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SIMPLE HIGH PASS FILTER : PASS FILTER


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Simple High Pass Filter





simple high pass filter






    pass filter
  • A band-pass filter is a device that passes frequencies within a certain range and rejects (attenuates) frequencies outside that range. An example of an analogue electronic band-pass filter is an RLC circuit (a resistor–inductor–capacitor circuit).





    simple
  • A medicinal herb, or a medicine made from one

  • having few parts; not complex or complicated or involved; "a simple problem"; "simple mechanisms"; "a simple design"; "a simple substance"

  • elementary: easy and not involved or complicated; "an elementary problem in statistics"; "elementary, my dear Watson"; "a simple game"; "found an uncomplicated solution to the problem"

  • any herbaceous plant having medicinal properties





    high
  • a lofty level or position or degree; "summer temperatures reached an all-time high"

  • A high point, level, or figure

  • at a great altitude; "he climbed high on the ladder"

  • A notably happy or successful moment

  • A high-frequency sound or musical note

  • greater than normal in degree or intensity or amount; "a high temperature"; "a high price"; "the high point of his career"; "high risks"; "has high hopes"; "the river is high"; "he has a high opinion of himself"











One centimeter butterfly




One centimeter butterfly





for people looking for those numbers:
Canon Rebel XS (1000d) with Sigma 70-300 apo-dg-macro lens
shot @ 300mm @ f/5.6, 1/125s, ISO 200, manual focus

For people looking for story:
believe me.. i am not kidding.. this butterfly was less than l centimeter wide (and its sitting on simple grass twigs!)

It was almost impossible to spot it in the flight but fortunately it settled down very close to the ground for a few mins... had to get down to it level in the dry & itchy soil (i can still feel the itch on my elbows!)... get as close as my 300mm focusing width can allow.. autofocus was making so much noise without anything big enough to focus that this guy would have been scared.. so manual focus!!

for people peeping into the dark-room
Post processing in GIMP (why pay or hack when you can do all for free!):
- UFRAW conversion,
- little crop (to get my rule-of-third and leading-lines)
- selective high-pass filter with masking,
- selective saturation, highlight recovery
- little cloning to remove distractions on the grass-leaf
- USM

Border / signature with FastStone Photo Resizer (can't live without it!)

for people looking for faults :D (i am the first one to do so!)
if you look full size, black halo around the butterfly caused by selective high-pass-filter and selective highlight recovery

for people still continuing to read... i am eager to hear your comments











Sunrise




Sunrise





So, I walked outside this morning and the sun was just starting to rise. I grabbed the camera and took a few shots, none of which I was really happy with in the end. I think the problem was partially due to bad composition but I'm not really sure beyond that. Perhaps I should have used the flash. Anyway, this is a pretty simple edit. I cropped out the bottom and then a small chunk of the left side and added two duplicate layers. The first layer got a high pass filter then the second an "old photo" affect. Finally, I brought down the opacity of the "old photo" layer so the colors just barely start to peak through.









simple high pass filter







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Post je objavljen 27.10.2011. u 00:30 sati.