Understanding Depth of Field - It's Not All About Aperture Understanding your fundamentals is, well, fundamental to photography just like it is in anything else. In a previous article, I discussed the basics of aperture and exposure. Now, moving forward I want to address one of the key elements of aperture which is depth of field. All variables in photography have a give and take, and with your aperture as we gain light we also lose depth of field. But aperture is not the only variable the affects depth of field, and in this article we will take a look at those other variables. First things first, aperture does affect depth of field and in a normal shooting scenario aperture is your first consideration (if not only for most) when considering your depth of field. What Is Depth of Field? When you focus your camera on a subject, your camera will establish a plane of focus — basically an imaginary plane is set and the things on that plane are “in focus” (more specifically they are at the point of critical focus). What Else Affects Depth of Field?
How to Setup Canon 7D to take HDR shots / Bracketed Exposure Ok so you have heard the word HDR, Bracketed Exposure and Auto Exposure Bracketing. But what do they mean and how can you use your Canon 7D to take these sorts of shots. Ok first things first what is HDR, Bracketed Exposure and Auto Exposure Bracketing. HDR stands for High Dynamic Range, and it is a technique in which you merge several shots together all with a different dynamic range or exposure. which let you create the HDR effect or final images, check out the excellent video tutorials by Just4Photographers.com on using Photosjop. One of my favourite HDR photographers has to be Trey Ratcliff I think his work is astounding. A fantastic E-Book I recently bought How to do Trick Photography by Evan Sharboneau is amazing, is really takes some of ym article concepts to a whole new level, adn I recommend downloading and giving it a read, you will not regret it. HDR (High Dynamic Range), Bracketed Exposure, Auto Exposure Bracketing on the Canon 7D So before we can create any HDR 1. a. c. 2. a. c.
Camera Lens Quality: MTF, Resolution & Contrast Lens quality is more important now than ever, due to the ever-increasing number of megapixels found in today's digital cameras. Frequently, the resolution of your digital photos is actually limited by the camera's lens — and not by the resolution of the camera itself. However, deciphering MTF charts and comparing the resolution of different lenses can be a science unto itself. This tutorial gives an overview of the fundamental concepts and terms used for assessing lens quality. Everyone is likely to be familiar with the concept of image resolution, but unfortunately, too much emphasis is often placed on this single metric. To understand this, let's take a look at what happens to an image when it passes through a camera lens and is recorded at the camera's sensor. Example of line pairs which are smaller than the resolution of a camera lens. However, something that's probably less well understood is what happens to other, thicker lines. Canon 16-35mm f/2.8L II Lens(zoom set at 35mm)
Depth of Field Explained When you focus your camera, the area around the focal distance will also be in focus. But this can fall of to blur quickly, or slowly. The acceptable amount of in focus area around what’s you are focusing on is called Depth of Field. Depth of field can be an easy concept to understand, but practicing it isn’t always straightforward. Terminology Firstly let’s talk through some of the terminology so we understand all of the vocabulary related to Depth of Field. Depth of Field: The distance between the closest and furthest points in an image that are in ‘acceptable focus’.Narrow (or shallow, or small) Depth of Field: To have a shorter Depth of Field. Why Depth of Field is important? When you are shooting, Depth of Field can play a large factor in how your image will be rendered and can change the meaning and intention of the image. When and why you decide to choose these settings will be up to you, but some examples would be: Aperture and Depth of Field Focal length and Distance Compression
Long Exposure Night Photography – Step By Step Guide | Night Photography by Adam Currie One of the areas of photography that people get wrong is night photography, most people assume that you just use the flash and everything is fine, or that there is one group of settings for night photography. OK, this is fine for the odd snap shot of your friends or on a night out. But, if you want to get creative and make stunning images at night you’re going to have to do a lot more than just turn the flash on, when you have finished reading this you’ll be able to create images like this: In this article I am going to show you how to use a technique called Long Exposure. Say good bye to harsh lighting and dark backgrounds. Firstly, let’s pick a subject. Equipment Required The following list links to the equipment that I recommend and use. Now let’s get down to business. Setting Up Your Shot Switch your camera to manual. Now you have the camera focused you can proceed to compose the shot. Tip: Wide angles create a bigger impact than longer focal lengths. Setting The Correct Exposure
Camera Lens Explained | DX & FX Format Lenses from Nikon from Nikon In digital SLR cameras, the camera's format refers to the size of its image sensor. Nikon makes a DX-format sensor and an FX-format sensor. The DX-format is the smaller sensor at 24x16mm; the larger FX-format sensor measures 36x24mm which is approximately the same size as 35mm film. Different NIKKOR lenses are designed to accommodate the different camera sensor sizes. In the case of DX cameras with their smaller sensors, corresponding DX lenses have been designed, which are optimized for use with the DX sensor. The DX sensor makes possible the production of lighter, smaller cameras, but because it covers a smaller portion of the image projected by the lens, a 1.5x crop factor (so called because the smaller sensor crops the image compared to an image from a 35mm film frame) is introduced.
Photography 101: What Is Depth of Field? A common term in photography, depth of field is important to consider when creating any photograph. It is used at varying degrees to place either everything in the image into a sharp focus or to narrow the focus and highlight a subject, allowing other elements to be blurry. Photographers use depth of field to create certain effects and draw the viewer's attention to particular elements of the scene. It is important to understand how the aperture setting on your camera, the focal length of the...MORE lens, and the distance of your subject affects a photograph's depth of field. What is Depth of Field? Depth of field is the amount of your image before and beyond your focus point that will be in focus. Depth of field is determined by three primary factors: Aperture/F-StopLensSubject Distance While the camera can actually only focus on one tiny point in space, the depth of field determines how much of the image is in "acceptable focus" to the human eye.
The Camera Versus the Human Eye This article started after I followed an online discussion about whether a 35mm or a 50mm lens on a full frame camera gives the equivalent field of view to normal human vision. This particular discussion immediately delved into the optical physics of the eye as a camera and lens — an understandable comparison since the eye consists of a front element (the cornea), an aperture ring (the iris and pupil), a lens, and a sensor (the retina). Despite all the impressive mathematics thrown back and forth regarding the optical physics of the eyeball, the discussion didn’t quite seem to make sense logically, so I did a lot of reading of my own on the topic. A photograph is the illusion of a literal description of how the camera ‘saw’ a piece of time and space. Photography is not about the thing photographed. Basically in doing all this research about how the human eye is like a camera, what I really learned is how human vision is not like a photograph. The Eye as a Camera System
Depth of Field explained What is depth of field? Understanding depth of field is one of the first big hurdles in photography. Knowing how your aperture, focal length and focusing work together to affect depth of field and control what appears sharp in your photos will give you incredible confidence as a photographer. What is 'depth of field'? A camera can only focus its lens at a single point, but there will be an area that stretches in front of and behind this focus point that still appears sharp. This zone is known as the depth of field. Because depth of field has an impact on both the aesthetic and technical quality of a picture. A classic example is when you're photographing a landscape, where generally the most desirable outcome is to capture detail from the foreground to the horizon. Other times, a shallow depth of field will be preferable. OK, so where do I find the depth of field control on my camera? Remind me what you mean by 'wide' aperture… OK, so how does the type of camera affect depth of field?