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	Understanding resolution and MTF curves: introduction
		MTF is the spatial frequency response of an imaging system or a component; it is the contrast at a given spatial frequency relative to low frequencies.
		An MTF of 9% is implied in the definition of the Rayleigh diffraction limit.
		Lectures 17 and 18 on MTF and imaging microstructure are particularly interresting.
	www.normankoren.com /Tutorials/MTF.html (3094 words)

	HDTV Magazine Articles: HDTV and MTF - Why Projection HDTV Displays Can Never Be As Good (Site not responding. Last check: 2007-11-04)
		MTF is not a measurement of light frequencies (i.e.
		MTF is measured as a percentage of optimum contrast transfer.
		An MTF of 50% means half of the transfer contrast is lost at a specified contrast variance rate (frequency).
	www.hdtvmagazine.com /articles/2005/10/hdtv_and_mtf_-.php (817 words)

	MTF
		The relative contrast RC is an extra to the usual MTF graph form in the "Aperture" software from Harold Suiter; it shows better the contrast differential between aberrated (dotted) and perfect aperture (dashed), in units of the perfect aperture contrast level c* normalized to 1 for all frequencies.
		Resolution-wise, the MTF is nearly identical to the empirical Daves' limit in double star observing.
		Still, despite the MTF being standardized to a single object form sample and brightness level, it is considered to be a reliable general indicator of the effect of wavefront aberrations - or any other factor affecting wave interference in the focal zone - on image quality.
	www.telescope-optics.net /mtf.htm (921 words)

	Beyond the MTF (Site not responding. Last check: 2007-11-04)
		Although an MTF chart can represent the response of a lens at a wide range of focus distances, the variation of lens performance across this range is not typically reported.
		The degradation of the MTF near the image edge, therefore, will be a function of both the actual performance of the optics and the amount that the lens is out-of-focus due to field curvature towards the edge.
		The MTF is a tool that is useful within its constraints, but we should strive to articulate our observations that extend beyond the MTF and allow us to fully assess the real world performance of the lenses that we use.
	contaxg.com /archive/articles/beyond_the_mtf.htm (2361 words)

	READING MTF CURVES
		Radial MTF curves are based on sinusoidal waves that go perpendicularly to the sagittal ones, just imagine them in a very small portion of the image in which sections of circles of sagittal waves are almost straight lines.
		MTF is measured in the lens focal plane, of course.
		First: an MTF graph is not a single merit figure or a meaningless reduction of the optical quality of a lens to one single parameter.
	medfmt.8k.com /mf/mtfuse.html (2189 words)

	MTF- Bulletins & Releases
		MTF calls on state policy makers to take advantage of the need for extraordinary solutions to the fiscal crisis and seize the best opportunity in years to undertake important reforms of state government.
		MTF proposes tighter standards for using the Commonwealth’s rainy day fund, ensuring that the fund is tapped only if deteriorating economic conditions cause a significant drop in state revenue growth.
		News Release: MTF strongly endorses the Central Artery and capital finance plan released by legislative leaders today, which includes the best elements of proposals by the House, Senate and administration, and is based on the fundamental principles suggested by the Foundation.
	www.masstaxpayers.org /bulletins.html (4081 words)

	MTF
		MTF on the other hand is the terminology that lens designers use, and which you need to come to terms with if you really want to understand how to describe the complex interaction between resolution and contrast.
		Above are the MTFs of two of Canon's finest fast prime lenses, arguably among the finest lenses available of their respective focal lengths.
		Canon's MTF charts are based on theoretical calculations used in the design of the lens, while some other manufacturers use actually measurements.
	www.luminous-landscape.com /tutorials/understanding-series/understanding-mtf.shtml (1789 words)

	Magnetized Target Fusion (Site not responding. Last check: 2007-11-04)
		MTF is intermediate between magnetic confinement and inertial confinement fusion (ICF) in time and density scales.
		For MTF, the issues are: formation of a long-lived (~ 10 microsecond) target plasma, compatibility of the formation scheme with an implosion geometry, symmetry of the implosion, prevention of metal-plasma "mix", and actual plasma transport losses to the nearby moving-metal-wall.
		MTF involves complex liner-on-plasma experiments which exercise nearly all the theoretical and experimental skills necessary for preservation of nuclear weapons design and testing capabilities, in a scientifically exciting and challenging endeavor.
	wsx.lanl.gov /mtf.html (1243 words)

