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DescriptionSt Nicholas church Landwade Suffolk (2921705228).jpg |
HDR. AEB +/-3 total of 7 exposures processed with Photomatix. Landwade was probably not originally formally a separate parish, but it came to be accepted as one from the mid 15th century, perhaps through having its own church; it never had an incumbent of its own, but only curates appointed by various authorities. In 1279 a chapel at Landwade, linked to the rectory of St. Andrew's at Burwell, was in the possession of the prior of Fordham through the gift of Robert of Hastings, made in the early 13th century. (fn. 1) The chapel may have been served by canons from Fordham in the later Middle Ages. (fn. 2) In 1535 it was attached to Burwell rectory, but in 1540 a portion of the tithes was being paid to Exning. (fn. 3) In 1637 it was still officially attached to Burwell, but 'the hamlet (had) quite slipt out of all jurisdiction ecclesiastical'. (fn. 4) In 1763 it was annexed to the vicarage of St. Martin's, Exning (Suff.). (fn. 5) The parish appears to have been attached to St. Martin's in the 19th century, but on occasion the vicar of Burwell was responsible for conducting services. Since 1895 the parish has been attached to St. Martin's and St. Philip's, Exning. (fn. 6) In 1540 the chapel's annual income, including the tithes, was 26s. 6d. (fn. 7) In 1548 the curate at Landwade enjoyed the right to the tithes 'except such part as ought to be paid to the parsonage of Exning'. (fn. 8) In 1650, because the greatest part of the great and small tithes paid by the parishioners of Landwade passed to churches at Fordham and Burwell, the curate only received an income of £4 16s., and the parishioners petitioned for the right to pay the tithes to their own curate. (fn. 9) Chaplains who served at Landwade may not have had any substantial revenues apart from alms from the lord of the manor. From 1707 until 1808 the vicar of Burwell had responsibility for Landwade; in 1808 he received a small stipend from Sir Charles Cotton, in whom all the tithes were vested. (fn. 10) In 1833 the vicar of Burwell received £20 for conducting services at Landwade chapel from Sir St. Vincent Cotton. (fn. 11) In 1912 the Ecclesiastical Commissioners paid the vicar of St. Martin's and St. Philip's, Exning, £3 13s. 10d. for his duties in Landwade. (fn. 12) In 1833 the vicar of Burwell held one Sunday service every three weeks at Landwade chapel. (fn. 13) As long as Landwade Hall was occupied by members of the Cotton family, services probably continued to be held occasionally, but after 1854 the inhabitants may have been expected to attend Sunday services at St. Martin's church, Exning. In 1863 Landwade church had not been open for worship for a number of years, and it was not until 1883 that services were again provided, when a fellow of St. Catherine's College, Cambridge, held a service on the first Sunday afternoon in each month, and on every Thursday evening. By 1896 the vicar of St. Martin's and St. Philip's in Exning was conducting services on alternate Sunday afternoons, and on every Thursday evening. In the interwar years, however, services were only held on alternate Sundays during the summer months by the vicar of Exning. In 1999 services were held once a month on Sundays during the summer months. The church has been dedicated to ST. Nicholas since at least c. 1445. The existing church, which is 250 m. north of the modern Landwade Hall but only 5 m. west of the remains of the medieval manorial moat, was apparently built as a private chapel by Walter Cotton c. 1445, and has remained virtually unaltered. In 1912 the principal landowner was still responsible for the upkeep of the church, with £74 being invested for that purpose. (fn. 14) In the late 20th century grants from charitable trusts have helped to keep the church in good order. Built of coursed flint and partially rendered, it has north and south transeptal chapels of the same length as the chancel, an aisleless nave with south porch, and a low, two-stage west tower. (fn. 15) There is no structural division between the nave and chancel, but the church retains its original five-light traceried screen, which is placed between the two bays of the chapel arcades. These have multiple chamfered orders on compound piers with high bases rising just above the tops of the poppy-headed benches. The east chancel window has three transomed lights with cusped ogee heads to the upper lights. The nave and chapel windows have a simpler two-light design, except for the east window of the north chapel which has three cusped lights in a fourcentred head; it appears to be an addition, perhaps of the early 16th century. All of the original 15th-century glass was apparently removed in the 19th century, but twelve panels mostly figures of saints were returned and reset in the nave windows in 1926-7. The roof, which is also 15th-century, has braced principals supported on carved head-corbels and is ceiled between the principals and above the collars. The churchyard wall, which is of early brick, may be contemporary with the church. In 1637 the church was in a poor condition: the roof was decayed, and the bells had been sold. (fn. 16) In the early 18th century, however, a new altar table and plain reredos were installed. In 1796 the west face of the tower, which had partially collapsed, was repaired with large brick buttresses and new windows. The church contains several monuments of the Cottons erected between the 15th century and the early 18th. (fn. 17) In the chancel are three anonymous altar tombs, the plainest in the