Lists

Funny videos

It’s Monday and I’m swamped. I’ve got a ton of photos to post-process, and various other things have piled up as well. There are a couple of reviews in the queue, plus a few condensed knowledge posts, so watch for those later. Today, you get funny videos.

I love this computer monster. If all computer “monsters” were like this, working in IT would actually be a fun job. Not to mention that this would be a great way to dispose of old hardware.

Those Japanese are at it again with Human Tetris:

A compilation of people getting frightened:

Here’s some more great Harry Enfield stuff: The Conjugal Rights Guide.

Do you enjoy the mind-numbingly ridiculous security checks at airports? Yeah, me neither. That’s why we can all relate to this “TSA-approved” video:

Darth Vader spoofs are particularly funny to me. Perhaps it has to do with the marked contrast between the movie persona and what we see here…

… and here.

Standard
Reviews

L.L.Bean gets it right

L.L.BeanMy first shopping experience at L.L.Bean was sometime in 1996, when I purchased a winter jacket from their catalog. There were two choices in the fasteners for the hood, and I picked the one that didn’t work out. I called them a few weeks later to ask if I could get the other fasteners, and to ask how much they’d be. Their answer floored me: they’d be free, and they’d also be shipped to me for free. Wow.

Furthermore, the customer service rep said that if I ever didn’t like the jacket or it started to come apart on me, I could send it back for a refund or an exchange. I still have that jacket, and can’t bear to part with it. It’s just as sturdy as the first day I got it, although the colors have faded a little with time.

Over the 4th of July weekend, we dropped by the L.L.Bean store at Tyson’s Corner to get some winter boots. As I was about to try mine on, the clerk offered me a brand new pair of heavyweight socks to try with the boots, so I’d get a better idea of the fit. He literally pulled them off the shelf, broke apart the packaging, and handed them to me. Wow.

It just so happened that I found the medium width a little tight, and was worried it might bother me later. No problem, the clerk said. I could order the wider size along with the regular and try them both out, then bring back the one that didn’t fit right. I said I wasn’t comfortable bringing back merchandise that I’d already worn, but he said it would be no problem, that the right fit mattered more. Wow.

I ended up getting the heavyweight socks I’d tried with the boots as well. They fit so nicely, and the quality exceeded my expectations. Ligia ended up getting the same model boot in her size, and heavyweight socks to go along with them as well. Not only that, but we bought two more pairs of shoes.

While we were there, we saw a beautiful high-back sofa, but weren’t sure what finish we’d want on it. (We’d been looking for just such a sofa for the longest time.) The store had only one finish in stock. No problem, said L.L.Bean customer service when we called. We’ll send you out some swatches for free, and you can call and order the sofa when you’ve decided. Wow.

Calling L.L.Bean is an epiphany onto itself. You don’t get robots or prompts. You just get a live, friendly, helpful human being, usually after just a few rings. What’s more, they already know who you are when you call. If you’re calling from the same phone number you’ve listed in your L.L.Bean account, their CallerID system pulls up your account for the customer service rep. Wow.

When you put together fantastic customer service and beautiful, well-made products that last, you’ve got one company that deserves our business. If they keep on like this, L.L.Bean can count me as a lifetime customer.

Standard
Lists

Cool science videos

I like to see scientific principles at work in everyday activities. Here are a few videos that illustrate this. Enjoy the weekend!

Galileo postulated that objects fall at the same speed in a vacuum, regardless of their weight. When we got to the moon, they did this experiment on live TV:

Here’s a bar trick that involves simple density physics:

Another bar trick involves simple dimension estimations:

Handling molten glass is an art and science onto itself. Molding it into shape, whether by blowing into it or by using tools, while it’s still white hot, takes knowledge about materials, temperatures, talent and a lot of hard work. It looks easy in this video, but it isn’t.

