Thursday, December 17, 2009

Most Perfect Neckerchief Ever

SHARPNESS: where to hide the details


I learned that many good photographers, once these become, they become tight. Begin to keep their secrets to themselves, are less prone to confrontation and to share, unless you paid for it.
that I am not a photographer, I can afford to share what I learned, a little experimenting and a little looking on the internet.
I think that sharing always do well: raising the technical level of others and encourages everyone to do even better.

One technique that gives me more satisfaction working on digital photos is the ability to intervene on the sharpness of the shot.
Photoshop is able to make incredible leaps to our photos, in terms of image quality. In this particular case helps us to grasp the finer details of the shot.

You can follow various paths to reach this purpose: common to all these is the need to apply these techniques as the last step final (along with noise reduction) ... it is necessary and essential to apply these techniques at the end of your workflow ... and absolutely to be applied only after you have resized the pictures ...
fact if you apply the techniques for clarity or to reduce noise, before you change the resolution, negate the benefits that these techniques lead after shooting if you scale: this is because the pixels will be resampled again by software which will modify the impact of your actions.

These are two techniques that I know, practically equivalent to each other ... I have always used the technique a reality ... in a few months ago I discovered the technique 2, slightly more power and flexibility for the reasons which I will list later.
start .....

Technique 1: Lab Color

once prepared and completed the editing of your image as a last step, click on in Photoshop Image> Mode> Lab Color ( PS asks you to merge visible layers: give ok)

click on the channels palette and select the channel brightness.

your color image is now displayed in b / n.

go to Filter> Sharpen> Unsharp Mask.

applied the mask with values \u200b\u200bappropriate to your image (having low values \u200b\u200bof radius and threshold ) increase until you see the richness of detail (do not worry b / n).

After adjusting the amount of detail you want to emphasize go back to Image> Mode> RGB ... and your screen will be in color.

Following this method the colors are not affected because it will act only on the fine details of the channel brightness (white and black). If you compare the shot before and after applying this technique you will see major changes (actual pixels or view 100% zoom).
save your file.

Technique 2: Sharpen

The latest versions of PS have implemented the functions of conflict with Smart Sharpen.
If you have the latest versions of PS I recommend the second way.

Once your image ready, remaining time in RGB color space ( Image> Mode> RGB ) apply Filter> Sharpen> Sharpen ... with some details:

low values \u200b\u200bof range: from 0.1 to 0 for small images 0.7-0, 8 for large ones.
delete: select Lens Blur
and flagged to "correct" set the value
factor to your taste.

The benefit of using the technique 2 is connected to the possibility of applying the effect of a sharper image on a single level, separate from all others ... not at all levels joined together as in the case of technique 1.
This is a great advantage.

Why? Why can act selectively .

After completing the work on the image, I can merge all the layers, creating one.

Without this double layer the only visible and apply it only on this upper level, method 2.
After that apply a black mask layer (layer mask) and then hiding all the top level (on which I have applied the technique 2 for clarity).
Now I can act on this all-black layer mask, using a white brush ...
am selectively in this way that I prefer to see the details (use a large white brush and low hardness, painting over the black layer mask, which will become white just where you like).

Applying this sharpening, and leverage the details in a selective way you will get a more realistic and engaging with great control ... managing the appearance of artifacts, which is inevitable even with the best photo-editing software, in areas of 'image, where you do not need amplification for details.

leveraging the vast power of the mask layer can selectively act on other ... image parameters such as the saturation in this area have begun to apply it only in a targeted, not the whole picture.
How? duplicating the layer, saturating the top ... and playing with the mask layer and become visible only where saturation seems more appropriate.


The photo at the beginning, this has been addressed with this principle.
Assuming that the image was still quite good even at the start: great light of late afternoon, good visibility, tripod, very closed aperture (f/16 if I remember correctly), remote shutter release, mirror lock up, step in raw ... all care that make a difference anyway.

Once you start shooting is good touches to the software: Photoshop with its layers and the layer mask offers one of the most powerful tools that technology makes available to our digital images.

Know some more technical and use it in creative ways to help our shots, no doubt.




Monday, November 9, 2009

Asus Maximus Ii Formula Q9550 Overclocking





I have the realization of this shot of the bridge to Emanuele Bobbio " Juza " fatigued. One day of October, en route from its site, I imbattutto in announcing his workshop to Parcellara Stone, a wonderful vantage point on the rising Trebbia, Piacenza Apennines. This is very suggestive of a valley, crossed by the river bed with a very wide Trebbia, whose sides rise gently rolling hills that rise slowly but inexorably. This is a very wide valley than we have around Florence, well oriented in an east-west, taking advantage of the sunlight until late evening. An excellent location for landscape and macro photos.

consider Juza one of the most talented nature photographers in Italy, also in view of his age, a real phenomenon.

The weather did not help us much for the workshop: gloomy day, a lot of fog and lights that are struggling to break through. I thought it would be a complete fiasco and instead the workshop has been very interesting, both for the explanations of Emmanuel, and for the colleagues that I got to know the field.

Towards evening we moved from the Stone Parcellara in Bobbio, in the Val Trebbia. And that's where I got to pull out the shot of the day undoubtedly the most successful.

I have been helped by the slow, creating a silky water that enhances the very river. In addition, the fog over the country, with the lights of public, have made it really spectacular. According to the advice of
Juza: tripod, manual focus. In these circumstances the AF machine can not manage properly, unless you focus on a light source such as lamp posts. The exposure of the machine is the first element to be ignored completely for his lack of trust in the photos at night: take and evaluate the histogram until later .... according to the result will change the couple time / aperture for proper exposure more , repeating the shot. Iso low and remote shutter release (also self-timer and exposure postponed / mirror lock up) to minimize the vibration of the shot.
shooting. Raw and development in place with the final step in Lightroom 2 and Photoshop CS4 (intervention levels, curves, color balance, dodge / burn and saturation).