centre, the others in the eastern corners. That to the south-east, probably of c. 1500, the most elaborate with quatrefoils on its tombchest below a flattened arch over the indents of lost brasses and brattishing above, considerably resembles the earliest, also anonymous, in the south chapel. The north chapel contains the sixposter monument of Sir John Cotton (d. 1593) with reclining figures and heavy strapwork along the top. The south transept accommodates the next three generations: Sir John Cotton (d. 1620) and Sir John (d. 1689) both have halfreclining figures in armour below round arches under broken pediments containing achievements of arms and supported on Corinthian columns, the earlier pediment segmental, the later straight with floral volutes; Sir John (d. 1620) looks down on his reclining wife; Sir John (d. 1693) is alone on his bulky monument with two putti above. Both monuments are surrounded by their original railings. Sir John (d. 1789) and his wife are chastely commemorated in marble by a double portrait medallion supported by weeping putti before an obelisk. <a href="http://www.british-history.ac.uk/vch/cambs/vol10/pp474-475" rel="nofollow">www.british-history.ac.uk/vch/cambs/vol10/pp474-475</a> High-dynamic-range imaging (HDRI) is a high dynamic range (HDR) technique used in imaging and photography to reproduce a greater dynamic range of luminosity than is possible with standard digital imaging or photographic techniques. The aim is to present a similar range of luminance to that experienced through the human visual system. The human eye, through adaptation of the iris and other methods, adjusts constantly to adapt to a broad range of luminance present in the environment. The brain continuously interprets this information so that a viewer can see in a wide range of light conditions. HDR images can represent a greater range of luminance levels than can be achieved using more 'traditional' methods, such as many real-world scenes containing very bright, direct sunlight to extreme shade, or very faint nebulae. This is often achieved by capturing and then combining several different, narrower range, exposures of the same subject matter. Non-HDR cameras take photographs with a limited exposure range, referred to as LDR, resulting in the loss of detail in highlights or shadows. The two primary types of HDR images are computer renderings and images resulting from merging multiple low-dynamic-range (LDR) or standard-dynamic-range (SDR) photographs. HDR images can also be acquired using special image sensors, such as an oversampled binary image sensor. Due to the limitations of printing and display contrast, the extended luminosity range of an HDR image has to be compressed to be made visible. The method of rendering an HDR image to a standard monitor or printing device is called tone mapping. This method reduces the overall contrast of an HDR image to facilitate display on devices or printouts with lower dynamic range, and can be applied to produce images with preserved local contrast (or exaggerated for artistic effect). In photography, dynamic range is measured in exposure value (EV) differences (known as stops). An increase of one EV, or 'one stop', represents a doubling of the amount of light. Conversely, a decrease of one EV represents a halving of the amount of light. Therefore, revealing detail in the darkest of shadows requires high exposures, while preserving detail in very bright situations requires very low exposures. Most cameras cannot provide this range of exposure values within a single exposure, due to their low dynamic range. High-dynamic-range photographs are generally achieved by capturing multiple standard-exposure images, often using exposure bracketing, and then later merging them into a single HDR image, usually within a photo manipulation program). Digital images are often encoded in a camera's raw image format, because 8-bit JPEG encoding does not offer a wide enough range of values to allow fine transitions (and regarding HDR, later introduces undesirable effects due to lossy compression). Any camera that allows manual exposure control can make images for HDR work, although one equipped with auto exposure bracketing (AEB) is far better suited. Images from film cameras are less suitable as they often must first be digitized, so that they can later be processed using software HDR methods. In most imaging devices, the degree of exposure to light applied to the active element (be it film or CCD) can be altered in one of two ways: by either increasing/decreasing the size of the aperture or by increasing/decreasing the time of each exposure. Exposure variation in an HDR set is only done by altering the exposure time and not the aperture size; this is because altering the aperture size also affects the depth of field and so the resultant multiple images would be quite different, preventing their final combination into a single HDR image. An important limitation for HDR photography is that any movement between successive images will impede or prevent success in combining them afterwards. Also, as one must create several images (often three or five and sometimes more) to obtain the desired luminance range, such a full 'set' of images takes extra time. HDR photographers have developed calculation methods and techniques to partially overcome these problems, but the use of a sturdy tripod is, at least, advised. Some cameras have an auto exposure bracketing (AEB) feature with a far greater dynamic range than others, from the 3 EV of the Canon EOS 40D, to the 18 EV of the Canon EOS-1D Mark II. As the popularity of this