background preloader

Digital Camera Sensor Sizes: How it Influences Your Photography

Digital Camera Sensor Sizes: How it Influences Your Photography
This article aims to address the question: how does your digital camera's sensor size influence different types of photography? Your choice of sensor size is analogous to choosing between 35 mm, medium format and large format film cameras — with a few notable differences unique to digital technology. Much confusion often arises on this topic because there are both so many different size options, and so many trade-offs relating to depth of field, image noise, diffraction, cost and size/weight. Background reading on this topic can be found in the tutorial on digital camera sensors. Sensor sizes currently have many possibilities, depending on their use, price point and desired portability. Canon's 1Ds/5D and Nikon D3 series are the most common full frame sensors. Camera phones and other compact cameras use sensor sizes in the range of ~1/4" to 2/3". The crop factor is the sensor's diagonal size compared to a full-frame 35 mm sensor. 35 mm Full Frame Angle of View Uncropped Photograph Related:  Photography Calculators

www.tawbaware.com/maxlyons/calc.htm This page contains several calculators of use to photographers. All of the calculators are written using Javascript, which means you'll need a Javascript enabled browser (IE/Firefox/Opera/Chrome/etc.) to use this page. It also means that you can download/save this page to your computer and use the calculators without being connected to the internet. Fields displayed on the left of the "compute" button are for user input. This calculator computes depth of field, based on aperture, focal length, distance to subject and Circle of Confusion (CoC). This calculator computes the degree of parallax error that occurs when a camera is rotated around a point that isn't the nodal point. This calculator computes the angular field of view for a lens of a specified focal length on a 35mm camera. This calculator computes the field of view, measured in feet or meters, for a lens of a specified focal length on a 35mm camera.

Gems Sensors & Controls - Pressure Switch, Level Switch, Liquid Level Switches & Sensors Digital Photography Tutorials Learn how to take and edit digital photographs using visual tutorials that emphasize concept over procedure, independent of specific digital camera or lens. This is a complete listing of all tutorials on this site; click the drop-down links in the top menu to see particular topics. Photography is going through an exciting transition period as many film photographers are beginning to explore the new capabilities of digital cameras. While the fundamentals have remained similar, other aspects are markedly different. These tutorials are rarely influenced by changes in image editing software and camera equipment — due to their unique concept-based approach. View in other languages: Português Русский Deutsch Français Italiano

Clarkvision.com: Night and Low Light Photography with Digital Cameras by Roger N. Clark All images, text and data on this site are copyrighted. They may not be used except by written permission from Roger N. Clark. Contents IntroductionNight photography of City ScenesLow Light with Moving SubjectsLong Exposure Deep Sky Low Light ImagingVery Low Light ImagingLight Intensities Under Different Lighting ConditionsA Moonlit SceneAstronomical ImagingDiscussionImproving Photon Collection Existing Technology Faster lens Bigger sensor with correspondingly larger lens Larger pixels in a trade of spatial resolution for collecting more light per pixel with a given lens Future Technology Improve the transmission of the optical system Improve quantum efficiency Monochrome sensor Other Digital Cameras References Introduction Figure 1. Night and low light photography places some very demanding constraints on photography. The phrase "low light" is key. As noted above, ISO does not change sensitivity. Figure 2a. Night photography of City Scenes Figure 2b. Figure 2c.

Create an Invisible Watermark in Photoshop As any other precautionary system, this is not a full-proof way to mark your images. Someone with enough perseverance can eventually remove any sort of copyright markers. Create the Watermark This technique works with almost all photos. Extremely saturated images can pose a problem though. We’re working with Aconyte-Stock’s excellent stock image. Open up the image you want to watermark and create some black copyright text with the Type Tool{ Set the text layer’s Blending Mode to Color and watch the text disappear. The color blending mode preserves the Background layer’s luminance data and colors it using the text’s color. View the Embedded Watermark Right click the text layer and Rasterize it. Right click it again and flatten the image. To view the watermark, go to the Image/ Adjustments menu and click the Hue/Saturation entry. Drag the Saturation slider all the way up and play with the Hue slider to get a better contrast. Tweaks and tips Of course, placement is everything with this technique.

