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From the Paul Graney Collection. This is Graney's pocket sized photographic handbook and diary 1939.
The museum has a good collection of mechanical and electronic calculators, some of which are presented here
The Kebab & Calculator (also known as the Westbury Park Tavern), Henleaze, Bristol. This was "The Young Ones" local pub although it was called "The Cock O'the North" back in 1982 when filming was done. Also, Madness played inside the pub during one of the episodes. With the sad recent passing away of Rik Mayall I wanted to go here again and raise a glass to a comedy hero. Cheers for the laughs mate......!
A canon calculator and a pile of English pound notes and coins..
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Inequality calculator Inequality Calculator is an online tool to find the value of X is greater or less than to a certain value. It is a tool which makes calculations easy and fun. If two inequality equations are given, then it can easily solve that inequality equation.Isolate the given variable by using inverse-operation and then solve for that variable.
account on board. You are allowed to use this image on your website. If you do, please link back to my site as the source: creditscoregeek.com/
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Mike Cohen
I have about 30 Lloyd's calculators in my collection. My 5 year old son Lloyd has claimed half of them ... so here are three that I keep in my collection at the office. The 650 (far right) was Lloyd's most advanced scientific calculator - was quite sophisticated for it's day. I love the retro brushed aluminium look.
A dusty calculator at my sister's computer desk.
I was at my sister's house yesterday evening and her camera has auto bracketing. I took some photos and brought them home with me last night and put them together. I really like the auto bracketing feature because you don't have to manually change the exposure for each shot you take. Very nice.
Home-made exposure calculator, made on the back of an old slide-rule, with labels and marks.
Primarily intended for large-format and pinhole photography, it's not just a sunny-16 calculator like many of us once made at school. The idea is that it helps translates exposure measurements from a digital camera working at one particular ISO to a different manual camera at a different ISO. There is also provision for incorporation of filter factors and bellows factors. If necessary, it can always be turned over and used as a conventional slide rule too!
Usage:
1. For basic sunny-16 use, set the ISO being used against the weather symbol on the right hand scale. Read the exposure off the left hand scale. Either top or bottom scale may be used. The shutter speeds and f numbers go from a generous 1/8000sec to 2min and f/1 to f/3000 to cater for almost any camera. The top scale is most likely best for digital or 35mm cameras whereas the bottom scale is designed for large format and pinholes.
2. With access to a digital camera, or light meter, set the measured exposure on the left hand scale. Now "correct it" by putting the marker on the ISO used to make this measurement on the right hand scale. Move the middle slider so that the actual ISO that will be used to take the picture is under the marker. Read off the new exposure on left hand scale. A generous range of ISOs from 3200 to 0.2 and from 4000 to 1/4 are provided for almost any film. (I *do* often use ISO 1 or 2.)
3. For correction of filter factors or alteration by -1 to 4 stops, with the exposure set as above, put the marker at stop 0 or factor 1 and move the slider so the marker is above the required factor. Read the exposure as usual on left.
4. For bellows extension factors, set exposure as normal. Measure bellows extension with tape measure, put marker on focal length of lens, and move middle slider to the actual extension used. (I designed the three scales here for my three LF lenses. It's easy to calculate the values for other lenses.)
Corrections 2,3,4 can be made in any order, so if you take several pictures with different films and the same filtration and bellows extension, it may save time to do the ISO correction in 2 last (keeping the marker in the same place).
Attendees can participate in live demonstrations of newly-released products at WTS19, including this demonstration of NTEA’s Vehicle Center of Gravity & Axle Weight Calculator and the TruckScience cloud-based calculator (offers enhanced features for advanced applications).
Learn more at www.worktruckshow.com.
Sue keeps forgetting that she's already taken a calculator from work. (Don't worry, she returned them.)
government on board. You are allowed to use this image on your website. If you do, please link back to my site as the source: creditscoregeek.com/
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Mike Cohen