Posts tagged "Nd Filters"

NEUTRAL DENSITY FILTERS

"Hore Abbey" prisoner with an ND Filter by Daniel L (Click Image to See More From Daniel L)

Neutral firmness or ND filters have the solitary role of slicing down the volume of light as a whole. A undiluted neutral firmness filter would broadcast all wavelengths of light equally, so there would be no tone change. Though not essentially perfect, it can be used similarly well in both tone photography or black and white photography.

It is made in a far-reaching accumulation of densities. Depending on the manufacturer, there are now two rating systems usually used to suitable the firmness of neutral firmness filters.

• A candid system of total numbers whereby an ND-1 indicates a need for a 1-stop bearing increase; ND-2 is two stops; ND-3 is 3 stops; and so on.
• In the other, which is scientifically oriented, the decimal number .3 indicates a 1-stop bearing enlarge need; .6 is for two stops; .9 is for 3 stops; and so on.

Typical Uses of ND Filters:

1. To Blur Action – Sometimes it is fascinating to use a comparatively delayed shiver speed to prove transformation or to uncover an object’s path. If a quick movie is in use in splendid light, or if a far-reaching orifice is indispensable to extent abyss of field, the scold bearing might usually need an undesirably tall shiver speed. An suitable neutral firmness filter creates any preferred shiver speed possible.

2. To Reduce the Effect of Transitory Events – Long exposures can “remove” all relocating objects from a picture. That is, if you are photographing a structure or site underneath resources where flitting automobiles, pedestrians, or site workmen might be neglected design elements, the use of a long bearing will undo such short-lived presences; they will not be in one place long enough to jot down on the film. (In long time exposures an stipend contingency be made for respect failure.

3. To Reduce Depth of Field – By gripping the shiver speed unaltered when neutral firmness filters are introduced, the lens orifice can be non-stop to revoke the abyss of margin in the image. The use of shoal abyss of field, remember, tends to visually besiege the subject, because all not in the principal craft of concentration will crop up not sharp.

"Ice Creatures at Mystic Watering Hole" prisoner with an ND filter by Stephen Carolin (Click Image to See More From Stephen Carolin)

4. To Prevent Overexposure of Fast Film – In very splendid light, you might find it unfit to equivocate overexposing a very quick film, generally with the very vast and comparatively delayed shutters found on perspective camera lenses. (These often extent quick speeds to no more than 1 125th or 1 250th of a second.) Occasionally, you might find yourself with only one sort of movie superfluous new at the end of a day and then be faced with a incident that requires slower films. By shortening the volume of light entering the camera, neutral firmness filters concede larger bearing flexibility.

5. Exposure Effects – Several applications of neutral firmness filters make use of their light-absorption qualities.

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Article from: PictureCorrect Photography Tips

FEBRUARY (UNGRADED VERSION) – SHOT UPON A CANON EOS 550D / REBEL T2I (PREPROD UNIT)

by Chris J Bowley

NEW BLOG about “HD video on DSLRs – the GOOD, the BAD, the UGLY”: ninofilm.net T2i / 550D Battery showdown: original vs. knock-off: ninofilm.net Series on necessary bill accessories for the Canon T2i / 550D: Part 3: ND filters and the abyss of field: bit.ly Part 2: Batteries, Memory Cards, Bags: bit.ly Part 1: Basic LENSES: bit.ly Check out the NEW GRADED VERSION OF “FEBRUARY” here: ninofilm.net Please examination the full camera examination at ninofilm.net This reduced film, FEBRUARY, was shot on a pre-production section of the new Canon EOS 550D / Rebel T2i. This is UNGRADED footage true off the camera (converted to ProRes LT first for easy editing). we used a “flattened” design character as summarized by Stu Maschwitz on his blog: prolost.com Shot in 1080p with 25fps, solely for the slow-motion, which was shot in 720p with 60fps and after reconformed to 25fps. EDIT: we updated the blog with a rolling shiver exam and a reduced tender footage shave (straight off the camera) for download. Follow me on Twitter around www.twitter.com Music: “Living Waters” by Philip Glass from the “Truman Show”. You can buy an MP3 download on Amazon: www.amazon.com
Video Rating: 4 / 5

Hands-on preview with the Canon 550D aka Canon Rebel T2i digital camera. Testing the slowmotion mode. Shot in 1080p 25fps and 720p 50fps (slow suit clips). Graded with my tits. Music is by Binaërpilot
Video Rating: 4 / 5