Monday, 12 July 2010
Wednesday, 3 February 2010
Tuesday, 2 February 2010
Wednesday, 20 January 2010
Saturday, 16 January 2010
Errors on lens
Another type of aberration is coma, which derives its name from the comet-like appearance of the aberrated image. Coma occurs when an object off the optical axis of the lens is imaged, where rays pass through the lens at an angle to the axis θ. Rays which pass through the centre of the lens of focal length f are focused at a point with distance f tan θ from the axis.
Chromatic aberration is caused by the dispersion of the lens material—the variation of its refractive index, n, with the wavelength of light. Since, from the formulae above, f is dependent upon n, it follows that different wavelengths of light will be focused to different positions. It can be minimised by using an achromatic doublet (or achromat) in which two materials with differing dispersion are bonded together to form a single lens.
In film and photography, a prime lens is either a photographic lens whose focal length is fixed, as opposed to a zoom lens, or it is the primary lens in a combination lens system.
Confusion can sometimes result due to the two meanings of the term if the context does not make the interpretation clear. Alternative terms primary and fixed focal length or FFL are sometimes used to avoid ambiguity.
50 Principles of Composition in Photography
A book by an author
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photography tripod
wilton crescent mansions
Wilton Crescent
This is a different Wilton Lane and Wilton Crescent in the USA not the one in London that my blog focuses on. My blog focuses on the one in London but this is another one shown on you tube.
wilton crescent mansions blogspot
Sunday, 10 January 2010
Office Space to Rent Canary Wharf Canada Square
Friday, 8 January 2010
Kensington
Kensington is a district of West London, England within the Royal Borough of Kensington and Chelsea, located 2.8 miles (4.5 km) west of Charing Cross. An affluent and densely-populated area, its commercial heart is Kensington High Street and it contains the well-known museum district of South Kensington.
To the north, Kensington is bordered by Notting Hill; to the east, by Brompton and Knightsbridge; to the south, by Chelsea and Earl's Court; and to the west, by Hammersmith and Shepherd's Bush.
http://wiltoncrescentmansions.blogspot.com/Stucco
Pimlico
Pimlico is a small area of central London in the City of Westminster. Like Belgravia, to which it was built as a southern extension, Pimlico is known for its grand garden squares and impressive Regency architecture.
The area is separated from Belgravia to the north by Victoria Railway Station, and bounded by the River Thames to the south, Vauxhall Bridge Road to the east and the former Grosvenor Canal to the west.
At Pimlico's heart is a highly disciplined grid of residential streets laid down by the planner Thomas Cubitt beginning in 1825 and now protected as the Pimlico Conservation Area.Buckingham Palace
Buckingham Palace is the official London residence of the British monarch. Located in the City of Westminster, the palace is a setting for state occasions and royal hospitality. It has been a rallying point for the British people at times of national rejoicing and crisis.
Originally known as Buckingham House, the building which forms the core of today's palace was a large townhouse built for the Duke of Buckingham in 1703 on a site which had been in private ownership for at least 150 years. It was subsequently acquired by George III in 1761 as a private residence for Queen Charlotte, and known as "The Queen's House".Grosvenor Place
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Belgravia
wilton crescent mansions
Knightsbridge
The eponymous district comprises the areas immediately surrounding Knightsbridge (the road) on the north, Sloane Street to its junction with Pont Street, and Brompton Road to its junction with Beauchamp Place.
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Lowndes Square
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Wilton Crescent is a wealthy community in Belgravia, Knightsbridge, Kensington, London.
In the 19th and 20th century it was home to many prominent British politicians, ambassadors and civil servants. Louis Mountbatten, 1st Earl Mountbatten of Burma (1900 – 1979) lived at 2 Wilton Crescent for many years. Today there is a blue plaque on the house marking it. Like much of Belgravia, Wilton Crescent is characterised by grand terraces with lavish white houses which are built in a crescent shape, many of them with stuccoed balconies, particularly on the southern part of the crescent. The houses to the north of the crescent are stone clad and five stories high and were refaced between 1908 and 1912. Most of the houses had originally been built in the stucco style but such houses became stone clad during this renovation period. Other houses today have black iron balconies.
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