10 24, 2011Posted inCategory: None,passive,high,pass,filter,design,alkaline,water,system,best,shower
PASSIVE HIGH PASS FILTER DESIGN - RANGEHOOD FILTERS MELBOURNE.
Passive High Pass Filter Design
- Filter design is the process of designing a filter (in the sense in which the term is used in signal processing, statistics, and applied mathematics), often a linear shift-invariant filter, which satisfies a set of requirements, some of which are contradictory.
- A high-pass filter, or HPF, is an LTI filter that passes high frequencies well but attenuates (i.e., reduces the amplitude of) frequencies lower than the filter's cutoff frequency. The actual amount of attenuation for each frequency is a design parameter of the filter.
- High Pass is a mountain pass in the foothills of the Coast Range mountains in Lane County, Oregon, United States. High Pass Road connects the unincorporated community of Horton, on the west side of the pass, with Cheshire, Monroe, Junction City, and the other low-lying farm towns to the east.
- (of a filter) Transmitting all frequencies above a certain value
- In J. R. R. Tolkien's fantasy world of Middle-earth, the Misty Mountains (also known by its Sindarin name of Hithaeglir—misspelled as Hithaiglin on the original Lord of the Rings map—and as the Mountains of Mist) is a mountain range, running for 795 miles (1280 kilometres) from north to south,
High Pass Focus
This is a Photoshop experiment more than anything else. There's been some discussion on Strobist about Dave Hill's post-processing techniques so I thought I'd play around a bit. This is done with two high-pass layers and a final curves adjustment to pop the highlights.
The high-pass layers are both in hard light mode, but I applied gaussian blur to them to avoid the extreme detail look (which wouldn't work on this image). High pass radius was probably 30 or 40 (this will depend on your image size). The final touch was to adjust the blend-if sliders to cut down on the more displeasing effects.
I don't hold this up as an example of "how to copy Dave Hill's technique" or anything like it, but just as one source of ideas to play with. I'm not even sure I like it. You may want to click "all sizes" and see the original size (not much larger, but it's unmodified by Flickr's resizer and I think a bit better).
Lighting details (copied from "Focus"): I'm using Alien Bees strobes... the key light is a B800 with the AB beauty dish, just to camera right, a foot or two above the model, angled downward slightly. There are two more B800's, one on either side of her head, pointed straight at her, each with a 10 degree grid. A B400 with a 20 degree grid provides the soft spotlight behind her. Strobes triggered by sync cord and slaves.
I'll take a high pass
Getting a little creative here. I am experimenting with some different processing styles. I played around with the high pass sharpening here and added some texture.
I think it's always good to push yourself. Experiment. Play. And most of all, don't take it so seriously. Photography, like any type of art, won't please all the people all the time. And you know, I'm cool with that.
Strobist: 580EX II decreased out put -2/3, 45 degree angle
getting around barracuda web filter
sediment filter cartridge 5 micron
waterway pool filter parts
australia internet filter blacklist
polarizer filter review
npn cabin filter
high frequency bandpass filter