	Resolution, contrast, MTF
		This MTF diagram is not the same as the ones we present when testing lenses.
		The diagrams we are presenting along with the tested lenses show the MTF value at three line frequencies but for the entire picture, from the centre (far left on the X-axis) to the corners (furthest right on the X-axis).
		When measuring the MTF of a lens, we set the focus in the middle of the frame and measure the MTF all the way to the corners of the negative without re-focusing.
	www.nikonlinks.com /~nicke/photo/lenstest/photodo/mtf.html (2560 words)

	MTF Engineering
		The MTF of the device is then the ratio of these modulation values divided by the values obtained from the photoelectric scan.
		According to mathematical theory, the MTF of an optical device is equivalent to the Fourier transform of its spread function.
		The system MTF is then determined using only the modulation of the fundamental frequency in our microdensitometer readout (that is the coefficient for cos x, and not the peak to peak modulation).
	www.sinepatterns.com /S_EngNts.htm (4019 words)

	Imatest - Sharpness
		For this lens, MTF is 50% at 61 lp/mm and 10% at 183 lp/mm.
		MTF is related to edge response by a mathematical operation known as the Fourier transform.
		MTF is the Fourier transform of the impulse response— the response to a narrow line, which is the derivative (d/dx) of the edge response.
	www.imatest.com /docs/sharpness.html (3218 words)

	MTF and SQF - Bob Atkins Photography
		When the light and dark areas are large, this doesn't have a big effect (the MTF is still quite high), but when the dark and light areas are small even a small amount of light spread causes a significant drop in MTF.
		When plotting MTF as a function of the pattern spacing, for a bar pattern the horizontal axis is in units of line pairs per mm while for a sine wave pattern the horizontal axis is in units of cycles per mm, but often this distinction is overlooked.
		This is because MTF depends on the wavelength of the light used.
	www.bobatkins.com /photography/technical/mtf/mtf1.html (881 words)

	MTF and SQF - Bob Atkins Photography
		What this means is that when you view a print from that distance, which would be typical for close viewing, the MTF at around 1 cycle/mm in the print would have the most influence on whether you thought the print was sharp or not.
		Grainger then developed a model, which basically states that the subjective sharpness of a print corresponds to the area under the MTF curve between the spatial frequencies of (0.5 x magnification) and (2 x magnification) when spatial frequency is plotted on a logarithmic scale.
		The MTF is plotted for a "perfect" f2.8 lens (diffraction limited, no aberrations), a real f2.8 lens operating wide open (blue trace) and that same lens stopped down to f8 (brown trace).
	www.bobatkins.com /photography/technical/mtf/mtf4.html (789 words)

	Scanners and sharpening: resolution and MTF
		Many refused to publish MTF data of their lenses arguing that it is not as easy as it appears to correctly interpret MTF curves.
		Today, with the majority of lens manufacturers and many photo magazines publishing MTF curves or similar representations to demonstrate the performance level of camera lenses, we often encounter cases where the curves are misinterpreted by enthusiasts quite grossly.
		The MTF curves that Carl Zeiss publishes, are all measured curves of the first units actually built – not just calculated plots without information about how well they may be executed by the manufacturer.
	www.normankoren.com /Tutorials/MTF2.html (5419 words)

	Pseudo-MTF Tester Project
		MTF testing is very useful, but it is somewhat cumbersome and slow, and unless you spend an enormous amount of effort you can't get an overall impression of optical performance the way you can at a glance with projection testing.
		The MTF equipment I used was designed and built by Optikos in Cambridge, Mass., and worked on the principle of performing a Fourier transform of a point image formed by the lens.
		MTF is one of the things that can be calculated in the >better optical design programs.
	medfmt.8k.com /mf/mtftester.html (4362 words)

