Lens Problems – Field Curvature

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If you've ever read a review for a lens, you'll probably have noticed how the review will show crops of an image of a test chart, comparing the resolution at the center of the image and the corners. And in most cases the corners are worse than the middle, sometimes considerably so.

For practical purposes, we can say that the corners of such a lens are soft. However, technically speaking the lens may actually have very sharp corners. The softness may be caused by field curvature.

Field curvature refers to when the plane of focus projected by a lens is not flat. This is the case for almost all lenses, though they differ in the amount and style of field curvature. In this article we'll look at it more in depth, and why in some cases it is not necessarily a bad thing.

Lens Problems - Field Curvature

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Written by Discover Digital Photography

March 29th, 2015 at 9:52 am

Nimble / Minimalist Photography – Doing more with less

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In recent years there has been a move towards smaller, lighter cameras. Some photographers have moved to using these cameras from much larger and heavier DSLR cameras, and so termed this use of smaller / less equipment as Nimble Photography or Minimalist (as in terms of gear) Photography.

It's not just about a reduction in the amount of photography gear they use though, it's also about a change in workflow. Spending less time behind the computer, more time shooting, and getting pictures out much faster is part of the movement.

Nimble / Minimalist Photography - Doing more with less

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5 Points Many Photographers Overlook

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Photography can be quite technical, with so many different camera settings and compositional guidelines to remember. Of course, with practice and experience you get much better at learning these things and putting them into practice without even having to think about it.

In this post I want to look at five important things that many photographers overlook. Some are actually quite important, others are more about optimizing the image making process as much as possible. But all five tips are things that can help you make (or display) better images.

5 Points Many Photographers Overlook

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Written by Discover Digital Photography

March 15th, 2015 at 10:37 am

Posted in Photography Tips

6 Simple Tips For Improving Your Color Photography

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Most photographers mainly work with color photography. Yet how often do you really think about color when composing an image? Color can be an important aspect in creating a strong composition. It can also lend a particular mood to an image. In this article we'll have a look at how you can use color to create strong images.

6 simple tips for improving your color photography

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Written by Discover Digital Photography

March 8th, 2015 at 10:39 pm

Who needs fast glass when you have high ISO?

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I've seen a few comments from some photographers stating that with the good high ISO performance from current cameras, there's no need to spend money on fast glass anymore. (If you're wondering what fast glass means, it means lenses with a large maximum aperture like f/1.4 or f/2.8, you can read more here: What does Lens Speed mean?)

In this article I want to take a look at this argument, and see if there is any truth in the statement.

Who needs fast glass when you have high ISO?

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Written by Discover Digital Photography

March 1st, 2015 at 3:14 pm

How to get a white or black background in your photo or video

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A plain white or black background can be very useful for both photography and video. It gives a very clean look, without any distractions to take the viewer's attention away from the subject.

A plain white background also works well where the intent is for the image or video to blend in with a web page or printed page that is also white. (The same for black, though white is a much more common background).

A plain background is often used for catalog style product photography. And it can also work well for portraits, still lifes, and studio-style nature photos. In this article we'll look at a few different ways you can create a clean white or black background for your images or videos (the technique is the same for both).

How to get a white or black background in your photo or video

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Written by Discover Digital Photography

February 22nd, 2015 at 7:50 pm

Why use a lens hood?

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If you own an interchangeable lens camera, you probably will have noticed that a lot of lenses sold for these cameras come with a plastic lens hood included. And for those lenses that don't include a lens hood, there are a wide variety of aftermarket designs available that you can purchase to add to your lens.

In this article we'll look at the benefits of using a lens hood, the different types of hood available, and also some disadvantages of hoods.

Why use a lens hood?

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Written by Discover Digital Photography

February 15th, 2015 at 5:12 pm

Can’t open RAW image files from your new camera?

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I've written before about the various advantages shooting RAW files with your camera has compared to shooting JPEGs. However, there is one big problem with RAW files that you are most likely to come across when you purchase a new camera.

This problem is that most camera manufacturers use a proprietary RAW format, and they change the file format with each new camera they release. This means that if your photo editing software is not up to date, then it won't be able to open the images as it doesn't understand the new format. In this article we'll look at this problem and how you can get round it.

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Written by Discover Digital Photography

February 8th, 2015 at 3:13 pm

5 Tips For Better Photos

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There's more to getting a great photo than just being at a great location and getting the correct settings dialed in on your camera. In this article I'll cover five tips that can help you get great photos, even if you're not at a great location (but help you really show off the location if you are). And these tips require no technical knowledge of camera settings, so even if you use your in auto mode, they will help you get better photos.

5 Tips For Better Photos

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Written by Discover Digital Photography

February 1st, 2015 at 3:11 pm

What is back / rear button focusing?

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Back button or Rear button focusing is a method of autofocusing used by many photographers. It decouples the autofocus from the shutter button, so a separate button on the back of the camera is used for focusing, while the shutter button is just used for taking photos.

In this article we'll look in more detail at the back button focus method. We'll cover why many photographers prefer this method over the standard half-press of the shutter button for autofocus. And also cover some situations where it doesn't work so well.

What is back / rear button focusing?

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Written by Discover Digital Photography

January 25th, 2015 at 10:27 pm