Posted on by

The Incredible Change of the DSLR’s

Incredible Change of the DSLR's

In late 1975, couple of people knew that the world’s very first digital camera had been successfully tested – even within Eastman Kodak Business, where Kodak engineer Steven Sasson spent the bulk of a year establishing an 8 pound model that was the size of a small toaster. The very first photo taken by this first digital cam in December 1975, was in black-and-white and contained only 10,000 pixels– one hundredth of a megapixel. Each image took 23 seconds to tape-record, and a similar quantity of time to pop up for evaluation on a television screen. The age of digital photography had actually started. Naturally, digital electronic cameras of the 1990s were costly, low-resolution gadgets appropriate for specialized applications such as quickie photos you could send out by email or post on a web page (at the “low” ₤ 800) to news pictures of breaking events you might transmit to the editorial staff in minutes (at the stratospheric ₤ 25000 price point). In 2003 and 2004, Canon and Nikon finally made interchangeable lens digital SLR electronic cameras budget friendly with the very first Canon EOS Digital Rebel and Nikon D70 models, which cost around ₤ 800– with lens. DSLRs had actually been offered for years– but now the typical professional photographer could manage to buy one.

■ Full frame is not just for experts anymore.

So-called “full-frame” video cameras– those with 24mm × 36mm sensors sized the like the traditional 35mm film format– are becoming more typical and affordable. Sony currently uses a 24.6 megapixel cam body for less than ₤ 1700, and during the life of this book I expect to see comparable low-priced full-frame designs from Nikon, Canon, and others. Full-frame DSLRs are also prized for their low noise attributes, specifically at greater ISOs, and the more comprehensive perspective they supply with traditional wide-angle lenses. I’ll cover the advantages of the full-frame format later in this chapter.

■ Resolution keeps increasing.

Vendors keep upping the resolution ante to please consumers’ understanding that more pixels are always much better. In practice, obviously, lower resolution electronic cameras often produce exceptional image quality at greater ISO settings, so the megapixel race has been controlled, to an extent, by the need to supply greater resolution, enhanced low-light performance, and extended dynamic variety (the ability to capture detail in dark shadows, intense highlights, and every tone inbetween). The leading resolution cameras will not remain stalled at 25 megapixels for very long (I anticipate 32MP to become the brand-new high-end standard), but we’re rapidly seeing all the mid-level and entry-level electronic cameras migrate to 16– 21MP sensing units. You won’t see numerous electronic cameras with less resolution presented in the future. Obviously, Canon has announced a 120MP 29.2 × 20.2 APS-H (roughly 1.3 X “crop” aspect– more on that later), and a humongous 205mm × 205mm sensor that is 40 times larger than Canon’s biggest business CMOS sensor. (Real resolution of this mega-sensor hasn’t been announced– it will depend on how big the specific pixels are.).

■ ISO sensitivity skyrocketing.

Larger and more sensitive pixels suggest better performance at high ISO settings. Do you truly require ISO 102,400 or ISO 204,800? Definitely, if those ludicrous scores suggest you can get appropriate image quality at ISO 25,600. For concerts and indoor sports events, I’ve standardized on ISO 6400, and have really little problem with visual noise. In tough lighting conditions, ISO 12,800 isn’t out of the question, and ISO 25,600 (which permits 1/1000th second at f/8 or f/11 in some of the gyms where I shoot) is practical.

■ Expert full HDTV video is possible with a DSLR.

The opening title series of Saturday Night Live were shot in HDTV with Canon dSLRs. Director/cinematographer Ross Hockrow shot his latest feature film with those cams. The HDTV abilities of the latest DSLRs aren’t simply a camcorder replacement. If you’re a wedding event professional photographer, you can use them to add video protection to your stills; photojournalists can shoot documentaries; amateur professional photographers can get home from their vacation with once-in-a-lifetime still images and movies that will not put next-door neighbors to sleep, too.

■ Live View has matured.

Just a few years earlier, the ability to sneak peek your images on an LCD screen was a point-and-shoot feature that most digital SLR users could see no requirement for. Today, of course, Live View is a vital part of motion picture shooting, but enhancements like “face detection” (the electronic camera discovers and focuses on the human beings in your image), “subject tracking” (the cam has the ability to follow focus specific subjects shown on the screen as they move), and zoom in (to improve manual concentrating on the LCD screen) can be indispensable in particular circumstances. Something as simple as the capability to focus at any point in the frame (rather than just at the few set focus points marked in the optical viewfinder) can be extremely useful.

