Como alcanzar la luna con tu reflex

How Do You Reach the Moon with Your SLR? Strap on Five Huge Lens Extenders (Updated)

So you want to snap some detailed shots of the moon's surface, but you're over 200,000 miles away and lack any sort of telescope. No problem! At least if you have a bevy of focal length extenders. Improvised astronomy!

The crew at BorrowLenses stacked five Canon 2x focal length extenders under their 800mm lens, providing an image that was actually too close:

But when they took off a couple, the result was stunning.

Perhaps not the most practical way to get a gander at the moon, but it takes guts to use your gear in ways it isn't meant to be used—especially when the entire setup was "bending and flexing." Nothing that expensive should ever be bending or flexing. [PetaPixel]

Update: Reader Matt M. was kind enough to write in saying he was along with the crafty dudes who rigged this super mecha lens (which used a Canon 1D Mark IV), and has a video to prove it. The kids shooting the flick sound like giggly middle schoolers, but the footage is pretty terrific. Maybe just try putting it on mute.

Fuente: http://gizmodo.com/5716810/how-do-you-reach-the-moon-with-your-slr-strap-on-five-huge-lens-extenders

Tasando nuestras fotografías II

Complementando la nota que había compartido anteriormente, les traigo ésta :)

Pricing your photographs (tip)

This article deals with pricing images that you’ve already captured. The trick which I reveal to you can be successfully tweaked to give you reasonable price ranges for services also.
You've taken many photographs and you've honed your skills to the point that you think you could sell some.
Now the question is: what price exactly? Overprice your photo, and you will never hear from a buyer again; sell it cheap, and you are losing money.
How to find the right price?
In business terms, you would have to look into demand and supply forces and deduce the market clearing price. But we don’t want to over complicate things here; you certainly don’t need a business degree to sell a photo or two… What we need to do is what businesses have been doing for ages: to look how competition is pricing its products. I’m sure you knew this, but here comes the tricky part; this type of information isn’t freely available…
The Solution is simple!
Next best thing to a photographer’s price list is a stock agency website! (And when I say stock agency, I don’t mean micro stock agency, which is basically a rip-off, a type of slavery for photographers).
I’ve been successfully using: alamy.com
Procedure is easy. Use alamy.com to search for similar photographs, and look up prices based on the usage specified by the person who has inquired about images. Check multiple photos, so you can have a good average.
To make it work as intended, you will need to get following information from your customer: Image use, Details of use, Image size, Print run, Placement etc.
Let’s see it in action:

Brilliant isn’t it? To achieve same pricing simplicity you would have to buy $700 software – really!

Fuente: http://betterdigitalphotography.blogspot.com/2010/11/pricing-your-photographs-tip.html

Bajando fragmentos de archivos, con Partial Download

Have you ever received a link to a huge video or discovered a link to a larger file on the web that you were not sure about? Maybe you are currently on a slow Internet connection and do not want to fill the tubes with that download for hours. A preview would be nice and that’s exactly what partial download offers.

The free application can download the first bytes of a selected file from the Internet so that the local user can preview the file without downloading all of it.

That’s obviously only going to work if the file can be previewed if it is not fully on the computer. That works for videos very well, but not at all for archives or files that require all data to be present before they can be displayed or loaded.

Lets get back to the 100 Megabyte video that someone posted that you want to take a sneak peak at. With Partial Download you would use the command

"partial download" target url

to do that. To download the video example.avi from Ghacks’ root directory you would use the command“partial download” http://www.ghacks.net/example.avi

Partial Download downloads 1.5 Megabytes of the selected file by default. This value can be changed to another size by adding the new size in bytes at the end of the command, for instance 150000 for 150 Kilobytes.

Users do need a program that can play or display incomplete files on the system. Many video players can play incomplete videos, VLC or MPlayer variants can do that for instance.

Partial Download is a handy portable tool for users who want to download part of a file to preview it on their computer. The program could do with a gui or browser and email client integration to make that process more comfortable.

The software has been released as part of Donation Coder’s Nany 2011 challenge. Download and additional information are provided at the project website at Google Sites.

Fuente: http://www.ghacks.net/2011/01/01/partial-download-download-part-of-a-file/