Friday, 17 May 2013

Review Digital Camera World 05-18-2013

Digital Camera World
Focus Stacking: how to extend depth of field when shooting close up
May 18th 2013, 00:00

Shooting anything up close requires incredible patience and extreme precision. If your close-up photography isn’t sharp then you’re not only wasting pictures, but you’ve wasted hours of your time. In this in-depth tutorial we’ll show you how to use one of the most amazing Photoshop effects macro and close-up photographers can use: focus stacking.

Below we’ll show you step-by-step how to extend depth of field when shooting close-up by shifting your point of focus in multiple images, which you’ll later stitch together so you can produce images that are sharp throughout the frame.

Focus Stacking: how to extend depth of field when shooting close up

One of the best things about close-up photography is the wonderful softness that results from working with such a shallow depth of field.

Even at the smallest apertures the plane of focus will stretch to a couple of centimetres at most, and anything outside this range will fall off into beautiful bokeh.

At times, however, this can be a problem –especially if you'd like a completely sharp subject. Stopping down the aperture will increase depth of field, but sometimes this simply isn't enough to achieve sharpness across the subject from front to back.

The solution: fix the camera to a tripod and shoot several frames, each with a small shift in focus, then use Photoshop to combine the sharp areas to create a single pin-sharp image.

How to create a focus stacking effect: step 1 How to create a focus stacking effect How to create a focus stacking effect How to create a focus stacking effect How to create a focus stacking effect

We'll begin with a series of shots of a flower, captured with tiny incremental shifts in focus. We'll make global adjustments to all the images at once in Camera Raw, then combine the sharp parts using the Auto-Blend command in Photoshop CS.

Macro subjects usually look best against clean uncluttered backgrounds, but this isn't always easy to achieve when searching for the best angle.

We'll neaten up our finished flower by creating a new colour co-ordinated background, then use the Clone tool to remove a few messy areas. Finally, we'll utilise the High Pass filter for a great sharpening technique that works wonders on edges.

How to create a focus stacking effect: steps 1-2

How to create a focus stacking effect: step 1

01 Open in Camera Raw
Copy your start files into a folder on your hard drive, then open Adobe Bridge and go to the folder. Highlight the first image, then hold Shift and click the last one to select them all. Right-click over them and choose Open in Adobe Camera Raw to open the whole batch.

 

How to create a focus stacking effect: step 2

02 Remove the sensor mark
Click Select All at the top left. Now any changes will affect all the images. First let's deal with the sensor mark on the left. Grab the Spot Removal tool from the Tools palette, set Type to Heal and Opacity to 100%, then drag a small circle over the mark to remove it.

PAGE 1: How to create a focus stacking effect: steps 1-2
PAGE 2: How to create a focus stacking effect: steps 1-2
PAGE 3: How to create a focus stacking effect: steps 3-4
PAGE 4: How to create a focus stacking effect: steps 5-6
PAGE 5: How to create a focus stacking effect: steps 7-8
PAGE 6: How to create a focus stacking effect: steps 9-10
PAGE 7: How to create a focus stacking effect: steps 11-12
PAGE 8: How to create a focus stacking effect: steps 13-14
PAGE 9: How to create a focus stacking effect: steps 15-16
PAGE 10: How to create a focus stacking effect: steps 17-18

READ MORE

10 reasons your photos aren’t sharp (and how to fix them)
34 Photoshop effects every photographer must try once
Crop photos the right way: classic mistakes and how to avoid them
Adobe Lightroom: what every photographer needs to know about the ‘alternative Photoshop’

Canon EOS 100D review: does the Rebel SL1 / EOS 100D offer more than its size?
May 17th 2013, 10:06

The Canon Rebel SL1 / EOS 100D is the world’s smallest and lightest DSLR. But is its image quality up to scratch? Find out in our Canon EOS 100D review.

Canon finally introduced its own CSC last year with the Canon EOS M, but now it has also released the Canon EOS 100D – also known as the Canon EOS Rebel SL1 in the United States – which is the world’s smallest and lightest DSLR.

The Canon EOS 100D / Rebel SL1 is an all new DSLR that joins the EOS camera line-up, sitting between the EOS 1100D and EOS 600D. But what else does it offer apart from its size?

