Archive for January, 2008

Freecom Musicpal

Thursday, January 31st, 2008

MusicpalThe freecom Musicpal is an affordable internet radio which supports the WMA format and can be connected to WLAN or LAN. It’s available from Januari 2007 for about €130. I have been looking for an internet compatible radio because I don’t like to keep a computer powered on just to listen to the radio and I wanted something which could be used in the kitchen and bathroom as well.Musicpal

The Good Side

So let’s review it after a week of usage. On the bright side, it worked perfectly straight out of the box. All I had to do was connect the power plug, wait for the boot up sequence, choose my router from the list and enter the password. After that, I had access to about 4000 internet radio stations from all over the world.

The radio is able to display your favourite RSS data stream so you can keep up to date on the latest gadgets or news. When playing songs, the data of the current or next song can be displayed instead (when transmitted by the radio station)

It’s an alarm clock which allows you to set a fixed alarm time on the days you want (for example on weekdays, but not in the weekend). The display is quite big and easy to read when placed on a bedside stand. Even when the power is switched off, a faint white glow will make the time readable at night.

There are instructions provided on the accompanying CD to turn your home ciomputer into a music server so that the radio can access your MP3 files remotely. This worked without any problems on my acer laptop with Vista basic edition. Some of my favourite podcasts like the BBC documentary archive were in the MP3 format as well, so the radio could stream them from within my iTunes directory once I got the windows media player to look for music there. (it won’t play the apple tracks though as they are in a different format)

The Bad Side

So what’s the downside then? Well, the radio has plenty of room, but for some unintelligible reason an external adapter is used. This means that even when the radio is switched off, it still draws a little power. This seems to happen with more and more devices these days and it’s a waste of power, annoying when you move the device from one room to another and les safe than a real switch to cut off the mains supply. Because the power unit is external, the mausicpal weighs very little and when you press the buttons it slides along the table so you have to hold it with your other hand or put it with its back against something heavy.

The sound quality from the internal speaker is mediocre. Compared to my favourite radio the Tivoli Audio Model One, there is a distinct lack of bass. It sounds more like a €25 cheap radio set. The volume range goes from 0 to 100, but it does so in steps of 5. This means that you have 20 volume levels with the lowest one beeing a mute and anything above 60 causes the internal speaker to be overdriven. The first level (5%) is a bit too loud for late time bedside music as well. The good side is that the speaker does not produce any hiss and the typical compression effects of low bandwith radio is masked very well. There is a line out connection, so it’s possible to disable the internal speaker and connect the decoded audio stream directly to a more performant system. In this light, the internal speaker should be seen more as an add-on to make the unit portable instead of a high-end music system. For good quality sound, you definitely need an extra amplifier and speakers.

This is also the first radio with a boot up time. From plugging in to the mains power to the first sound takes a good ten seconds. Which seems a lot longer when you’re waiting next to it to choose your desired radio station.

The BBC World service is by default not available, but there is a workaround possible. Edit the favourites list on the radio by downloading it to your pc and adding
#EXTINF:-1,BBC
http://www.shoutcast.com/sbin/shoutcast-playlist.pls?rn=6703&file=filename.pls
Save the file and upload it to your radio. You will now be able to listen to the BBC world service.

Conclusion

I do like the radio and for a reasonable price it offers an excellent wireless internet radio reception. I don’t like the volume control, speaker and external transformer though, but when attached to a home stereo system (which has it’s own switched power out) the disadvantages disappear. Fair enough, it’s good enough to listen to when you are working or concentrating on something else. For true high quality music, consider it as an alternate input source, rather than a complete system.

Follow Up

I’ve been using the radio for over a month now and I must admit that I’ve become quite atteched to it. The sound quality is great when connected to my tivoli model one or sony surround system and I move the radio from room to room with me for listening to the goon show when taking a relaxing bath.

Update May 2008

The radio updated itself this month and now it can play the BBC stations without having to go trough the workaround. Even BBC7 comedy is included! There is now even support for text-display of websites so that you can read your favourite news (or whatever you need updates on) on the radio itself.

Update October 2008

The radio updated itself once again with new channels and even though I lost the goonshowradio in 16 kbps, I was able to add it by surfing to the site with the musicpal and can now listen to it in 64kbps. I really do love this radio. (And it’s the only Linux machine which I don’t have problems with.)

 

Flash bouncing

Wednesday, January 16th, 2008

Let’s try some comparison shots of the different flash possibilities using an external flash. In this case it’s once again my budget friendly Metz-36 which is being used for the testshots. The subject is my daughters pink Automoblox and the lens used is the Canon EF 28-135 IS with an Eos 350d body in a room with a single fluorescent lightsource.

No flash used

The first shot is done by using no flash and a long exposure time (0,8 seconds) which would result in camera shake, but the image stabiliser offers good compensation for this. The picture comes uit quite orange with automatic white balance but a has a warm feel to it.
Automoblox no flash

Internal flash

The second shot was made by using the internal flash. The white balnce is more correct as you can see by the white background this time. The exposure time is only 1/60th of a second and the picture is sharper than the one with long exposure. As you can also see from the picture, the flash does not quite make it to the background which remains pretty dark.