The Aardvark is designed to take out land mines. Its action is simple. It rotates chains with attached deadweights at high speed, combing through the ground. When it hits a landmine, they go off. The vehicle is heavily plated, and incurs no damage. It’s really cool to see physics and chemistry in action. Can you spot the different forces at work?

This next video shows what happens when water freezes: it expands. Because in this particular location the water is surrounded by rocks, the extra volume of ice has no place to go but up. It’s an unsettling sight, but it’s just a simple natural phenomenon.

The ferrofluid sculpture you’re about to see made the rounds a while ago. It’s a crowd pleaser, but it works based on magnetic forces. The fluid is filled with iron particles, which are magnetized. Electricity is likely used to create a magnetic field which varies in size and force, allowing the artist or a programmable chip to control the fluid’s movement.

Standard
Reviews

Lens review: Canon EF 100-400mm f/4.5-5.6L IS USM Zoom

Canon EF 100-400mm f/4.5-5.6L IS Zoom Lens

I had a chance to play with Canon’s affordable 100-400mm L series zoom last week. I rented it for a day from Penn Camera at Tyson’s Corner, mounted it on my 5D, and ran out to chase wildlife as soon as I got home from work. As the sun began to set, I took it up to the roof, set it on my tripod, and took photos of the horizon. In the morning, I snuck out onto the terrace at sunrise and got photos of that as well. All in all, I put the lens through its paces, shooting in daylight, dusk and dawn conditions, handheld and on a tripod. Even though I only used the lens for a day, albeit a pretty full one, I’m fairly comfortable with what I’m about to say.

Leap year for Mr. Chipmunk

Tree cover at sunset

The robin examines me

I liked it. The 100-400mm range is a versatile range, and the fact that you can get this L series lens at around $1,400 makes it a bargain. The lens isn’t as heavy as the 70-200mm L series zoom (which I played with today), and it’s fairly comfortable to hold for moderate amounts of time. It has a push-pull mechanism for extending the focal range, and that has its benefits and drawbacks. The benefit is that it does make it a bit easier to get through the large focal range a little faster. It’s also necessary in order to make the lens affordable. Push-pull lenses are cheaper to make than regular zooms, and require less glass as well, making them lighter.

Bethesda, as seen from the top of Grosvenor

Tuckerman Lane at sunset

➡ Updated 7/4/07: Erik Persson asked me two relevant questions this morning via private email. One is about how the autofocus handled, and the other was about whether autofocus is possible at all with an extender, or whether manual focus needs to be used. Autofocus was a bit slow, but that’s to be expected. This is a big zoom that can focus over a large distance. There is a focus limiter switch that decreases the focusing distance. You tell it to focus either from 1.8m to infinity or 6.5m to infinity. If you know you’re only going to shoot things farther away than 6.5m from you, then set the switch to that, and the autofocus will be a little faster. I’m not sure how to answer Eric’s second question. He suggests autofocus on EOS models up to the 5D is possible only up to f/5.6, and Mark 1D models can autofocus up to f/8.0. Not sure about that. I can only point you to this lens chart at Canon, which talks about the compatibility of the extenders with various lenses, and tells you what the expected aperture will be, and whether or not autofocus will be possible at all. I checked the specs for the 5D and 1Ds, and can’t find the upper f-stop limits for either models. Perhaps a call to Canon will clear this up, but it is the 4th of July today, and I doubt they’re open. Maybe one of you who has more information is willing to comment on this.

Beautiful swallow

Ugly one awaits

➡ Updated 7/6/07: Erik got back to me once more with a link to a review by The Digital Picture, where the AF to aperture specs are discussed. Furthermore, he provided a link to specs from Canon for the EOS 1v SLR (film camera) where the bit of information about being able to use AF with lenses that only open to f/8 is provided. So it looks like you’ll have to use manual focus if you stick extenders on the 100-400mm zoom. Thanks Erik! You know, you could just as well use the comments instead of sending me emails, but whatever works for you. 🙂

Moon rises over Grosvenor

Grosvenor rooflines

If you’ve been looking at the 400mm f/2.8L tele, which retails around $6,500, and you’re wondering why this lens is so inexpensive, you should know there is a reason for the price difference — but I doubt you needed me to tell you that. I stated the reasons in the paragraphs above, and they are: less glass, push-pull mechanism for the EF 100-400mm zoom lens. I haven’t tried out the 400mm tele myself yet, but I have a feeling it’s a great deal sharper and has more contrast than this lens.

