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Agfa Optima 200 Sensor (second version).
German viewfinder camera produced c.1969.
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So this is how the Exposure Value is automaticly determined on this camera.
The amount of light on the Selenium Cell drives the Meter. Right after pressing the Shutter Release Button the Needle of the Meter is clamped in a Stepped Trap.
The amount of degrees the Stepped Trap has to rotate before it clamps the Needle determines the Exposure Value for the interface to the Shutter.
btw That headpin is my own idea to set the Needle as the Selenium Cell did not work anymore.
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WARNING :
This image is intended as a reference for the more experienced camera service man. If you have no experience in camera repair please do yourself a favor and send your camera to a professional service shop. It would be a pity to lose a vintage camera in a failed repair attempt !
Timings are ready now. The table show the values between 1/256 power and full power. Using the Puls LA timings for driving the TTL mode gives the right output power.
On the LA you see the X and Q signals. X signal is here 15 usec width and Q signal 25 usec. The delay value between the X and the Q signal define the correct output power.
The X signal need to be more then 10 usec or the flash d'nt works. Large puls is not critical.
I've tested the recovery time, this is the time to start a second flash cycle. This critical time is for this SB-80-DX near 40 msec. This means that only near 50 msec a second flashpuls can be generated. For my waterfigures I need pulses between 1 and 5 msec. So I need 2 different flashes if I will use this option.
For wireless control you have to setup first the powerlevel remote via a protocol.
There after you can give via the RFM12B module a command to fire the flashes. In case of SC-27 Nikon cable (remote TTL cable) you only need to give the X and Q puls at the right time.
Very easy, and lowcost central remote control of all your flashes!
For the connection signals see: www.flickr.com/photos/fotoopa_hs/3715377259/
Photo of the setup: www.flickr.com/photos/fotoopa_hs/3709619306/in/photostream/
Remote delay RFM12B at max baudratespeed and optimal syncmethode see: www.flickr.com/photos/fotoopa_hs/3762346539/in/set-721576...
I build a prototype Master with the RFM12B wireless module. The master can also drive local 3 flashes in TTL mode and have an extra LCD display of 2x16 char. The master transmit also the signals to the slave ( slave have 4 flash outputs in TTL mode). Master and slave flash signals are so calculated that all the flash powers are centrered even if the powers are different. This is very important for very highspeed systems. If flashes are not centrered blur into the highspeed capture may happen.
For shema and layout of components see:
www.flickr.com/photos/fotoopa_hs/3896289984/in/set-721576...
Most of the parts are now soldered on a board to put into a nice box. Within a few days the hole unit will be ready. Picture will be follow.
Update 2009 Sep 21:
new timings are added for the SB-29-S ringflash and some others are updated. The new results stay on:
Benedictine sisters to shutter midtown monastery
By Johanna Willett Arizona Daily Star
20160927
For about 75 years, the Benedictine Sisters of Perpetual Adoration have called the monastery at 800 N. Country Club Road home.
But no more.
This past weekend, the sisters announced to volunteers, benefactors and other friends that the monastery will shut its doors within the next two years.
“It was a difficult decision to come to, but it has to do with basically a fewer number of sisters today and the fact that everyone is aging,” said Sister Joan Ridley, superior of the Tucson Monastery. “We don’t have many newer members, so we want to regroup forces and consolidate sisters in one spot.”
The 16 Tucson sisters are part of a larger congregation based in Clyde, Missouri. Including the Tucson nuns, there are about 65 sisters, Ridley said.
Leadership at both sites has worked toward this decision for about a year with the hope that consolidation will revitalize the aging order.
The decision is still too new for the sisters to say for sure whether all will leave Tucson for Clyde. Some of the nuns have lived here for about 25 years, Ridley said.
Stay or go, they will all have to develop a few new habits. The sisters plan to sell the property, which is about 7 acres between East Speedway and East Fifth Street.
