The depth of field in an image is the distance between the parts that appear in focus. When there's a big distance between the things that look crisp and ...

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24VLEDlights trucks

Our Professional Grade Line of LED Strips is designed with professionals in mind. 24V allows for easier wiring (smaller gauge) and the ability to wire LED in longer runs. All of our 24V Professional Grade LED Strips are UL-Listed for added trust. These LED Strips have CRI>90, with accurate and consistent color temperature ratings (CCT). These LED Strips are a specification (architectural) grade linear LED strip lighting solution. Please refer to our guide below the products for added assistance in selecting your 24V Professional Grade LED Strips

Let's say you are out shopping for Boxing Day, or are so crazy to be shopping today (the 24th) and just aren't quite sure which focal length prime or zoom range to choose for your loved photographer or for yourself.  I was out doing some test work with Nikon's new 200mm-500mm today (more on that in it's own review) and put together this simple sequence to give you a sense of what different focal lengths will deliver with the same camera position.

Architectural-grade LED strips are designed to be housed in an aluminum channel, profile or extrusion to dissipate heat (maximizes lifetime) and to protect LED strips and components from the elements. When selecting an LED strip and extrusion, channel and profile combination, the following needs to be taken into consideration:

Once I was set up, I locked down the tripod for pan and tilt so there would be no movement as focal lengths and lenses were changed.  I had to forego my usual RRS tripod because I misplaced or loaned out my Arca plate for the D4s and instead used a Manfrotto Carbon Fibre 055 leg set and Manfrotto 055 Photo/Video head.  It's good gear and certainly capable of holding the equipment I was using.  Because I wanted nothing to change, I put the camera on the tripod instead of using the lens foot for the 200-500 as I usually would as I wanted to reduce the number of variables in the exercise.  In practice, I would not shoot this way and would normally use a lens foot if one was available.

Some readers always want to ask if these are straight out of camera.  Heck no.  I shoot in RAW and that means post processing is required.  To be kind, the light was flat.  The sky was flat.  The colours were flat.  I could have picked a lousier day, but it may have taken some time.  So for those who care about that sort of thing, here's what I did to the 24mm image and copied as settings to everything else.

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24VLED LightStrip

Best used in: Classic and Traditional design schemes, not as warm and "amber" as 2200K, our most poipular color temperature. LED Cabinet Lighting, LED Kitchen Lighting, LED Dining Room Lighting, Warm Linear LED Lighting

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Titre : Luce coerente. , 1969; Support : oil on canvas; Taille : 60 x 70 cm. (23.6 x 27.6 in.) Vente : *; Estimation : *; Prix : *; Département : ...

2021426 — Contact lens technology is reaching the point where science fiction meets reality. From interfaces to pressure monitors and drug release ...

Best used in: Modern and contemporary design schemes. Design schemes with a lot of white and blue elements. Accents blues and greens, can diminish the appearance of reds, yellows and oranges. (Our high CRI minimizes this effect). Cool LED light strips, Cool LED Strip lighting, LED cool linear lighting

RoHS certification; 8. Ecodesign Directive; 9. ErP Certification; 10. GS Certification; 11. VDE Certification; 12. BS Certification; 13. UKCA Certification ...

2024111 — It is now very easy to find devices in the room where you are. With one click of a button in the application, you can find all the devices ...

24 voltLEDIndicatorLight

Science, Technology, and Innovation. Science, technology, and innovation are cornerstones of the American economy. They are also dominant forces in modern ...

24V DCLightfixtures

Best used in: Classic, Traditional Design schemes, very soft and inviting lighting. Accents reds, yellows and oranges, can diminish blues and cooler colors. Patio Lighting, Landscape lighting, beach lighting, walk way LED linear Lighting. LED Landscape Lighting, Linear LED Outdoor Lighting, Linear Amber LED Lighting

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CCT, or correlated color temperature, is a measure (in Kelvin) of a white light’s perceived color. Warmer (lower) color temperatures give off a more "yellow" light color while higher color temperatures give off a "cooler" and bluer light color. The following chart should assist you in making a selection on color temperature.

Although the desired intensity or brightness of a light source for a space is a very subjective parameter, experts and lighting designers have come up with some general formulas to assist customers in making a decision on the type of lights to purchase for their applications.

Advancements in LED technology have given way to what was formerly impossible: a high-quality source of consistent white color LED lighting. Today, phosphor coating on LEDs allows commercial-grade white LED strips to give accurate and desirable color temperatures (CCT) that have the ability to render colors well. The universal method for measuring color temperature is the CRI scale, where 100 is the best (sunlight). While CRI is mostly adequate, modern methods of measurement (CQI) can give us an even better picture of a white light’s ability to render color. Our commercial LED strips all have a CRI of over 90.

**Light Intensity can always be adjusted with a dimmer (w/ use of a dimmable LED driver). It is advisable to use brighter lights than needed in conjunction with a dimmer.

LED Strip Lighting Density (measured in LED's/M): The higher the density of the LED chips on the LED strip, the more light is diffused on a frosted lens. For smaller LED fixtures, a higher density lighting (120/M+) is needed to diffuse the lights so the fixture can be "dotless" or close to "dotless." Our LED strips range from 30/M (least dense) to 240/M (highest density). LED Strip Width: LED strips are available in widths from 5mm to 20mm. When building fixtures, please see the specs of the aluminum channel and the LED strips to make sure they're compatible. Power Supply Selection: LED strips need a power supply or transformer. We have them available in dimmable or non-dimmable configurations. Calculate the amount of power you need, multiply that number by 1.2 and select a transformer that can power that figure (120 percent of the needed wattage).

Now you have a good idea of what different focal lengths will do, based on both a full frame 35mm sensor.  To figure out what would be happening on a crop sensor camera, you would crop in whatever your crop factor is because these are full frame lenses and so will produce an image circle MUCH larger than an APS-C sensor will see.  For example, the 24mm full frame view would have a diagonal angle of view similar to an APS-C crop sensor lens with a focal length of 16mm on a Nikon and 15mm on a Canon

24VLightBulb

Best used in: Any design scheme. Natural white is the most neutral color temperature. Accents all colors evenly. Natural Linear LED lighting, Natural White LED Strip Lighting

So here's the basic setup.  I planted the tripod on the arch of a footbridge and worked my way down from 500mm to 24mm using the 200-500/5.6 and 24-70/2.8 mounted on a D4s body.  Gotta love the Nikon people who send me such lovely gear to review!

24VLED LightBar

I make no claims about the interest level of the images, because they are fairly blasé.  Regardless they do give you a very good sense of what different focal lengths deliver when shot from exactly the same position.  The 50mm focal length image gives you the closest approximation of what the human eye sees, so you can use this as a reference.

I did not use any filters on the lenses, but did employ the manufacturer supplied hood for every shot.  Whether to use protective filters or not is a very different conversation.

Regular readers know that I am a big fan of Really Right Stuff products.  Their customer service is superb.  If you choose to purchase from them at their site, please let them know that I referred you.

In general, 15-20 lumens is desired for adequate lighting per square foot. The following is a breakdown of the most common applications for linear LED lighting and the agreed upon intensity (brightness) that is required to adequately light the space.

A condenser is one of the main components of the optical system of many transmitted light compound microscopes. A condenser is a lens that serves to concentrate ...

Welcome to The Photo Video Guy.  I share training, ideas, opinions and tips to help you make better photographs and videos.

The Light Green Machine Institute is dedicated to reducing the installed weight of paper machines and other facility or unit operations in a pulp and/or paper ...