Early morning contrails

Clarity

I think you can already guess what my two complaints are: the details are a bit soft when the photos are viewed at 100%, and the push-pull mechanism creates a sort of vacuum between the camera and the innermost lens. Every time I extended or contracted the lens, air rushed in or out through the crevices. I’m sure things are isolated pretty well and dust doesn’t get sucked in, but it feels odd, and it makes it difficult to stop at say, 300mm. It’s certainly a lot easier to either pull the lens all the way out to 400mm or push it all the way back in to 100mm. You know how they say that zoom lenses are soft at either ends of the focal range? Well, it would have been nice to have some sort of limiter switch that could let me stay between 110-390mm, or something like that. With the push-pull mechanism, it was hard to get the focal length just below or above its limit in order to avoid softness.

Wood duck advances

EF 100-400mm lens, wide

Having said all this, let me reassure you that this lens is a bargain at its price. If you’ve had your eye on it, get it. Realize you won’t get the results you might get with a more expensive tele, but you won’t pay through the nose for it either. This lens will definitely shine on cropped sensors like those found in the 30D and Rebel, where the effective focal range will be 160-640mm. How else can you get in the 600mm focal range without spending a ton of money? What’s more, with extenders like the 1.4x or the 2x, you can get up to 800mm on a full sensor or up to 1260mm on a cropped sensor. That’s pretty amazing!

Heron at Grosvenor Lake

Afternoon traipse

There are a few other things to keep in mind though. The maximum aperture at 400 mm is f/5.6, and that means you’ll need pretty good light in order to shoot handheld with it. If you stick an extender on it, the effective aperture will get even smaller, so you’ll either need serious daylight or a tripod. But, as I’ve already said, you get amazing range with this lens, and it’s inexpensive for an L series zoom. If you’re willing to live with the few issues I’ve outlined, then get it.

Many lives

Waterside

Buy the lens

Sun sets over Grosvenor

Standard
Events

Happy (belated) Birthday to ComeAcross!

After getting home this evening, I remembered (and it wasn’t the first time) that I’ve neglected to write about my blog’s first birthday. It is, after all, a momentous occasion, and needless to say, one I won’t encounter for some time again… 🙂

If you haven’t already, have a quick look at the About page. It’ll give you a bit of the background information about my blog, whose roots go back as early as 2000, which is when I started self-publishing articles on the internet, through other sites of mine such as LupusPernix, Amalgamy and Dignoscentia. You may get a chuckle out of this: when I first heard about blogging, I thought it a fad and dismissed it as such. But that “fad” didn’t die out, and what’s more, I started seeing some really nice content created by bloggers.

After some hemming and hawing I decided to jump right in, and wrote my own blog software over at Amalgamy in March of 2004. It worked nicely to get my feet wet. Then I discovered Blogger, and started writing there in February of 2006. That was fun, but I really wanted to host the blog on one of my own domains, and wasn’t enthralled with Blogger’s publish-through-FTP features. That’s when I discovered WordPress (Thank you Tony!), bought the ComeAcross domain, and after a lengthy process where I took old content and ported it over to my new blog, launched the site on May 3, 2006. Incidentally, it would have been nice if I’d written this post on May 3, 2007, but two months late is still okay, I suppose.

Why comeacross.info, when there are so many splogs on the .info TLD? Well, I thought the title (come across) and TLD nomenclature (.info) meshed nicely with the scope of my blog, which is to present interesting information to people. It may sound corny, but to me, comeacross.info = come across information. I like to think of my blog as a nice surprise among the many crappy splogs you’ll find among the .info domains. I may at some point move it to a .com TLD, but for now, it works nicely right where it is.