Automoblox internal flash

External flash

The external flash is clearly more powerful as the background is a lot lighter than in the previous picture. The flash is almost too bright for the subject and it looks a lot harsher. Ideally, flash exposure compensation would have to be set so that the flash cuts off the light a bit sooner.

Automoblox external flash

External flash bouced 45°

Now the flash head is turned 45 degrees so that part of the light shines directly on the subject and part of the light is bounced from the ceiling. The picture looks a bit softer since the harsh flash shadows are suppressed. Still, the flash makes the pink windows look less intensly colored.

Automoblox 45 flash

External flash bounced from the ceiling

Finally, we bounce the flash completely from the ceiling. This is an image we’re used to seeing as the sun usually shines on our subjects from above. The pink windows have a darker, richer color whilst at the same time, the wood has a lighter color and the rubber tires have a greater brightness range going from light at the top to dark at the bottom.

Automoblox 90 flash

Multiple flash exposure

Thursday, January 10th, 2008

This is what you get when playing around with the Metz 36 AF-4C flash in a dark room whilst keeping your camera lens open for about five to ten seconds. I just performed random actions before the lens and fired the flash several times.

mutli flashmultiflashmultiflash

External flash

Thursday, January 10th, 2008

Metz 36 AF 4C

Update 15-11-2008: After less than a year of usage, the flash has broken down twice. I was able to repair it the first time, but the inside is really low quality wiring. The second time, it had drawn my battereies empty within minutes and a burned smell came from the inside, so I decided to throw it away and replace it with the genuine Canon article. lesson learned here, cheap equipment can be more expensive in the long run.

A cheap way to add the extra functions of external flash to your canon camera is the Metz 36 AF-4C flash. These are available for under €100 (In comparison, the canon speedlite flash range starts at €300). The Metz flash is very basic in design, but with good functionality.

  • It offers E-TTL (Trough the lens) measuring of the amount of light. This means that the camera fires the flash and stops when the necessary amount of light has been met.
  • It is very easy to use.
  • There is a pattern emitter under the flash head which emits a red striped pattern on the object in the center of the image. This helps the autofocus system to acquire a lock on the subject. This really helps a lot when taking a picture in darkness because the autofocus system does not have to hunt for the correct focus. The beam is activated when the shutter realease button is pressed halfway, the focus system locks on and the beam disappears so that it is not visible in the final picture. This system also helps with even surfaces such as a white wall or dark objects because the autofocus system needs contrasting surfaces to acquire a lock.
  • The reflector can be extended to focus the beam of light. This means that the light can be concentrated when using a tele lens and dispersed when shooting wide angle. The mechanism is really simple, just pull on the hood of the flash and it extends. (the canon speedlite models use a motor to change the flash focus and information about the focus distance for the camera instead). The Metz system is definitely more low tech, but very easy to use.
  • Swiveling head: The reflector can be swiveled upwards in four steps to bounce the light off the ceiling or other surfaces. This results in a much softer and more pleasant lighting than a flash from head-on as the light is less concentrated and we are used to seeing this lighted from above.
  • Manual flash firing: There is a manual flash fire button on the flash so that you can remove the flash from the hot shoe and use it by hand for special effects shots.
  • The flash is pretty fast. Depending on the kind of batteries (preferably rechargeable Ni-MH) It can fire about once every two seconds.
  • Strong flash. With iso 100, the effective range is about 30 metres which is quite good for the price. For comparison, the built-in flash goes about 10 metres.

Metz 36 frontMetz 36 back

Depth of Field

Tuesday, January 8th, 2008

Canon 50 mm F1.8 II

One of the cheapest lenses available for the Canon reflex system is the 50mm F1.8. At under €100 this lens offers great light throughput (In fact, it looks almost more like a magnifying glass than a lens).

Mechanical side

The mechanics inside are not the most up to date and the lens will make a lot of noise when focusing. Focus lock is reasonably fast, but no distance window or full-time manual focusing is possible.
 ef 50 f1.8 sideways
A manual switch has to be used to change from autofocus to manual focus. if you try to focus without having switched to manual, you’ll hear a horrible grinding of gears (trust me on this, it’s not a sound you want to hear ever again) The manual focus ring is tiny and you’ll find yourself setting the lens to autofocus because manual is simply too much hassle.
EF-50 1.8 lens
It’s a fixed-focus lens so there aren’t too many mechanical bits inside and no zooming is possible, but it’s very light and very sharp, even towards the corners of the image (the classical weakness for most non-L lenses) There are five blades for the iris, which results in a somewhat pentagonal shape of the out of focus items instead of a round shape.

Optical Side

This is where this cheap lens truly shines out. No other Canon lens offers this much light for this little money. With F1.8, it’s easy to throw the background out of focus at a very short distance. Note the rose below where the leaves are already out of focus while the petals are sharp. This lens needs little light and is very good at indoor photography without flash or outdoor photography at short shutter speed for fast-moving objects. portraits are another excellent choice for this lens as the subjects face is very sharp, while the otherwise distracting background becomes a mere collection of vague shapes and colors.

Rose with 50mm f1.8