Here Amy Davies of our testing team takes a look at what this camera has to offer in her Canon EOS 100D review video.

Canon SL1 / Canon EOS 100D Review Video Transcript

This is the Canon EOS 100D, which at the time of launch is the world's smallest and lightest DSLR.

Canon has managed to shrink down all of the major components of this camera, but still retain an APS-C sized, 18 million pixel sensor at its heart.

This grip, although not as pronounced as on other DSLRs, still allows for good purchase, even when shooting with the camera one-handed. This dial here just next to the grip is used for altering aperture or shutter speed, depending on the mode you're in.

Despite the camera's small size, Canon has managed to keep a good button layout, with the majority being easily reached by the thumb on the right hand side. There's also a mode dial, which is used to access fully automatic modes, semi-automatic modes, and full manual modes.

You'll also notice here that the on/off switch can be pushed one step further to activate the movie mode on the camera. This makes it quicker to reach than having to spin the mode dial all the way around, and should make capturing those spur of the moment movies much easier.

We've seen "Creative Auto" mode before, and it helps new  photographers get the shots they want, without using complicated photographic terms. So for instance, using this setting to make the background more or less blurred is actually altering the aperture.

Creative Auto Mode also makes accessing the digital filters, such as Toy Camera effect easy. Although you can't shoot in raw format with digital filters, you can access a Extra Effect Shot mode which shoots one standard JPEG, and one with the effect added – useful if you decide you don't like the filter further down the line.

Bizarrely, although digital filters can be accessed when shooting in other modes, such as aperture priority, you can only reach them when shooting in Live View mode, and the option to use Extra Effect Shot is not available.

For better control, you could choose to use Picture Styles. A number of presets are already included, such as Landscape and Portrait, while there's also space for up to three of your own, useful if you want to create a custom setting, such as high contrast monochrome. You can also shoot in raw format too, for added flexibility.

On the back of the camera is a 3-inch touch sensitive LCD panel. This can be used for a range of things, including quickly accessing the Quick Menu. Simply tap this Q button here, then touch the setting you want to change. You can then use the scroll dial at the front of the camera to quickly move through the different options.

One of the good things about the touchscreen is that if you don't want to use it, you don't have to. Exactly the same operation can be achieved by using this button in the centre of the four-way control pad and the arrow keys here.

There are a lot of similarities between the button layout on this camera and other Canon DSLRs. So for instance, here we have a button to control exposure compensation, and another here to play back images.

The autofocus point can be changed in one of two ways, depending on whether you're shooting in Live View or not. Press this button here to choose from one of the nine AF points available. You can use the touchscreen, which is especially useful in Live View mode – in fact you can also touch the screen to fire the shutter. Tap the screen at the point you want to use and the camera will focus and take the picture. This is useful in a few different scenarios, such as when using a tripod.

Unlike the majority of compact system cameras on the market, the 100D has a traditional optical viewfinder. This sensor here automatically switches off the screen when the camera is lifted to the eye. It's worth bearing in mind however that the viewfinder doesn't offer a 100% field of view, something to consider when composing your images.

We had high hopes for the Canon EOS 100D at its launch, with its promise of similar image quality to other cameras we've been impressed by in the past. In reality, the 100D delivers excellent images which are bright, punchy and detailed from a range of different shooting conditions.

However, we can't help but feel that having the world's smallest and lightest DSLR doesn't mean too much when the rest of the system remains comparatively large and heavy. It'll be interesting to see how the sales figures of this camera compare with its CSC rivals.

PAGE 1: Canon Rebel SL1 / Canon EOS 100D Review
PAGE 2: Our original Canon Rebel SL1 / Canon EOS 100D announcement story

READ MORE

Canon EOS 700D / Canon T5i Review
Nikon D7100 review
10 common camera mistakes every photographer makes
49 seriously good Canon DSLR tips, tricks, shortcuts and time savers

You are receiving this email because you subscribed to this feed at blogtrottr.com.

If you no longer wish to receive these emails, you can unsubscribe from this feed, or manage all your subscriptions

No comments:

Post a Comment