■ Sensor cleansing that works.

Each time you change lenses on your dSLR, you permit dust to get in the video camera body and, potentially, make its way past the shutter and onto the sensing unit. Every digital SLR introduced in the past few years has a “shaker” system built into the sensing unit that does a respectable job of getting rid of dust and artifacts prior to it can appear on your images. You’ll still need to by hand clean your sensing unit from time to time, but the task can be carried out monthly (or less often), instead of daily or weekly.

■ Image stabilization.

Camera motion contributes to fuzzy photos. Enhancing anti-shake settlement by developing it into a lens suggests you need to pay for image stabilization (IS) in every lens you buy. An increasing number of vendors are developing IS into the cam body in the form of a sensing unit that moves to counter cam motion. “one-size-fits-all” image stabilization does not work as well with every lens that can be installed on a camera, but suppliers are learning to change the amount/type of in-camera IS for various focal lengths.

■ Marginalia.

Other sensor enhancements have actually been talked about, and, in some cases, even implemented, without generating much enjoyment. Foveon continues to enhance its “direct image” sensors, with different red, green, and blue layers that enable each pixel to find among the primaries. (” Regular” sensors are segmented into a variety in which each pixel can detect either red, green, or blue, and the “missing” info for an offered photosite inserted mathematically.) But, couple of individuals are purchasing the Sigma cams that use these sensors. Suppliers continue to improve the small “microlenses” so they can focus assembling light rays on the photosites more effectively. CMOS sensors have basically replaced their CCD equivalents, for factors that no one appreciates any longer. None of these enhancements are as interesting as the others I have actually listed in this area.

Posted on by

Telephoto lens advice

Telephoto lens advice

 

What is a telephoto lens?

To put it simply, a telephoto lens is a lens that brings subjects up close. The focal length starts here at 80mm and has no real upper limit. Increasing the focal length changes the depth of an image significantly. The further the focal length moves into the telephoto range, the blurrier the background becomes and the larger the background becomes compared to the subject.

The area of ​​application

There are different areas of application for telephoto lenses, which depend somewhat on the actual focal length . A lot is possible between 80 and over 1000mm focal length .

Telephoto lens for portrait

The effect that telephoto lenses bring with them makes them great for portraits. They separate the person very well from the background and provide significantly more blurring in the background. You have to go a little farther away than you have to with a wide angle or normal lens , but you can clearly see the difference.

As you can see in the example images, increasing the focal length gives you significantly less background on the image. The second effect is the blurring. Although the picture was taken at 200mm with aperture 5, the background looks blurred and the subject stands out much better. However, since it is difficult to photograph a portrait at 200mm and there is often simply no space for this, a telephoto focal length between 80 and 130mm is often used in portrait photography .

Standard telephoto lens

The standard telephoto lens is in the focal length range up to 200mm and is used in travel, nature and sports photography. In this focal length range, you remain unnoticed as a photographer and can simply bring distant subjects closer. When buying, it is worth paying attention to a large open aperture and an image stabilizer, but more on that later.

Super telephoto lens

The super telephoto lens goes far beyond 200mm and is intended for large distances between the subject and the photographer. If something is very far away, it is worth using a super telephoto. The longer the focal length, of course, the stronger the effects that you get through the telephoto lens.

The cons / limitations

There is actually nothing in photography that has only advantages. It is of course the same with the telephoto lens.

Exposure time

The larger the focal length , the faster the exposure time has to be in order not to blur the image. In theory, as explained in the article on the exposure time , at 600mm, for example, 1/600 sec. That is extremely fast, especially in poor light situations, and naturally makes the picture dark. As a result, we usually have to go up with the ISO value or use a tripod.

An image stabilizer can of course also help here and so you can take photos with your free hand with 1/250 of a second, as in this example.

Weight

If you want to take photos from the free hand, you should be aware of one thing. Telephoto lenses are extremely heavy. Yes, not all of them, but you can quickly achieve a decent weight and of course a corresponding size that is not exactly easy to transport.

