Converting RAW files for HDR

Important thing we can not allow any software used to do the RAW conversion on any uncontrolled interference in our file conversion parameters. In the case of Photoshop, this means avoiding the "auto" in the fields: Exposure, Shadows, Brightness and Contrast, and to prevent the white balance settings, "Auto " and "As Shot" white balance if it was set to "Auto" for shooting.

How many exporures for HDR?

Amount of radiation needed obviously depends on the scene, but before that in many cases insufficient 3 exposure in increments of 1.66 or 2 EV Minor strokes do not recommend, it makes no sense to play in an EV. In theory, would make a measurement point in the brightest and darkest parts of the scene, the quantity needed to calculate radiation, etc. In practice, the usual (using, D-SLR) doing an irradiation, roughly in line with the measurement matrix, and then check the histogram if it points to the clear shift towards overexposure / underexposure change parameters and perform another trial. If it is correct as far as erasing pictures, run bracketing, attach the hose and doing a series. If possible, you may want to change the way the camera's way of making a series of bracketingowych so as to begin from underexposure, and the middle performed exposures, and ended with an X-ray (-, 0, +). The Canon's default is different (0;-;+) and then hinders orientation. The pictures of a strong light source in the scene usually requires more of the radiation, I am often in such cases, the fifth.

Shooting for HDR

The basic condition for obtaining an image in HDR technology is to have several versions of an image of the same scene made with different irradiation parameters (possibly several TIFF files, or JPG also obtained from the various call one RAW file.) The best solution is to implement a number of irradiations of the same scene camera mounted on a tripod. Mounting must be as stable, so that the images did not differ from each other the frame, even minimally.
The individual exposure should be made as soon as possible because of the changing landscape elements during such as clouds, waves, moving in the wind, branches or podrygująca boat on the waves. Forgive me, I had to mention it even though it probably did this kind of situation does not meet. Know that I am "łódkofilem" And nothing will change.

Bracketing

Bracketing, an option available on most SLRs involving the execution of a series of shots of the same scene at a fixed aperture and the changing times, with the specified increments. This stroke and the number of shots depends on the type of camera, for example, in Canon EOS 5D is 3 frames with a maximum 2 EV increments, the Nikon D200 to 9 shots with maximum increments of 1 EV. This feature originally had another use but has proved very helpful in the performance of individual radiation needed to complete the picture in the HDR.

Dynamic Range Increase

Dynamic Range Increase (DRI), increase the tonal range, the method consisting in the appropriate application to each other and contain several layers of masking the same scene exposed in different ways. The most important difference, in a simplification, of course, is that DRI is a lot in practice, replacing one image with different stretches, these parts are relatively large, sometimes it can be an inch piece of heaven, while the HDR changes are occurring in each pixel image.

High Dynamic Rang

High Dynamic Range (HDR) - method of obtaining images of a much wider tonal range than recorded by the camera in a single frame consists of creating a file, usually about 32-bit color depth, formed by the combination of several images of the same scene in different ways irradiated So that the individual frames correctly register all ranges, from light to shadow. Creating such a file requires several input files, their number depends on the tonal range of the recorded scene, from my experience that 90% of cases, sufficient 3 files recorded in increments of about 2 EV, in practice, we highlight three of the same time changing the aperture relations x0.25, x1, x4.

Dynamic Range

Dynamic Range (DR), Tonal Range, the ratio of the image brightness of the party's brightest to the darkest, he is limited on the one hand by the possibility of recording equipment (eg digital camera sensor) and secondly by the possibility of an image display device (monitor, printer). This ratio for the average matrix is 500:1 (~ 8 EV), for the printer 250:1 (~ 7 EV), and a monitor 500:1 (~ 8 EV) The approximate course, have to illustrate the concept. The values found in the real world date back to 100 000:1 (~ 17 EV) and our eye sees 10 000:1 (~ 14 EV).

How much can one earn from microstcok photography?

So we start from scratch. Assume that at the beginning we can add 20 images per month. So we have 20 pictures published and accepted in our protfolio. Everything now depends on how they like the community, photos, and more specifically the buyer.

Defines a very simple parameter, namely the number of downloads pictures in a month. (Abbreviated to DL`s / M - Downloads Per Month) This ratio determines the success or the flap of our newly added photographs. I think that for someone who starts his adventure with photography photos score above 10 DL`s / M is a success.

Okay, but how does it compare to earnings? From my current experience has shown that averaging a sold image translates into a 0.8 earned $. So, sold 100 photographs give us $ 80. On www.istockphoto.com is a lot of pictures which DL`s / M exceeds the value 100

Lenses from Nikon

Recently I've been researching Nikon lenses. I'm a Canon user, but some of my friends always try to persuade me to check out Nikon. I don't think I will, but must admit they do have some good stuff. I mean once you're chosen your brand it's rather hard to change (not that I really want to!). But say I did want to chnage to Nikon, I'd have to sell all of my Canon gear and buy everything from a scratch. That's why it's so important for those companies to attract beginner photographers and automatically make them loyal customers.

Pinhole Camera Basics

Camera obscura, also known as pinhole camera, is nothing more than a cubic box with a hole on one side and the other screens available. The walls are painted from the inside in black. This reduces reflections. In this box, on the one hand, it is a small hole through which light enters. On the opposite side is a dull fast, which shows scaled down and inverted image.