Press a key and it will take you to the Geocaching online site listing the closest caches for you that you have not already found. Select one of them and then press view as a google map and GeoBeagle snatches it up, shows you a directional compass where to go, distance, accuracy of your position and you are ready to go.
When you find it you just press a key to log your find (or DNF, did not find, as it may be) and you have logged another cache. So simple
Cardio Trainer application
Yesterday I found another killer app that you can use that plots your running on a google map, keeps track on your progress in tempo (minutes per km or mile) and distance and time in km or miles and minutes. The application can also be set to regularly announce the tempo you are currently keeping and how many kilometers you have been doing so far and on what time. So, with the built in MP3-player and this application I sat off. One minute later the mp3 music fades slightly, then a voice announces that I am doing 6:30 minutes per km. Later on when I reach my first km running the voice tells me that I have now done 1 km in 6 minutes and 52 seconds and so on. Makes you really aware on how fast you are going, if you are keeping a good tempo or slacking off or if you are pushing harder than you wanted. When finished you can upload your track to the web to have more information about it there, share with people or just compare several runs with each other.
I really really like this!
Public Records Office II
I had the grand fortune to be able to re-visit the old public records building. I found when I came home from the first time that I had unfortunately missed many details that I remembered and I also did not find the basement with the elevator machine room and the attic where I think some nice pictures could be made.
Therefore – here is my re-visit to the Public Records Office here in Stockholm. If you have not seen the first article then you should read that one first.
Now you are welcome to follow me into this fantastic place. The building is bein re-made into a place for children, which I think will be really great – very Harry Potter-ish in many ways. So welcome into the magic world of designed offices from the 1880:s.
WordPress 2.8 Editor Problem
After the upgrade to version 2.8 of WordPress my visual editor, the TinyMCE editor used to edit most of my posts disappeared and did not want to start at all. I tried four different browsers with the same problem, Google Chrome, Mozilla Firefox, MS Internet Explorer and Opera and they all had the same problem.
I found other people on the web with similar problems with various solutions but nothing they did helped me so after some trial and error this is what I did and it worked for me:
- Disabled all plugins.
- Removed the site from ”Gears” in firefox browser.
- Cleared the entire browsing history, cookies, and all user data from the browser except for saved passwords.
- Logged in to the site and went to ”Tools->Upgrade” and did a re-install of the 2.8 version of wordpress.
- Re-enabled the plugins I wanted.
- The visual editor now works.
This solved the problem also in Google Chrome but required a restart of the web browser. The Gears is disabled in the ”under the hood” settings of Chrome.
I hope others may have some help from this because it was rather annoying. I think it was a problem with saved cookies in combination with the google gears.
Stockholm Marathon
We went to watch the Stockholm Marathon 2009 today and it was a great party really, so many people everywhere! And so many people running today, it was great to see, a wonderful bunch of people from everywhere running together or spectating.
We had a picnic at Långholmen close to the dreaded bridge Västerbron which is a rather tough part of the track. The runners pass this point twice and I took some pictures from the crowd running.
We were also looking for a couple of people we knew who would be running but since it was really crowded at times I think we missed them all in the crowd. Sorry, we still cheered for you!
Photographing from Kilimanjaro
A friend revealed at the last movie night gathering that he is going to Kilimanjaro and asked for some advice on what equipment to bring and I thought I would collect my own thoughts on the subject. Loving to walk around in the woods and hiking in the more mountainous areas in Sweden I have a little experience and I would like to share my thoughts on that subject.
First of all everything depends on your weight constrains. Do you have people who can share your load and help you carry camera gear and are happy to do so, then you have a bigger freedom. Do you have to carry everything yourself, taking into account that the partial oxygen pressure at 4 000 m above sea level is about half the normal pressure you probably wish to slim it down. Therefore I will make three recommendations, one where weight is an issue but not a big problem, one where you are a bit more weight consciousness but you might be able to share lenses and other equipment with a friend or two and the last one is if you have to carry everything yourself and must minimize the weight.
Camera body
The camera bodies can be divided into mainly four groupings, the entry-level cameras, the more advanced hobbyist cameras, the semi-pro segment and the professional high-end cameras. Each of them have various advantages and disadvantages and the best camera for an expedition like this is a trade off between several different factors such as weight, capabilities, picture quality and ruggedness.
Below is a table that shows a comparison between many common models from Nikon and Canon, it is not complete but if you want you can help me by submitting more information through email or by leaving a comment on this post. I also have no experience with cameras of other brands so that would also be appreciated if someone would add more information.