Aperture Diffraction Limits - Lonestardigital.com Apertures, Pixel Sizes, and Diffraction Limits. Contrary to popular belief, smaller lens apertures (with their greater depth of field) don't necessarily result in sharper pictures. When the negative effects of aperture diffraction begin to outweigh the positive effects of increased depth of field, sharpness falls off and fuzziness sets in. Smaller apertures also cause slower shutter speeds, often requiring higher ISO settings to make a shot. Understanding how aperture diffraction works and relating how diffraction applies to your camera will help you to take sharper pictures. Cambridge in Colour has an outstanding tutorial & essay about diffraction limited photography. Below: A representation of Cambridge in Colour's interactive visual diffraction table. This will all make more sense when you go to the tutorial, read the article, and try out the real interactive table for yourself. Hover your mouse pointer over the camera of choice (hover, don't click). Visual Table Examples:

Brooke's Sensors page There are a number of technologies that are used to sense magnetic fields. I have also included some places where magnetic fields are used like in MRI, NMR, particle accelerators that use super conducting magnets. 1 Oersted = 79.58 Ampere-Turns/Meter 1 nano tesla = 10 micro Oe = 1 Gamma 1 Tesla = 10,000 Gauss Papers about Magnetism - Journal of Magnetism and Magnetic Materials - For over 100 years, Elsevier Science has been dedicated to facilitating the exchange of information. The Magnetic Measurements Handbook - NASA has a series of web pages devoted to magnetic topics called: The Great Magnet, the Earth & A Millennium of Geomagnetism Earth's Magnetic Field Magnetic Field Calculator - need Lat, Lon, elevation, can choose WWM2005 or IRGF 10 models. Compass The direction of the horizontal component of the Earth's magnetic field can be determined by a compass. Helmholtz Coil(s) Magnetic Shielding Passive

22 Professional Photoshop Image Enhancing Tutorials Adobe Photoshop is the premier tool for digital artists when it comes to professionally enhancing images. Whether you’re a beginner just learning the ropes or an advanced user looking for unique techniques to add to your Photoshop arsenal, you’ll find some tutorials here that you’ll surely want to bookmark. In this article, you’ll discover plenty of tutorials that deal with enhancing images, adding unique and impressive effects, and recreating digital replications of popular traditional photography techniques. 1. Cross Processing You can learn how to apply the Cross Processing film-developing technique digitally to your images by reading through this quick and educational tutorial that leverages the powers of the Curves tool in Photoshop. 2. Take your ordinary digital photos and simulate the Lomo Photography effect (also known as Lomography) that will apply a dreamy and surreal effect onto your images in this tutorial that uses a Levels Adjustment layer among other Photoshop techniques. 3.

Digital Camera Sensor Performance Summary Digital Camera Reviews and Sensor Performance Summary by Roger N. Clark All images, text and data on this site are copyrighted. Contents Introduction Different Photography Situations Full Well Capacity Signal-to-Noise Ratio Read Noise Dynamic Range Unity Gain Native ISO Low Light Sensitivity Factor Noise Sources Thermal Noise from Dark Current Diffraction Pixel Density Full Sensor Apparent Image Quality (FSAIQ) Focal Length Limited Apparent Image Quality (FLL-AIQ1600) Focal Length Limited Apparent Image Quality FLL-AIQ-MAX Camera Sensor Figures of Merit (CSFM) Sensor Performance Models Data Tables References Notes Data on this page are from the references below and from the Digital Camera Sensor Analysis pages on this site: Introduction Modern digital cameras contain electronic sensors that have predictable properties. Table 1a Why is this important? Full Well Capacity

Related:  Photography