Tag Archives: Software

Controlling Highlights (A Napkin Drawing)

Earlier this month some friends and I got together in San Francisco, as we do every month, to share prints and talk photography. One friend shared prints of some beautiful night photographs he had made of a San Francisco subject. As we looked for little things that could make excellent prints even better we got to talking about highlights and how to control them. There are quite a few ways to do this, and I drew a little picture on a napkin to illustrate one technique I sometimes use to get a bit more detail out of areas that appear to be nearly pure white. The drawing looked a lot like the following.

Drawing on a napkin

It doesn’t look like much here, but trust me when I say that it made sense at the time. My friend picked up the napkin and took it with him as a reminder… and then a few days later contacted me to say he had lost the “napkin notes” from our conversation. He asked if I would mind describing the technique again. I said I’d do it — and three weeks later I finally got around to writing it up in this article!

Photographers using digital cameras have to watch out for over-exposing highlights. While we can recover a lot of detail from dark shadows, especially with current digital cameras, there is much less headroom at the bright end of the spectrum. When the exposure is too bright it is easy to end up with lost details in high luminosity areas. Go a little too far and you end up with that bane of digital photography, blown highlights, where the bright areas are simply pure white, leaving little or no hope of recovering the lost details. Continue reading Controlling Highlights (A Napkin Drawing)

Sharpening Basics: A Primer

(Minor updates to this article were made in February 2019.)

Sharpening is a very important step for optimizing digital photograph files. If you let your camera save images in the common .jpg format (a compressed image format that is often used on the web) the camera is applying sharpening to the image produced by the camera sensor. If you use the raw format (a high quality format that retains the original sensor data of the exposure) you will find that the photograph looks soft until you apply sharpening during the post production phase.

Sharpening optimizes the visibility of details that are already in your photograph. It is a matter of more clearly revealing what is in the photograph than  a matter of creating detail where there was none. Most sharpening works by increasing the contrast between light and dark areas in the image — what we call sharpening as actually more about adjusting the relative brightness of adjacent portions of the photograph.

Typical sharpening

The image above is an example of a small section of a photograph.[1] It is a “100% magnification crop” of a tiny area from a much larger photograph made with a high megapixel DSLR camera. A “100% magnification crop” is an image displayed so that each pixel — or individual picture element — of the original photograph is displayed using a single pixel on the screen. (Things are a bit more complicated than that when using modern high-resolution monitors, though I’ll let that description stand for now.) 100% magnification crops let us look very closely at what is going on in photographas “at the pixel level.” In this case, the full original image from which these small examples were extracted would be equivalent to prints at a width of roughly 10-12 feet.

The right side of the example shows this tiny section of the photograph before sharpening. The left side shows the results of fairly typical sharpening. Continue reading Sharpening Basics: A Primer

Adobe Photoshop Lightroom 4

Adobe has announced the release of Adobe Photoshop Lightroom 4 (which I will hereafter refer to as “Lightroom 4”), the newest update to the application. For many (probably most) photographers using Adobe tools for their photography, Lightroom is probably the best option. It provides quite a bit of image editing/processing power and flexibility, excellent tools for organizing large photograph collections, and a wide range of effective methods for outputting final images to the web, to video, to various types of print publication, and as photographic prints.

Depending on your situation, the update is available several forms:

(You may use these links to purchase from site-sponsor B&H Photo. Note: Links were broken earlier, but they have now been fixed.)

G Dan Mitchell is a California photographer whose subjects include the Pacific coast, redwood forests, central California oak/grasslands, the Sierra Nevada, California deserts, urban landscapes, night photography, and more.
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Text, photographs, and other media are © Copyright G Dan Mitchell (or others when indicated) and are not in the public domain and may not be used on websites, blogs, or in other media without advance permission from G Dan Mitchell.

Super Deal on Adobe Lightroom or Elements – $69.95 for 24 Hours Only

(Updated: Lightroom Elements is also available today at the same price. See below for link.)

If you have been considering Adobe Photoshop Lightroom 3 Software for Mac & Windows for your photography post-processing and organizing needs, right now might be a good time to buy it. Site-sponsor has the application on sale right now for only $69.95 – but the price is only good today only. You can make a purchase from B&H via the link in this post. (Note: This price expired on February 15, 2012.)

Update: Adobe Photoshop Elements 10 & Premiere Elements 10 for Mac & Windows is also eligible for the $69.95 pricing.

Lightroom can be the only photo processing software that many users will need, and for others it can be part of a workflow that includes  other software such as Photoshop. (This price is even a few dollars below the usual academic price, so student and faculty users may also want to take advantage of this offer.)

G Dan Mitchell is a California photographer whose subjects include the Pacific coast, redwood forests, central California oak/grasslands, the Sierra Nevada, California deserts, urban landscapes, night photography, and more.
Blog | About | Flickr | Twitter | FacebookGoogle+ | 500px.com | LinkedIn | Email

Text, photographs, and other media are © Copyright G Dan Mitchell (or others when indicated) and are not in the public domain and may not be used on websites, blogs, or in other media without advance permission from G Dan Mitchell.