“We may be in touch with some other national Catholic organizations that purchase property and convert it to senior housing or things like that,” Ridley said. “Our first desire is that it would be used for the good of seniors and stay within the religious tradition.”
The Tucson convent’s history as documented on its website begins in 1935 with an invitation from Diocese of Tucson Bishop Daniel Gercke to the Benedictine Sisters of Perpetual Adoration. Until the completion of the Tucson Monastery in 1940, the sisters lived in the Steinfeld Mansion , 300 N. Main Ave. Architect Roy Place designed the current monastery.
“The Benedictine Sisters have been a blessing and gift in our community since 1935,” said Bishop Gerald Kicanas of the Diocese of Tucson in a prepared statement. “They have held us in prayer and opened their home to us all. … They cannot imagine the impact they have had on us, not just as Catholics but all in our community.”
Valencia orange and date palm trees dot the property, along with an ancient avocado tree that Ridley suspects is one of the oldest in Tucson.
The sisters sell soaps, salves and lotions and make liturgical vestments, or clothing.
Every day, the monastery holds four services in its chapel, along with Mass on Sunday.
“We’re very sad,” Ridley said. “It’s a real loss to the city of Tucson and the people that we have grown to love and who love us.”
Contact reporter Johanna Willett at jwillett@tucson.com or 573-4357. On Twitter: @JohannaWillett
I made the card for, errr... valentines day and posted this photo of it on b3ta... then it went viral. I did give it to someone and the guys in the office gave a few out too.
For those not in the know, Tesco is one of the major supermarket chains in the UK. They have 'Tesco value' branded low-cost merchandise. The idea for this card, which is a parody/satirical swipe at the commercialism of valentines etc, was copied by Asda (Walmart) for a PR stunt in the UK.
Around every 14th Feb this image will appear in newspapers and magazines in the UK - I wish they wouldn't do that.
1. This is value because of the many shades of blue found in the sky and on the mountain
2. The subject is the clock tower and the mountain behind
3.The most visually striking this in this image is the large scale the mountains have
4. If I were to change this I would crop differently or zoom more
Photo by CafeCredit under CC 2.0
You can use this photo for FREE under Creative Commons license. Make sure to give proper author attribution to www.cafecredit.com.
Thank you for respecting Creative Commons license.
P.S. Need more photos like this? Check out my flickr profile page.
In 2010 PM David Cameron said :
"The differences in child outcomes
between a child born in poverty
and a child born in wealth
are no longer statistically significant
when both have been raised
by confident and able parents."
Is he simply mad, or barking mad?
True Value, Shop Rite Hardware and Paint Supply, Silas Deane Hwy Wethersfield, CT, Pics by Mike Mozart , AKA MiMo on Instagram instagram.com/MikeMozart
Paul Bulcke visits a school close to our new plant in Karnataka, India. Nestlé works with local government in the region to provide clean drinking water and sanitation facilities to village schools
yes...you may notice I am missing 4 squares. That is because it's a bit bigger than I had originally planned, and so the 'spares' have been used up.
More Hasbro - Star Wars 5 Inch "Value" Figures:
The Force Awakens - First Order Snowtrooper
The Mandalorian: The Mandalorian & The Child
I don't believe I've ever seen someone cosplay Fester and Debbie from Addams Family Values. They cracked me up without even saying a word.
In the session, Big Data, Big Stories - Putting a Value on Marine Life, Ralph Chami and Joe Roman discussed the benefits of marine life giving back to the earth and the session took place at the IMF Headquarters during the 2019 IMF/World Bank Annual Meetings, October 18, 2019 in Washington, DC. IMF Photograph/Stefani Reynolds
Very Old machine it is one of the effects of the English colonization of Egypt
Are currently in one of the old houses whos owned by one of the very poor Egyptians in a very very poor area.
The most IMPORTANT ISSUE is that no one knows its there and no one knows the value of this ...ARCHEOLOGICAL...MACHINE...
...UNTIL NOW !!!
...IMAGINE THAT ...?!?!?!