A tripod is extremely helpful here and you can take pictures of yourself in one place and from there. You can get close enough because of the long focal length .

Teleconverter

If you don’t feel like taking a huge telephoto lens everywhere with you, I have a tip for you. Use a teleconverter. With a telecoverter, the focal length can be extended, but this has disadvantages. I already said: everything has its disadvantages. Depending on the converter, the lens loses 1-2 stops of light intensity.

However, you can combine these and turn a fast 100mm lens into a 200 or even 400mm lens very quickly.

Posted on by

Camera Hardware Improvements for DSLR’s

Camera Hardware Improvements for DSLR's

Naturally, the terrific strides forward in digital SLR innovation (and digital photography in general) aren’t restricted to sensor advancements. Other elements of the electronic cameras, including lenses and devices, have seen significant enhancements, too. Here are some of the most important:

Digital Signal Processing (DSP) chips

As sensors get more and much better information, advanced signal processing chips have actually to be developed to transform the analogue information caught to digital format, while enhancing it to produce much better images. Some cams have two DSP chips to improve throughput even more.

Built-in High Dynamic Range (HDR) photography

Among the limitations of digital sensors is their inability to tape-record details in both the brightest highlights and darkest shadows at the same time. Some suppliers, consisting of Sony, are pioneering electronic cameras with the capability to snap off several exposures in a row, and after that integrate them to produce an optimized, “HDR” image. Within a few years, I expect that either sensing units will improve to the point where built-in HDR isn’t needed or, if not, this will end up being a basic feature in all DSLRs.

Global positioning system (GPS) tagging

Almost any DSLR can be fitted with some sort of GPS tagging device. There are a lot of reasons marking each picture with information on where and when it was taken is useful that GPS tagging need to be a basic feature within five years, also.

More common WiFi assistance

Anticipate to see more cameras with assistance for WiFi, either constructed right into the electronic camera, or, as is now the case, in the form of menu setup options (discovered in numerous Canon and Nikon DSLRs) readily available to anyone who inserts an Eye-Fi card in their video camera (The Eye-Fi company ceased business in 2016, yet, there are other alternatives). Today, you can upload your images immediately to any social media, immediately, as you shoot, if you lie near a WiFi hotspot. When “tethering” becomes more prevalent, your camera will piggyback onto the instant WiFi hotspots that will be offered by your iPad/tablet computer system, smart device, MiFi gizmo, or other gadget no matter where you are.

Storage innovations

More cams have double memory card slots, enabling you to shoot longer (utilizing “overflow” mode); replicate your images onto two cards for security or instant sharing (in “backup” mode); or do even more effective backup by saving RAW files on one card, and a JPEG variation on the other. Some electronic cameras allow you to choose which of your 2 cards will be utilized for, state, movies, which benefit from storage on “faster” memory cards (if the pair in your cam are unequal in speed). Naturally, capacities and speeds of the cards themselves are enhancing: 64GB Compact Flash and Secure Digital cards have actually lastly become budget-friendly, and new requirements with higher capacities and faster speeds, like SDXC have promise when more video cameras (and other gadgets) support them. Nikon, SanDisk, and Sony have unveiled specifications for a much faster type of Compact Flash sd card, too, with transfer rates of as much as 500MB/s, instead of the 167MB/s limit of the most current Compact Flash 6.0 requirement.

3D photography

Now we’re seeing 3D tv sets, and cameras from vendors like Sony that can produce 3D images using a single optical system (although you may have to view them in the electronic camera, doing not have an easy alternative playback system). My opinion is that 3D imaging will peak as soon as again really soon and then die away up until the next hardware innovation comes along that makes it slightly less impractical than today.

Other Bits and Pieces

Digital SLRs are ending up being smaller in size, particularly in the area of Four Thirds format cameras. More cameras have rotating LCDs that let you adjust your angle of view for Live View shooting or image evaluation.

Rise of the anti-DSLR

So-called electronic-viewfinder/interchangeable lens (EVIL) video cameras are changing DSLRs for some applications where compact size is valued. These cams do not have a mirror. Sony has already introduced slightly bulkier cameras that do have a mirror, but which use the non-moving, semi-transparent mirror to bounce part of the light to an auto-focusing part instead of to a watching system.