In the table below type refers to the four main types of camera bodies that I talked about earlier, size is a grading where 1 is the lightest house and 5 is the most heavy house. Weight is similar to size in this aspect, price is a subjective feeling for the cost for the house alone, quality is a subjective idea of the picture quality the camera produces (and not fixed to the amount of pixels alone but a general feel for noise at high ISO settings and so on). Rugged means the camera is less suited to outdoors activity (1) or better suited (5). Notice that no camera actually gets a 5 here, this is to mark that all cameras are sensitive but handles shocks, dampness, dust and moisture more or less well.
The comparison is also subjective based on personal experience and friends suggestions so you might think your model got an unfair rating in one or more of the columns, you are okay to leave a comment and tell me about it and I will consider revising the table.
[TABLE=5]
Click on the column headers to sort the table for each parameter you are looking at in order to determine what you think would be the best type of body for your expedition!
Which is right for me?
If size matters mostly you should take a look at entry-level and hobbyist cameras. They are slimmer in size and also weigh less than the other cameras. However they usually do not deliver the same quality of pictures as the more pricy, hefty cameras but this should not be a problem mostly since it is much more up to the photographer than his equipment how good pictures becomes in the end.
If you can expand a bit on size but still wish to keep the weight down, take a look at the semi-pro range. This is where you will get the most bang for the bucks and the most quality for the weight and size of the camera.
If you are a professional photographer demaning the absolutely best from your camera, then you already know what to take with you. Of course you will take your beloved D3 or 1D camera to the top, no matter the size and weight of it.
Lenses
The next problem is to find out what lenses to take with the camera body. I will recommend three lenses if weight and size is not a constrain and this is the normal recommendation always:
- A good wide angle
- A great normal
- A good telephoto
And it is here the DX format cameras have an advantage. You get resonably good lenses for a good price and low weight which means you might bring an extra lens compared to the full-frame FX format cameras where you need more hefty and expensive glassware to go with the body.
Not only are the lenses heavier for FX cameras because they have to deliver a wider image circle to the sensor but they also need a step up in quality because of the added resolution. A cheaper lens will show that it is a cheaper lens on a higher quality camera body more than on a lower grade body.
Lenses for Nikon DX body camera
DX-body recommendations, 3 lenses
Now, here are some recommendations of lenses for a Nikon DX camera setup that I think you would find reasonable:
Nikkor AF-S DX VR 16-85 f/3,5-5,6G ED-IF
This is a sharp lens that gives you that extra in the wide angle area and also goes all the way to work as a pretty good normal lens in the range of 30-70 mm as well. Really this is a gread all-round lens that you can find use for in almost any situation.
The VR function to reduce vibrations works very well here and gives you the ability to shoot scenery with as much as 4 stops lower light than you would without it! This is really great.
The disadvantage with this lens is that it is not very strong in low light conditions and therefore I would recommend another lens, the famous;
Nikkor AF 50 f/1,8D
This is a cheap but very very good lens. Gives you crystal sharp pictures, can be used a low light conditions with no problems and is great for portraits and details as well as panorama pictures where you shoot several pictures in order to later stitch them together to one large photograph. One of my personal favourites of all times!
Nikkor AF-S VR 70-300 f/4,5-5,6G ED-IF
This is a really neat lens to get close to wildlife. Especially on a DX body where it gives you the equivalent of a 500 mm lens on a full size sensor body. It is just plain lovely and I love this lens. It is sharp, low in distorsion and reasonably light weight as well as the price is not bad at all.
The VR function means you are able to shoot hand-held at 300 mm even in moderate light conditions! Few other lenses would allow you to do that.
DX-Body recommendations, 2 lenses
Nikkor AF-S DX VR 18-200/3.5-5.6G ED-IF
This lens is a one stop shop. If you can only afford in weight and size to take one piece of glass for your camera get this one. I know the sharpness is not the best but the usefullness of this lens to go from a good wide angle to a reasonable tele is just priceless! And the the price on this lens is also pretty neat. You may even find used lenses for half their new prices on Ebay or similar places.
One thing though, when you walk with your camera this lens has a tendency to extend by itself. Get some rubber bands or something to keep it from extending by itself when you walk and you should be ready for anything really.
The 18-200 is good for wide angle nature shots as well as portraits and you may also zoom in to capture that wild-life that happens just out of reach of other lenses.
Nikkor AF 50/1.8D
Because it is so light and you can use it for so many different things including lovely panoramas (hand held no less). Take it. It weighs almost nothing and the size is really small.
DX-Body recommendations, 1 lens only
See the two lenses recommendation above. I mean that, seriously, the 18-200 for versatility and the 50/1.8 is so small, cheap and light in weight there is absolutely no reason for you not to take it with you!
