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Photos and Maths


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We all know that their are just 8 bit per colour channel. So it can happen that some areas of a picture are totally black or totally white,the resolution is just not enough. But what if we do a series of pictures: one for the normal parts, one for the bright and one for the dark parts? And let maths loose on them: suddely you get a way higher pseudo resolution...

 

hdr-76.jpg

 

Now the next problem arises: a computermonitor can't show these pictures :) so you have to scale them down. This allows a lot of nice and creative effects.

 

I can understand the theory and the low 8 bit resolution was pne of the reasons I stuck to analog night optics. So with this new techniquw, any one can give a hint which digital camera is goof hor this?

 

more pictures

http://www.smashingmagazine.com/2008/03/10/35-fantastic-hdr-pictures/

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I glanced at this article... it's a tutorial on HDR (he has a link for a German version of it, can only hope it's a good translation). He also talks some about the software and hardware. On page two he says what's needed for hardware (looks like best option is a camera that makes RAW files).

http://www.stuckincustoms.com/hdr-tutorial/

 

Oh, or try this sites "recommend" feature. By selecting "HDR" under features, it appears to list cameras that have built in HDR.

http://snapsort.com/recommend#!features=hdr

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We all know that their are just 8 bit per colour channel. So it can happen that some areas of a picture are totally black or totally white,the resolution is just not enough. But what if we do a series of pictures: one for the normal parts, one for the bright and one for the dark parts? And let maths loose on them: suddely you get a way higher pseudo resolution...

 

hdr-76.jpg

 

Now the next problem arises: a computermonitor can't show these pictures :) so you have to scale them down. This allows a lot of nice and creative effects.

 

I can understand the theory and the low 8 bit resolution was pne of the reasons I stuck to analog night optics. So with this new techniquw, any one can give a hint which digital camera is goof hor this?

 

more pictures

http://www.smashingm...c-hdr-pictures/

 

Outstanding effect

Kind of like Dorothy when she first steps into the Wizard of Oz in the classic pic, I think that was one of the first time color was used in film?

 

:)

 

gogo

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Amazing display of photography chattius. It seems as though an HDR can be made from any level of quality image. Some sample HDRs I've seen look amazing but when looked at closely are actually quite blurry. Not sharp images at all. That said... Using an HD camera would increase the effect of converting images to HDR. Being able to capture fine lines will really make an photo to HDR impressive. :)

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  • 3 months later...

Altstadt_Wetzlar.jpg

 

One of the historical marketplaces of the town I grew up: Kornmarkt, market for wheat, barley, ... Planed to post this before XMAS, but hen ... happened to DM :(

 

The house of my first love from school would be just behind the camera. Hope one day I will be able to do pictrures like this myself. But I am getting better with forest photography using HDR :)

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  • 3 weeks later...

An unexpected usage:

I try HDR mainly to see trees in a forest, to see details of trunks deeper into the forest where details got lost in the dark.

 

BUT:

Sorting out old family photos I saw a lot where the front people were bright and the people in the background dark. The main reason was a weak flashlight. But these photos are often analog black and white ones. So the definition range is wider as of digital cameras. (Thats why I still use analog cameras).

So I tried something: Doing 3 digital macro shots of a black and white photo with different light values, using a HDR program and suddenly the back people are a lot morte visible ;)

 

Wanted to share this with you in case you have old photos too.

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  • 5 months later...

Newest math toy for photography is the free math software octave with its image package. A picture is just a very big matrix at all which you multiply, add, substract divide ,....

This was the result our 14 year old got when I explained how mathematically sharpening would work. I am still the opinion that maths are a lot more fun if you see the results in real life.

The Leiterwagen (ladder wagon) was used for a long time in our area. Mainly cows used for pulling it, so ladders were used as side wands to save weight.

Ladders when to transport hay, stray

Canvas in between the ladders for corn

Ladders removed to transport wooden poles and trunks, secured with chains

 

Found the Leiterwagen when visiting my mother this sunday morning. Have to ask the owner if we can get it for our historical village museum.

 

 

post-4779-0-65767800-1374415971_thumb.jpg

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