	Edmund Optics
		The MTF of a lens is a measurement of its ability to transfer contrast at a particular resolution level from the object to the image (see Figure 1).
		An MTF graph plots the percentage of transferred contrast versus the frequency (lp/mm) of the lines.
		This MTF testing equipment enables characterization of the actual performance of both designed lenses and commercial lenses (whose optical prescription is not available to the public).
	www.edmundoptics.com /TechSupport/DisplayArticle.cfm?articleid=248 (732 words)

	Move To Front (MTF)
		The basic idea of the MTF scheme is to maintain a list, which represents the symbols of an alphabet.
		The MTF scheme is a typical representative of a List Update Algorithm (LUA) and is used as a Global Structure Transformation (GST) inside the Burrows-Wheeler Compression Algorithm (BWCA).
		Besides that, a modification of the MTF algorithm is described which moves the next symbol to the second place in the list instead of the first place, except the old position of the new symbol was 0 or 1.
	www.data-compression.info /Algorithms/MTF (1151 words)

	Resolution and MTF curves in film and lenses
		The MTF curve on the left is for Fujichrome Velvia, a highly saturated ASA 50 slide film known for its sharpness.
		MTF is a function of the distance from the image center, the aperture (f-stop), the spectrum of the light, and even the focusing distance (macro lenses are designed to maintain good MTF at close focus).
		The MTF curve on the left is for the 150mm f/5.6 Schneider Apo-Symmar lens, focused at infinity at f/22.
	www.normankoren.com /Tutorials/MTF1A.html (3694 words)

	MTF Locator - Kenner Army Health Clinic
		Prime enrollees may be able to make an MTF appointment online at www.tricareonline.com.
		"MTF" has come to be used as shorthand for all uniform services hospitals, clinics, and medical centers (including the several former Public Health Service hospitals that are now called "designated providers" under TRICARE).
		Prime is the usual choice for patients who use the MTF.
	www.tricare.osd.mil /MTF/facility.aspx?fid=34 (665 words)

	Musculoskeletal Transplant Foundation (Site not responding. Last check: 2007-11-04)
		MTF encourages everyone to learn the facts about donation, to make a personal choice and to discuss it with their loved ones so their wishes may be carried out.
		Most organ, tissue and eye banks that are members of MTF send tissue to MTF for processing and distribution.
		This allows them to concentrate on their organizational mission and responsibility to their community, which is donor recovery and advances in medicine and biotechnology have dramatically improved how bone and musculoskeletal tissues can be used.
	www.mtf.org /donor/donation.html (1039 words)

	CD Baby: MTF: New Life
		M.T.F are not merely a standard band for generation heavy.
		Heavy music for the masses, M.T.F is an explosive blend of melodic heaviness that will leave you knocked on your ass, and begging for more.
		A four piece band out of Seattle, Washington M.T.F was formed in December 1999, hitting the venues to play live shows all over the great Northwest, and releasing two Demo CD's: "Dead Filled Skies" (1999), and "13-20-6" (2000).
	www.cdbaby.com /cd/mtfmusic (353 words)

	AMSOIL - Synthetic Synchromesh Transmission Fluid (MTF) 5W-30 (Site not responding. Last check: 2007-11-04)
		AMSOIL Synthetic Synchromesh Transmission Fluid (MTF) is a premium quality synthetic lubricant designed to surpass the most demanding lubrication requirements of manual transmissions and transaxles where non-extreme pressure fluids are used.
		Unlike its mineral oil counterparts, MTF prevents the thinning effects of mechanical shear for stable viscosity, superior film strength and anti-wear performance.
		MTF exceeds the performance requirements of both manual transmissions and transaxles.
	www.amsoil.com /storefront/mtf.aspx (326 words)

