View allAll Photos Tagged shutter
Some of the windows have these, original to the house, built-in wood shutters. The complete set is in all three of these windows, I just opened a few to show them.
This is the shutter mechanism of my Seventy-Five. It was very gummed up and it stuck open half the time. I cleaned all the moving parts. I put some light oil on a few of the parts but nothing on the shutter leaves. Now it operates perfectly ever time.
Also, once I got it apart, I noticed that one of the wires connected to the flash contacts had broken at the solder point near the cocking arm. So I had to break out my solder gun. I hate heating up old solder because its probably lead but it had to be done.
contax g2
45mm f/2
kodak 400TX
ilfotec DD-X 1+4 7min@21C
This is what happens when the battery dies during exposure... I was really suprised when I saw this but then I realized that the shutter was stuck open while I was moving the camera trying to figure out what had happened.
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Shutter power module.
The external VS14s shutter need an 65V @4 ms pulse to close into 3.5ms. This powermodule make the 65V from the 7.2V battery. During camera focus adjusting, I need near 20V to close the shutter and 5V to hold the shutter open. This circuit has a fet to limit the 65V to 20V in adjust mode.
A lot of security functions are need, to drive the DC/DC convertor an AVR controller ATtiny26 is used.
This is a wireless remote shutter made from a $3 garage door opener from a corner in radioshack.
www.instructables.com/id/Super-Cheap-and-Easy-Wireless-Re...
Color_shutter_shema. The circuit is slightly more general. Some options must be not being assembled. The print can also be used for other purposes. I have all the components in stock. So I have nothing again purchases. I know there are many compact modules. But that does not matter too much. Making a PCB is only an hour's work. Simple, reliable, inexpensive and easy to prepare.
This is especially designed for the control of my voice-coil. Now we just have to finish the layout then etching and placing the components. The scheme has been determined by testing the shutter speed and vibration.
See:
www.flickr.com/photos/fotoopa_hs/16324620425/
www.flickr.com/photos/fotoopa_hs/16113947790
Last update 2 feb 2015, input type connectors changed to match with the basis board:
www.flickr.com/photos/fotoopa_hs/16229409668/
The Harris shutter effect combines different color layers from three successive shots to give colored ghosts to moving elements. This series of frames was taken hand-held as the surf broke on the shore and required alignment correction (I used Picturewindow pro).
Peruse the Rehoboth Beach Harris shutter effect project.
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So here's how it works:
> Turning the aperture ring raises the "Diaphragm Bar" behind the lens. At f/2.8 it's completely below the lens opening, and at f/22 it's just below the lens centerline.
> When the mirror rises, it drags this panel up with it; the odd shaped hole in the middle is the shutter opening. The mirror/shutter rises just as fast as its spring can whack it, and returns at the same speed as soon as it reaches the top.
> At f/2.8, the shutter is open for the entire distance of travel shown in green above - it takes about 1/60 second to cover this distance. But at f/22, with the DIaphragm Bar up where the purple line indicates, the shutter doesn't open until it reaches that line, and it closes as soon as it passes that line on the way down. The entire movement takes the same time as before, but the open time is only the time that it takes to travel the distance shown by the purple arrows. Assuming that the speed at f/2.8 was 1/60, this works out to about 1/500 second.
> The aperture at f/22 (and at all other settings except for f/2.8) is in the shape of a triangle with its point at the top - the top 2 sides are the edges of the "roof" part of the shutter opening, and the bottom side is provided by the Diaphragm bar.
It's actually just a little more complicated than this. In the above description, the f/22 opening is not centered on the same axis as the f/2.8 opening, and in fact if the Diaphragm Bar actually went as high as the purple line it would block off the center of the lens. So, in addition to all of the above, at the smaller apertures, the mirror/shutter is actually stopping its upward travel earlier than it does at full aperture. How does it do this? In the view of the Diaphragm Bar at www.flickr.com/photos/rick_oleson/53225547915/in/dateposted/, there is a second, gold colored bar that's coupled to the Diaphragm Bar, with a bent-up tab at its tip. As the Diaphragm Bar rises, this gold bar comes down - the tab at the end is the stop that the mirror strikes against to stop its upward travel. The two bars are coupled together so that the mirror's stopping position produces a centered triangular aperture opening at all settings. Dang.
Whoever did this will probably never be famous - but he was good.
Taken in Nancy, France.
Have a nice weekend everyone.
Wikipedia:
The earliest signs of human settlement in the area date back to 800 BC. Early settlers were likely attracted by easily mined iron ore and a ford in the Meurthe River. A small fortified town named Nanciacum (Nancy) was built by Gerard, Duke of Lorraine around 1050.
Nancy was burned in 1218 at the end of the War of Succession of Champagne, and conquered by Emperor Frederick II, then rebuilt in stone over the next few centuries as it grew in importance as the Capital of the Duchy of Lorraine. Charles the Bold, Duke of Burgundy, was defeated and killed in the Battle of Nancy in 1477.
With the death of the last Duke Stanislas in 1766, the duchy became a French province and Nancy remained its capital.
As unrest surfaced within the French armed forces during the French Revolution, a full-scale mutiny took place in Nancy in later summer of 1790 (see Nancy Affair). A few reliable units laid siege to the town and shot or imprisoned the mutineers.
In 1871, Nancy remained French when Prussia annexed Alsace-Lorraine. The flow of refugees reaching Nancy doubled its population in three decades. Artistic, academic, financial and industrial excellence flourished, establishing what is still the Capital of Lorraine's trademark to this day.
Nancy was freed from Nazi Germany by the U.S. Third Army in September 1944, during the Lorraine Campaign of World War II (see Battle of Nancy (1944)).
In 1988, Pope John Paul II visited Nancy. In 2005, French President Jacques Chirac, German Chancellor Gerhard Schröder and Polish President Aleksander Kwaśniewski inaugurated the renovated Place Stanislas.