imaging method grows, several camera manufactures are now offering built-in HDR features. For example, the Pentax K-7 DSLR has an HDR mode that captures an HDR image and outputs (only) a tone mapped JPEG file. The Canon PowerShot G12, Canon PowerShot S95 and Canon PowerShot S100 offer similar features in a smaller format.. Nikon's approach is called 'Active D-Lighting' which applies exposure compensation and tone mapping to the image as it comes from the sensor, with the accent being on retaing a realistic effect . Some smartphones provide HDR modes, and most mobile platforms have apps that provide HDR picture taking. Camera characteristics such as gamma curves, sensor resolution, noise, photometric calibration and color calibration affect resulting high-dynamic-range images. Color film negatives and slides consist of multiple film layers that respond to light differently. As a consequence, transparent originals (especially positive slides) feature a very high dynamic range Tone mapping Tone mapping reduces the dynamic range, or contrast ratio, of an entire image while retaining localized contrast. Although it is a distinct operation, tone mapping is often applied to HDRI files by the same software package. Several software applications are available on the PC, Mac and Linux platforms for producing HDR files and tone mapped images. Notable titles include Adobe Photoshop Aurora HDR Dynamic Photo HDR HDR Efex Pro HDR PhotoStudio Luminance HDR MagicRaw Oloneo PhotoEngine Photomatix Pro PTGui Information stored in high-dynamic-range images typically corresponds to the physical values of luminance or radiance that can be observed in the real world. This is different from traditional digital images, which represent colors as they should appear on a monitor or a paper print. Therefore, HDR image formats are often called scene-referred, in contrast to traditional digital images, which are device-referred or output-referred. Furthermore, traditional images are usually encoded for the human visual system (maximizing the visual information stored in the fixed number of bits), which is usually called gamma encoding or gamma correction. The values stored for HDR images are often gamma compressed (power law) or logarithmically encoded, or floating-point linear values, since fixed-point linear encodings are increasingly inefficient over higher dynamic ranges. HDR images often don't use fixed ranges per color channel—other than traditional images—to represent many more colors over a much wider dynamic range. For that purpose, they don't use integer values to represent the single color channels (e.g., 0-255 in an 8 bit per pixel interval for red, green and blue) but instead use a floating point representation. Common are 16-bit (half precision) or 32-bit floating point numbers to represent HDR pixels. However, when the appropriate transfer function is used, HDR pixels for some applications can be represented with a color depth that has as few as 10–12 bits for luminance and 8 bits for chrominance without introducing any visible quantization artifacts. History of HDR photography The idea of using several exposures to adequately reproduce a too-extreme range of luminance was pioneered as early as the 1850s by Gustave Le Gray to render seascapes showing both the sky and the sea. Such rendering was impossible at the time using standard methods, as the luminosity range was too extreme. Le Gray used one negative for the sky, and another one with a longer exposure for the sea, and combined the two into one picture in positive. Mid 20th century Manual tone mapping was accomplished by dodging and burning – selectively increasing or decreasing the exposure of regions of the photograph to yield better tonality reproduction. This was effective because the dynamic range of the negative is significantly higher than would be available on the finished positive paper print when that is exposed via the negative in a uniform manner. An excellent example is the photograph Schweitzer at the Lamp by W. Eugene Smith, from his 1954 photo essay A Man of Mercy on Dr. Albert Schweitzer and his humanitarian work in French Equatorial Africa. The image took 5 days to reproduce the tonal range of the scene, which ranges from a bright lamp (relative to the scene) to a dark shadow. Ansel Adams elevated dodging and burning to an art form. Many of his famous prints were manipulated in the darkroom with these two methods. Adams wrote a comprehensive book on producing prints called The Print, which prominently features dodging and burning, in the context of his Zone System. With the advent of color photography, tone mapping in the darkroom was no longer possible due to the specific timing needed during the developing process of color film. Photographers looked to film manufacturers to design new film stocks with improved response, or continued to shoot in black and white to use tone mapping methods. Color film capable of directly recording high-dynamic-range images was developed by Charles Wyckoff and EG&G "in the course of a contract with the Department of the Air Force". This XR film had three emulsion layers, an upper layer having an ASA speed rating of 400, a middle layer with an intermediate rating, and a lower layer with an ASA rating of 0.004. The film was processed in a manner similar to color films, and each layer produced a different color. The dynamic range of this extended range film has been estimated as 1:108. It has been used to photograph nuclear explosions, for astronomical photography, for spectrographic research, and for medical imaging. Wyckoff's detailed pictures of nuclear