Last October, I wrote a post entitled Who We Are, which was meant to give you, the readers, a nice, transparent look behind the scenes at ComeAcross. It accomplished its purpose, and I kind of like that post’s transparency. In that same spirit, I wanted to offer some updated stats on ComeAcross, via screenshots from my WordPress, FeedBurner and Google Analytics dashboards.

The first is right from my blog’s dashboard. As you can see, I’ve got 890 posts and 661 comments. Those 61 categories are weighing heavily on my mind. I really need to cut them down somehow, but it’s so hard for me to pigeonhole my content. The other cool stat comes from Akismet, my comment spam plugin. It has protected ComeAcross from 152,982 spam comments. None of them made it to the blog! That’s beautiful!

ComeAcross -- WordPress Dashboard

Next up are my feed subscriber stats, courtesy of FeedBurner. The feed subscribers are the folks who have clicked on the orange feed icon in the top right portion of my site, and added ComeAcross to their daily list of sites they read through their favorite feed reader.

💡 If you haven’t already, you’re welcome to do the same. It’s easy and it’s free. I recommend Google Reader. It’s also free and very easy to use. If you don’t like feeds and prefer to get my content via email, enter your email address in the field under “Get ComeAcross by Email” title in the right column, and click on Subscribe. Look for a confirmation email, click on the link, and you’ll be done. You can unsubscribe at any time, and this is also free.

What’s cool about my feed subscribers is that the number has been steadily growing since I started my blog. It’s really nice to see, and it’s very encouraging for me to see so many people enjoy reading my posts.

ComeAcross -- Feed Stats Dashboard

Now for some fun traffic stats, courtesy of Google Analytics. Apparently, over 42,000 people visited ComeAcross since I’ve launched it. That’s a huge number of people, and it’s humbling to see that my writing has reached such a large audience.

ComeAcross -- Site Visitor Stats

The pages on the site were viewed over 73,000 times, and if you’ll look below, you’ll see that my most-read pages to date are the index (as expected), the one about Zooomr’s Mark III release, the review of the HP laptops, my caveat emptor post about Davison Inventegration, and my post about our Betta fish. I’m truly amazed that I still get traffic to the Betta fish post. It was originally an article at Amalgamy, and I ported it over in 2006. I wrote it back in 2005, and we don’t even have Betta fish any more. 😕

ComeAcross -- Site Content Stats

Finally, I have to thank Google big time, because they send the most traffic to ComeAcross. I truly benefit from the long tail of web searches. Over 53% of my traffic comes from search engines, and more than 46% of my total traffic comes from Google. As you can see, I got some Digg and StumbleUpon traffic as well, along with some other Yahoo traffic.

If I had to choose between Digg and StumbleUpon traffic, I’d choose StumbleUpon any day. Digg traffic occurs in bursts that risk crashing my web server, it doesn’t monetize well, because the visitors only care about skimming the content, and it also doesn’t convert well (from casual visitor to subscriber). StumbleUpon traffic, on the other hand, grows slowly, is more constant, monetizes very well (people actually click on the ads once in a while) and some of the casual readers even turn into regular readers. So, StumbleUpon, thank you!

💡 Incidentally, if you, the reader, would like to do me a great service, submit either sections of the site or particular posts that are of interest to StumbleUpon. You can use either the StumbleUpon toolbar, or the “StumbleIt!” link below each post of mine. You have my thanks in advance for that!

ComeAcross -- Site Traffic Stats

With this, I close my post, and wish my blog a Happy, if belated, Birthday! 😀 It’s been a very interesting first year, and I look forward to more of them ahead! In the interest of increased transparency, I spent approximately one and a half hours researching and writing this blog post. It probably took you 5 minutes or less to read it.

Standard