	GOES MTF Measurements
		Before launch, the GOES MTFs are measured for the visible and infrared channels, and compared to the requirements.
		A "MTF" is a fraction - the output amplitude divided by the input amplitude of a sine-wave at a spatial (angular) frequency.
		The GOES visible channels are required to have at least 32% MTF at 18,000 Hz/radian (Nyquist), and at least 92% MTF at 4,490 Hz/radian (4 Nyquist).
	goes.gsfc.nasa.gov /text/goes.mtf.html (373 words)

	wrotniak.net: MTF as a Measure of Lens Resolution
		This graph, originally published by Nikon for their 18-55 mm ED zoom lens, shows the MTF versus radial distance at one given focal length, and for two pattern frequencies: 10 and 30 cycles/mm, both sagital (S) and tangential (M).
		The MTF at lower frequency (here: 10/mm) is often interpreted as the measure of the lens' contrast, while that at higher frequency (here: 30/mm) — of the resolution; my disagreement on the latter will follow below.
		This is easy to interpret: if lens A shows the central MTF of 0.2 at 40/mm, and lens B drops down to that value at 80/mm, the latter is capable of reproducing twice the detail, period.
	www.wrotniak.net /photo/tech/mtf.html (990 words)

	Move to front
		Mtf instead of outputting the symbol (byte), outputs a code which refers to the position of the symbol in a table with all the symbols, thus the length of the code is the same as the length of the symbol.
		In runs of the same byte, where mtf can transform "aaaaabbbb" to "000001000" an entropy encoder (I mean order-0) will assign less bits to 0 which now occurs more often than "a" or "b" did.
		Don't try to compress the output of mtf with a sensitive context compressor, results will be poor, because this transformation, though it's reversible, completely eliminates the contexts.
	www.arturocampos.com /ac_mtf.html (522 words)

	alphaWorks : Model Transformation Framework : FAQs
		MTF is intended specifically for transforming Eclipse Modeling Framework models, although we include support for generating arbitrary text files via templates.
		MTF supports this via extensions and custom constraints, which allow you to extend the MTF mapping definition language.
		MTF was developed partly in order to prototype concepts that may appear in the proposed OMG MOF 2.0 Queries, Views, and Transformations (QVT) standard, with the intention of implementing more of the specification over time.
	www.alphaworks.ibm.com /aw.nsf/FAQs/mtf (481 words)

	MTF Camps / Rider Programs / Millsaps Training Facility - Cairo, GA (Site not responding. Last check: 2007-11-04)
		MTF knows the right kind, and more importantly, the right amount of training so that you peak on race day.
		MTF riders, on the other hand, train in the hot, Southern Georgia sun (it doesn’t get any hotter).
		Factory Connection will be on site at MTF during the camp to help you set up and test your Factory Connection suspension.
	www.mtfmx.com /programs/loretta.php (462 words)

	MTF Page
		"In a MTF test a pattern of lines, fl and white, are projected with the lens.
		Color fringing (lateral colors at the image borders) does leave a distinctive clue in the MTF, but you need to examine a series of MTF curves measured at different apertures to detect it.
		So, if the sagittal and tangential MTF curves become more widely separated as you stop down, with sagittal getting better and tangential staying more or less constant, then there is almost certainly color fringing present.
	www.photozone.de /3Technology/mtf.htm (663 words)

	Turfgrass Maintenance, Management, Research: Michigan Turfgrass Foundation
		The Mission of the Michigan Turfgrass Foundation is to work in partnership with Michigan State University, supporting ongoing programs in research, education and extension in the area of professional turfgrass management that will benefit all individuals who manage turfgrasses or derive pleasure from the results of such management.
		Located at the Robert W. Hancock Turfgrass Research Center on the Michigan State University campus, the MTF continues its successes in these areas by working closely with the University and the industry.
		MTF’s #1 job is to support turf research.
	www.michiganturfgrass.org (355 words)

	OVERVIEW OF A DATABASE SYSTEM FOR MAGNET MEASUREMENTS
		This document will introduce the MTF data management system by identifying the database users, identifying special features of SYBASE which are important to this design, describing the overall schema for data storage, describing documentation and implementation practices at MTF, and discussing the tools and utilities which MTF users will utilize.
		A database schema must declare the tables in which data is to be stored and specify the columns (attributes) which are to be described in that table, the relations between columns in that table and other tables in the schema, and permissions, indices, keys and related details of the table specification.
		The MTF testing systems is planned on the basis of testing multiple subjects (usually magnets) in a series with the same design features for all things in the series.
	tdpc01.fnal.gov /theis/mtf_database_overview.htm (8910 words)

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