**All light source pricing includes power supply and 30% surcharge accessories purchased without spectrometer instrumentation**

A beam of light incident on the metal surface is reflected. Reflection involves two rays - an incoming or incident ray and an outgoing or reflected ray.

One particular use for a hotshoe-mounted camera light meter is if you shoot film. Many analogue photographers use second-hand vintage SLRs or large-format cameras, and often on these old cameras, the first thing to fail is the built-in light meter (if it even has one in the first place).

... Fresnel light, with the advantages of LED technology including DMX-controllability. The Sola 6+ draws a small fraction of the power of conventional Fresnel ...

DCX Lens Option – This add-on option increases the deuterium lamp intensity 7-10x gain and is highly recommended for highly absorbing samples and reflectance measurements.

Long Life – 2,000 hour performance due to special air flow design and ultra quite fan operation. Customer reports of continuous operation for over a year!

Y Deng · 2017 · 234 — Coherence properties of different light sources and how they affect the image quality of holographic display are investigated.

UV + Visible Light – The optional F400-YB fiber optic bundle cable is used to combine the SL1 tungsten halogen lamp and the SL3 to cover wavelength ranges from 190–2200nm

In genres like professional portrait or product photography, it is critically important to get accurate, balanced exposures. With a light meter you can ensure that your studio lights are at just the right level relative to each other, that your flash is firing at the correct intensity, and more. A light meter can be your best friend in making sure you get it all right every time.

A light meter is as it sounds – a device for measuring the available light in a scene so that you can set your camera’s exposure accordingly. Yes, all modern cameras have their own built-in metering systems. However, a light meter offers a number of advantages that makes it a useful tool for those who require precise exposure accuracy.

High Output Power – With over 15 Watts/m^2 the SL3 is one of the brightest compact UV light sources available.  It can be used for absorbance, transmission, fluorescence, and even reflectance spectroscopy.

Light meters can be an invaluable tool for photographers and videographers alike. Whether you shoot in the studio or on location, having a reliable light meter at your disposal is a time-honoured way of making sure you get accurate exposures, time and again.

Light meters come in two main varieties – handheld and hotshoe-mounted. In general, handheld meters are the premium option, with cutting-edge technology and extra functions like flash measurement, touchscreens and wireless triggering of compatible flash remotes. Most meters are battery powered, but there are also battery-free analogue meters available, which can be tremendously handy if you don’t fancy the idea of yet another device you need to remember to charge. Hotshoe-mounted meters tend to be simpler and more affordable.

Filter Options – Integrated filter holder fits standard size 0.5 inch diameter disk filters. The U330-filter removes the deuterium spikes seen near 485nm

20211014 — Diffused light is not necessarily soft, and soft light is not necessarily diffused. As a photographer, I previously used diffused and soft interchangeably.

Technical specifications are for guidance only and cannot be guaranteed accurate. All offers subject to availability and while stocks last. Errors and omissions excepted.

The SL3 Deuterium Light Source – emits a deep UV spectral output over the 190- 450nm range and higher. When using StellarNet BLACK-Comet concave grating spectrometers, you can perform spectroscopy applications past 550nm.

For one, it frees you to move around your scene or set and measure light in different areas. It allows you to conduct what’s called “incident metering” – meaning when you measure the amount of light falling onto your subject, rather than the amount of light bouncing off it, which is what your camera’s system is measuring when you point it at something.

2024127 — Ultraviolet radiation · ionize, meaning that it can knock an electron out from atoms and molecules. All high-frequency electromagnetic radiation ...

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This is called ‘reflected metering’. While it’s a good, reliable way to get a quick reading of a scene, it is easily compromised by variances in tone and colour in different subjects. Subjects that are lighter than neutral grey – white snow, wedding dresses, etc – will appear brighter than they are, causing the camera to underexpose. Meanwhile, subjects darker than neutral grey, like a black cloth or a black cat, will reflect less light and cause the camera to overexpose.

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This makes it much more difficult to get well-exposed results out of a camera that is otherwise perfectly functional. Getting a hotshoe-mounted or handheld light meter can be a more cost-effective way to keep the camera running than taking it down to the repair shop. Light meters are also handy if you’re interesting in conducting photographic experiments such as building your own pinhole camera.

For example, the color of the leaf is green because it reflects the green color while the other colors like red and blue light are absorbed. (image will be ...

§Finance is offered subject to application, financial circumstances and borrowing history. Minimum amount and eligibility criteria applies. Warehouse Express Limited trading as Wex Photo Video, 13 Frensham Road, Norwich. NR3 2BT. Company registration number 03366976 acts as a credit broker and not the lender. Credit is provided by Novuna Personal Finance, a trading style of Mitsubishi HC Capital UK PLC, authorised and regulated by the Financial Conduct Authority. Financial Services Register no. 704348.

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StellarNet has a variety of UV light sources available for spectroscopy applications. Ultra-violet light interacts with many types of molecules and samples and thus finds use in environmental studies, biological applications, chemical processing, and many other applications.