«F-NUMBER» এর সঙ্গে সম্পর্কিত ইংরেজী বই
নিম্নলিখিত গ্রন্থপঞ্জী নির্বাচনে
f-number শব্দটির ব্যবহার খুঁজুন। ইংরেজী সাহিত্যে
f-number শব্দের ব্যবহারের প্রসঙ্গ সম্পর্কিত বই এবং তার থেকে সংক্ষিপ্তসার।
1
Encyclopedia of Optical Engineering
The depth of field of a system may or may not be limited by the optical diffraction
limit (and hence the F#). therefore a detailed discussion of alternative
calculations for this parameter is included. F-NUMBER The f-number, sometimes
written F# ...
f-number is the quantity that indicates the irradiance of the light incident on the
recording medium relative to the irradiance entering the lens. It's not only related
to the aperture size but also the focal length of the lens; it gives you an idea of the
...
Galen C. Duree, Jr., 2011
3
Guide for Concrete Floor and Slab Construction
8.15.1.1 F-number system—Both flatness and levelness requirements should be
described by Face Floor Profile Numbers (Face 1987). Two separate F-numbers
are required to define the required flatness and levelness of the constructed ...
4
Digital Nature Photography: The Art and the Science
The aperture in the lens is largest when the f-number is smallest and smallest
when the f-number is large such as f/22 or even f/32. This relationship confuses
beginning photographers because it is counterintuitive. Big f-numbers refer to
small ...
John Gerlach, Barbara Gerlach, 2007
5
Image Sensors and Signal Processing for Digital Still Cameras
The F-number of a lens (F) is expressed as half the opening angle θ′ for the
focused light beams in Figure 2.1, as shown as in Equation 2.4. (2.4) F = 1 2sinθ
′ In reality, because this depends on the cross-sectional area of the light beams,
...
6
Laser Processing of Engineering Materials: Principles, ...
The focal number, or f -number, of a focusing optic characterizes its focusing
ability. The f-number defines the convergence angle of the beam: f = F d B (4.1)
where F is the focal length of the optic and dB is the diameter of the beam or
aperture, ...
7
Medical Infrared Imaging: Principles and Practices
A tradeoff has to occur to find the optimal f/number for the system. The table
below shows the tradeoffs between optics diameter, focal length, resolution, and
FOV. 5.5 Spectral Requirement The spatial resolution is heavily dependent on
the ...
Mary Diakides, Joseph D. Bronzino, Donald R. Peterson, 2012
Large aperture/small f-number Small aperture / large f-number Figure 26.25 The
adjustable opening in front of a camera lens is called the aperture. Figure 26.26
Changing the aperture of a camera changes the f-number. A A larger f-number ...
9
Infrared Optics and Zoom Lenses
Allen Mann. dairy = 2.44XF (1.15) where k is the wavelength and F is the lens F-
number. Detector arrays are specified by the detector size and the number of
pixels. Again, the smallest target that can be discerned is limited by the detector
size.
10
Foundations Of Physics
(D/f)2 °c I/A/2 Thus, smaller the f-number N the greater is the brightness of the
image, and, hence, the smaller is the exposure lime (or higher is the shutter
speed). The maximum diameter of the aperture is equal to the diameter of the
lens.
R. S. Gambhir, D. Banerjee, 1993
10 «F-NUMBER» শব্দটি আছে এমন সব সংবাদ
জাতীয় ও আন্তর্জাতিক সংবাদের ক্ষেত্রে
f-number শব্দটি নিয়ে কি বলা হয়েছে এবং নিম্নলিখিত সংবাদে কোন প্রসঙ্গে
f-number শব্দটি ব্যবহার করা হয়েছে।
Microsoft Lumia 640 XL Review: Windows Phone Dreams Big
Its specs are again, decent: 1/3 inch sensor size, 28mm focal length, a minimum focus range of 10 cm, f/2.0 ratio for f-number/aperture. As far as ... «Softpedia News, জুন 15»
Mastering Depth of Field
The hyperfocal distance is given by a formula relating focal length, f-number and circle of confusion size that dictates the focal distance you ... «Fstoppers, জুন 15»
How to take better photos in low light
Then select the smallest f-number your lens can reach. Note that when using a smartphone you have no control over the aperture of the lens. «CNET, জুন 15»
The Exposure Triangle: Understanding How Aperture, Shutter …
A wider aperture (or lower f-number) means more light will be let in by the lens, simply because the opening is larger. A narrower aperture (or ... «Fstoppers, জুন 15»
Professor Bob Newman explains how it is possible for a lens to …
The f-number of a lens is the focal length divided by the aperture diameter. Since the teleconverter is placed at the back of the lens, behind the ... «What Digital Camera, এপ্রিল 15»
Battery-Free Video Cam Grabs Pix—and Power—from Same Light …
... self-powered camera system includes a sensor array (the green board to the rear of the unit) and a lens with an effective F-number N = 3:5. «Scientific American, এপ্রিল 15»
LG G4 sports leather, metallic, and other swappable back options in …
That's the lowest f-number we've seen in a flagship phone headed to the U.S.. The story behind the story: LG has been feeding us tidbits of ... «Greenbot, এপ্রিল 15»
LG confirms G4 unveiling for April 28, teases f/1.8 camera
That's the lowest f-number we've come across in a flagship phone in the U.S., though a handful of phones (from Lenovo, Xiaomi, and Acer) ... «Greenbot, এপ্রিল 15»
8 Essential Steps to Perfect Exposure - The Knowledge Any …
For example, if a lens has a focal length of 50 mm and its iris diameter is 25 mm, the f-number is 2 and the aperture diameter is f/2. Lenses use ... «cinema5D news, মার্চ 15»
Fujifilm XF 56mm F1.2 APD R
The dowside to the APD filter is a slight loss of light at faster apertures, so that f/1.2 effectively becomes f/1.7 (the effective F-number is shown in ... «PhotographyBLOG, ফেব. 15»
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