around san francisco

diy collapsible softbox

Not wanting to spend the money for a professional softbox I decided to go the diy route. I had a few criteria I wanted to meet. I wanted something large, portable, and the ability to use two flashes. I searched out a few other designs to get some ideas, particularly some designs from DIY Photography.net. For the size and shape I based it off this model. It is a 40"x24" face and about 20" deep. The idea would be to construct the box so it could fold into triangles. Initially I was thinking of using some sort of plastic, but in the end went with foam core and gaffers tape for the joints. Each "wall" was actually two pieces to fold into a smaller size. With some simple geometry I figured out the dimensions I need and started to cut the foam core. Once I had the pieces cut, it was time to tape them all together. The outside edge has a long strip of velcro to hold it together. The inside was painted flat white which helps bounce the light since foam core is quite translucent.

New target of rights erosions: U.S. citizens

Glenn Greenwald wrote a great piece on the erosion of rights for U.S. citizens under the Obama Administration. This is a must read. Just like the Bush administration, the Obama admin is further eroding civil liberties. Except now the targets are US citizens who can be denied trial, citizenship, and even assassinated for acts of terror. What is an act of terror you ask? Well, it can be simply protesting at the RNC. Truth is terror is at the discretion of those making the charges. This is the beginning of a police state.

From the article:

"It is not hyperbole to observe that all of the above-cited recent examples are designed to formally exempt a certain class of American citizens -- those accused of being Terrorists and arrested on U.S. soil -- from the most basic legal protections. They're all intended, in the name of Scary Terrorists, to rewrite the core rules of our justice system in order to increase the already-vast detention powers of the U.S. Government and further minimize the remaining safeguards against abuse. The most disgraceful episodes in American history have been about exempting classes of Americans from core rights, and that is exactly what these recent, Terrorism-justified proposals do as well. Anyone who believes that these sorts of abusive powers will be exercised only in narrow and magnanimous ways should just read a little bit of history, or just look at what has happened with the always-expanding police powers vested in the name of the never-ending War on Drugs, the precursor to the never-ending War on Terrorism in so many ways."

Vivitar thyristor flash manual power control mod

A little over a week ago I learned that I can very easily modify my Vivitar 3500/35-D flashes to have manual power output control. Previously I tested the different settings on the flash. To give me full manual control I have replaced the photo resistor with a potentiometer. This should work with all Vivitar flashes that use a photo resistor to adjust light output. This mod is quite easy and only took about 15 minutes the second time I did it. The 3500 has a separate module where this circuitry is housed. I know some Vivitar models are one unit, so be aware that flashes have a high voltage capacitor in them and you can shock yourself.

Vivitar 3500 Thyristor Flash

I have two Vivitar 3500 flashes (one is a 35-D, but they are identical as far as I can tell). For the longest time I could not figure out how these things actually worked. There are four settings on back; red, blue, orange, and manual. From the 'calculator' up top you can tell the three color settings are two stops apart, and manual is full power. But until recently I did not know that there is a photo resistor up front which actually adjusts the power of the flash based on the amount of light the sensor sees. The more less light, the more resistance, and the stronger the flash. Thanks to this discussion on the Strobist Flickr discussion group I was able to get a better understanding on how this flash works. I decided to set up an experiment to see how this sensor works in practice. This will apply to all Vivitar thyristor flashes.

photography

It's been a while since I've updated here. I've been mostly focused on my project over at Flux 53. If you're in the bay area come stop by and check us out. I have been taking a great deal of photographs over the past few months. Here's a select few. To see more, check out my Flickr.

news roundup

Got no time to really write a post, so here are some worthwhile links:

US funds dry up for Iran rights watchdog - Federal funding denied for watchdog group that investigated abuses of protesters after this summer's disputed presidential election in Iran.

Price of gold soars on report of Arab states ditching dollar - The dollar will no longer be the currency tied to the price of gold.

Voices against the G20 - Report of protests and activities during the G20 Summit in Pittsburgh.

House cuts workweek to 2 1/2 days - Congress gets lazier.

Progressivism? Not so fast, folks - Dummest thing I've read all week. But it's like a train wreck, you just can't look away.

From Frontline, Obama's War - If it's like Bush's War, it's definetely worth a watch. Still haven't watched this preview.