FX-Camera recommendations
This is very tricky really because if you are using FX cameras you have already committed to heavier gear and so perhaps you do not have the same constraints in weight and size. However, if you want to keep weight down the f/2.8 lenses are very heavy and you should try to find alternatives. The 70-300/3.5-5.6 described in the DX section works equally well for the FX cameras so this would be a given light telezoom of reasonable quality to bring.
One or two fixed focals such as 30 and 50 mm would be very useful as well for shooting low light conditions.
Vibration reduction
Lenses with VR are great especially if you can not afford to bring a tripod for the weight or the cumberness of it. However it does not replace a good fast low-light lens because it does not help with moving objects for example.
Remember that when the camera is tripod mounted or otherwised fixated you should turn the VR function off. Otherwise it might actually cause blurred pictures! And it also uses battery power for no gain.
Batteries
Make sure you have batteries with you. Since you are away for days and will not be able to recharge it is really good if you can get a battery grip for your camera that you can use ordinary size AA (R6) batteris in since you can find these batteries in almost everywhere in the world and the alcaline version keeps for ages in your bag. It also takes just a few seconds to replace the batteries when you need to.
Many cameras also deliver more performance when you use battery grip with the camera. As an example the Nikon D300 camera can deliver 5 frames per second continuous shooting with the standard battery. With 8 size AA batteries in the battery grip you can get a whopping 8 fps from it! This is something that you normally would not expect unless you were using the most professional types of cameras. Check your specifications! 8 fps is really great when shooting fast events such as wildlife!
Batteries are heavy but make sure you have enough. Make sure you also know roughly how many pictures you are able to take before it is time to change batteries. Keep in mind also that in cold temperatures batteries do not fare well in delivering their energy and will go flat much faster than in moderately sized temperature. Also beware of old batteries leaking in hot temperatures, remove from camera and store in sealed watertight plastic bags until you reach some place where you can dispose of them safely and environmentally sound!
There are solar chargers on the market that claim they can charge 4 x R6 or 4 x AA sized batteries on solar energy given 12-20 hours of sunshine. I would not rely on these for an expedition like this. Keep alkalines ready to use!
Accessories
Tripod
A tripod is always a best friend of a photographer. But it is also a rather big and heavy item. However the usefullness of a tripod can not be stressed enough really although it is up to you if you can carry it or not. There are also other options that can be used during certain situations that works well and in this section I will attempt to discuss some of them and their advantage or disadvantage to a proper tripod setup.
Bean bags
These are really simple things, you can make them yourself quite easily, make a rectangular piece of cloth, doulble the langth compared to the witdh. Stitch two sides of it together carefully, then fill it up to 2/3 with something like dry rice, lentils, beans or something similar. Stitch the last part together and you now have a ”bean bag” which you can put on a stone or similar to rest your camera on serving as a crude but pretty effective tripod.
If you are using a longer telephoto lens, then the lens will also need the support of one or more bean bags and you can make them in different sizes for different situations. Then when you put the camer on to them you can push and prod the bean bag until you get the right framing of the scene you are trying to shoot.
An added bonus is that you can boil the beans as emergency rations should the need arise.
Gorilla pod
The gorilla pod is a short snake-looking tripod construction but it mainly works well for lighter cameras. If you are thingking of using one of these you should check it out with the different lenses that you are going to want to use. A too heavy lens will make the gorillapod seem like a toy.
Memory cards
Not much to say, bring enough. Depends a little bit on how you work with your camera but bring more than you think you need. It is always hard to start erasing pictures in camera in order to fit more pictures. You never know until you are back home eactly how the focus went because you need to view the pictures on a full screen or at least bigger than on the display back on the camera.
And don’t use that display to judge the exposure, for that you need to learn how to use the histogram in the camera. The display is nice for checking framing and when you zoom in you get some idea where the focus went but for exposure it is very difficult to use.
The Rails
Under the Bridge
The Public Records Building
Last saturday we set out about 11 hobby photographers to the old Public Records building here in Stockholm. It was my Flickr aquaintance Björn Sahlström who had been able to get access to the building and we entered it with camers, tripods, bags of lenses and other gear to have a good time. The building is fairly large so we quickly spread out and did not have to step on each other’s toes at all really.
Strolling through the empty halls that used to hold all the stat public records and books was a strange feeling, I had never been there, some of the others had been on a guided tour and quickly went to photograph what they knew to be well worth taking a look at.
This building is called ”Riksarkivet” in Swedish and was built around 1880 with the intention of being able to withstand a fire. From the beginning the archive was only open during the light hours of the day because they did not want open flames or even electricity inside. Therefore it has huge windows to let enough light in for people to be able to work there with reasearch or book keeping tasks of various kinds.