explosions appeared on the cover of Life magazine in the mid-1950s. Late 20th century Georges Cornuéjols and licensees of his patents (Brdi, Hymatom) introduced the principle of HDR video image, in 1986, by interposing a matricial LCD screen in front of the camera's image sensor, increasing the sensors dynamic by five stops. The concept of neighborhood tone mapping was applied to video cameras by a group from the Technion in Israel led by Dr. Oliver Hilsenrath and Prof. Y.Y.Zeevi who filed for a patent on this concept in 1988. In February and April 1990, Georges Cornuéjols introduced the first real-time HDR camera that combined two images captured by a sensor3435 or simultaneously3637 by two sensors of the camera. This process is known as bracketing used for a video stream. In 1991, the first commercial video camera was introduced that performed real-time capturing of multiple images with different exposures, and producing an HDR video image, by Hymatom, licensee of Georges Cornuéjols. Also in 1991, Georges Cornuéjols introduced the HDR+ image principle by non-linear accumulation of images to increase the sensitivity of the camera: for low-light environments, several successive images are accumulated, thus increasing the signal to noise ratio. In 1993, another commercial medical camera producing an HDR video image, by the Technion. Modern HDR imaging uses a completely different approach, based on making a high-dynamic-range luminance or light map using only global image operations (across the entire image), and then tone mapping the result. Global HDR was first introduced in 19931 resulting in a mathematical theory of differently exposed pictures of the same subject matter that was published in 1995 by Steve Mann and Rosalind Picard. On October 28, 1998, Ben Sarao created one of the first nighttime HDR+G (High Dynamic Range + Graphic image)of STS-95 on the launch pad at NASA's Kennedy Space Center. It consisted of four film images of the shuttle at night that were digitally composited with additional digital graphic elements. The image was first exhibited at NASA Headquarters Great Hall, Washington DC in 1999 and then published in Hasselblad Forum, Issue 3 1993, Volume 35 ISSN 0282-5449. The advent of consumer digital cameras produced a new demand for HDR imaging to improve the light response of digital camera sensors, which had a much smaller dynamic range than film. Steve Mann developed and patented the global-HDR method for producing digital images having extended dynamic range at the MIT Media Laboratory. Mann's method involved a two-step procedure: (1) generate one floating point image array by global-only image operations (operations that affect all pixels identically, without regard to their local neighborhoods); and then (2) convert this image array, using local neighborhood processing (tone-remapping, etc.), into an HDR image. The image array generated by the first step of Mann's process is called a lightspace image, lightspace picture, or radiance map. Another benefit of global-HDR imaging is that it provides access to the intermediate light or radiance map, which has been used for computer vision, and other image processing operations. 21st century In 2005, Adobe Systems introduced several new features in Photoshop CS2 including Merge to HDR, 32 bit floating point image support, and HDR tone mapping. On June 30, 2016, Microsoft added support for the digital compositing of HDR images to Windows 10 using the Universal Windows Platform. HDR sensors Modern CMOS image sensors can often capture a high dynamic range from a single exposure. The wide dynamic range of the captured image is non-linearly compressed into a smaller dynamic range electronic representation. However, with proper processing, the information from a single exposure can be used to create an HDR image. Such HDR imaging is used in extreme dynamic range applications like welding or automotive work. Some other cameras designed for use in security applications can automatically provide two or more images for each frame, with changing exposure. For example, a sensor for 30fps video will give out 60fps with the odd frames at a short exposure time and the even frames at a longer exposure time. Some of the sensor may even combine the two images on-chip so that a wider dynamic range without in-pixel compression is directly available to the user for display or processing. <a href="https://en.wiki.x.io/wiki/High-dynamic-range_imaging" rel="nofollow">en.wiki.x.io/wiki/High-dynamic-range_imaging</a> |
Date | |
Source | St Nicholas church Landwade Suffolk |
Author | David from Colorado Springs, United States |
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This image was originally posted to Flickr by Brokentaco at https://flickr.com/photos/92024986@N00/2921705228 (archive). It was reviewed on 14 August 2018 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
14 August 2018
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26 September 2008
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current | 19:49, 14 August 2018 | ![]() | 1,600 × 1,035 (346 KB) | Tm | Transferred from Flickr via #flickr2commons |
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Camera model | Canon EOS 40D |
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Exposure time | 1/16 sec (0.0625) |
F-number | f/8 |
ISO speed rating | 100 |
Date and time of data generation | 09:55, 26 September 2008 |
Lens focal length | 18 mm |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | Adobe Photoshop Elements 6.0 Windows |
File change date and time | 17:19, 6 October 2008 |
Color space | Uncalibrated |