sabato 22 agosto 2009

HDR Enhacement: Bringing Shadows and Highlights to Life!

Nowaday the use of HDRI tecnique is at the same time trend, art and abuse as well. In my opinion the big mass is able to mortify the true sense of this form of photography through unconscious experimentation and delibarate impressionistic representations of the reality. Fortunately a ristrected number of photographers/artists has been able to express the true potential of this tecnique with the porpuse of mimiquing the human eye perception of reality.



The three exposures used to generate the HDR file; (from top to bottom, from left to right) 0EV, -2EV, 2EV and tonemapped-HDR or LDR (low dynamic range) picture.

The picture I have posted is a good example of "natural-looking HDR" (it has been obtained from three RAW files, which have been converted in Tiff 16bit, and successively tone-mapped in Photomatic Pro 3.2, Deail Enhacer) . Indeed the final results is nothing else than the sum of the parts of the three first pictures having a well-balanced exposure. The final results doesn't show any over-saturation or halos and (hopefully) it is pleasent for the viewer's eyes.
The background informations showing the lake and the "San Salvatore" mountain are the results of the first two pictures [0EV and -2EV]. The upper car side comes from the first picture [0 EV], while the lower car part is contained if the long exposure [2EV]. Eventually the texture of the road pavement are contained in the slow exposure [2EV]. The three picture series have been shot with aperture f/11 on manual mode. I have focused on the right front lamp. The lighting condition were very poor, indeed it was a rany day. The three exposures have been shot in conditions of counter-light.















The LDR or tonemapped-HDR picture

The main advantage given by the HDR tecnique in this case is the fact that I didn't have to employ any external lighting device like lamps, flashes, wireless-flashes, electrical current generators, reflectors, umbrellas, ect. With three RAW pictures spaced by 2 exposure values (EV), I have been able to capture all the light for a balanced rapresentation of the subject of my picture! Not bad!

Gears:
Canon EOS 450D, EF-S 18-55 IS (kit lens), Shutter Release Cable, Manfrotto Tripod 725B

Software:
Digital Photo Profesional for conversion of the three RAW files in Tiff 16bit
Photomatix Pro 3.1: HDR file generation and Tonemapping.
Photoshop CS4: Noise Reduction with Noise Ninja plug-in (Luminance noise in the backgound); Unsharp Mask; some magenta colour in the monotono and greyish sky. That's all!


To see a picture version with higher resolution click on it, you will be redirected to my flickr account.



sabato 8 agosto 2009

Let's start!

Hi everyone! I welcome you to my new blog around the photography topic.

In this blog I will illustrate and explain the photographic techniques I have experienced in the last two years, since I have started shooting pictures with a DSLR (Digital Single Lens Reflex) camera.

I know there are plenty of blogs of this kind! But I promise I will try not to bore you and I will achieve this goal by proposing easy-to-understand and richly described tutorials, with the hope to inspire you to aquire new tecniques and enrich your photographic capabilities!

The topics I would like to propose space out from HDRI (High Dynamic Range Imaging), photo-stitiching, pano-HDR, digital editing Softwares (Photoshop, Lightroom, Photomatix, Autopano Pro, GIMP,...), photo editing tecniques with Photoshop (for instance the use of masks), Geotagging to photographic gears.

Furthermore I will profit to publish my latest picture of my Flickr account.

Sincerely
Nonac_eos