Mom's designated driver: her 13-year-old son - And for the story that makes you go 'what the fuck?'

more suck from the Obama Administration, net nuetrality, g20, and a robbery

Obama drops demand that Israel freeze settlements

Prodding Israel and the Palestinian Authority to restart talks aimed at a permanent resolution of their decades-old conflict, President Obama dropped a demand for an Israeli settlement freeze, U.S., Israeli and Palestinian officials said.

"Simply put, it is past time to talk about starting negotiations. It is time to move forward," Obama told reporters before a meeting with Palestinian President Mahmoud Abbas and Israeli Prime Minister Benjamin Netanyahu.

"It is time to show the flexibility and common sense and sense of compromise that is necessary to achieve our goals," Obama said.

So ask Israel to block building settlements, do absolutely nothing when they ignore you, then say its not a big deal and things should just move along anyway.


Federal Communications Commission Chairman proposes to possibly extend the agency's network neutrality principles to the mobile Internet

As expected wireless carriers are opposing the statement arguing against government interference to the Internet. The truth is that net neutrality would protect the Internet to be free and open and keep it from a corporate takeover where the highest bidder would control bandwidth. Most people are unaware of the importance of net neutrality legislation and how without it the Internet will be controlled by just a few rich companies like radio and tv are, taking the voice away from the people.


The G20 summit is in Pittsburgh this weekend and the police is prepared. It has been extremely difficult for activists to get permits for marches and rallies and they will most likely be overwhelmed by the police presence. Upward of $20 million will be spent on security while at the same time neglecting the first amendment rights of activists.


On a lighter note, thieves stole a helicopter and robbed a security firm in Stockholm and got away. This sounds good enough for a movie.

Stormtroopers reflect on destruction of the Death Star

Reminds me of something I found a couple years ago:

Uncomfortable Questions about the Death Star Attack

1) Why were a handful of rebel fighters able to penetrate the defenses of a battle station that had the capability of destroying an entire planet and the defenses to ward off several fleets of battle ships?

2) Why did Grand Moff Tarkin refuse to deploy the station's large fleet of TIE Fighters until it was too late? Was he acting on orders from somebody to not shoot down the rebel attack force? If so, who, and why?

3) Why was the rebel pilot who supposedly destroyed the Death Star reported to be on the Death Star days, maybe hours, prior to its destruction? Why was he allowed to escape, and why were several individuals dressed in Stormtrooper uniforms seen helping him?

4) Why has there not been an investigation into allegations that Darth Vader, the second-ranking member of the Imperial Government, is in fact the father of the pilot who allegedly destroyed the Death Star?

5) Why did Lord Vader decide to break all protocols and personally pilot a lightly armored TIE Fighter? Conveniently, this placed Lord Vader outside of the Death Star when it was destroyed, where he was also conveniently able to escape from a large-sized rebel fleet that had just routed the Imperial forces. Why would Lord Vader, one of the highest ranking members of the Imperial Government, suddenly decide to fly away from the Death Star in the middle of a battle? Did he know something that the rest of the Imperial Navy didn't?

6) How could any pilot shoot a missile into a 2 meter-wide exhaust port, let alone a pilot with no formal training, whose only claim to fame was his ability to "bullseye womprats" on Tatooine? This shot, according to one pilot, would be "impossible, even for a computer." Yet, according to additional evidence, the pilot who allegedly fired the missile turned off his targeting computer when he was supposedly firing the shot that destroyed the Death Star. Why have these discrepancies never been investigated, let alone explained?

7) Why has their been no investigation into evidence that the droids who provided the rebels with the Death Star plans were once owned by none other than Lord Vader himself, and were found, conveniently, by the pilot who destroyed the Death Star, and who is also believed to be Lord Vader's son? Evidence also shows that the droids were brought to one Ben Kenobi, who, records indicate, was Darth Vader's teacher many years earlier! Are all these personal connections between the conspirators and a key figure in the Imperial government supposed to be coincidences?

8) How could a single missile destroy a battle station the size of a moon? No records, anywhere, show that any battle station or capital ship has ever been destroyed by a single missile. Furthermore, analysis of the tape of the last moments of the Death Star show numerous small explosions along its surface, prior to it exploding completely! Why does all evidence indicate that strategically placed explosives, not a single missile, is what destroyed the Death Star?

United for Iran Global Day of Action photos

Here are my photos from the United for Iran Global Day of Action in San Francisco on July 25th. See more of my photos on Flickr.