) eine Funktion zur Korrektur optischer Fehler von Objektiven eingebaut. Adobe has built into its third version of the tool photographers in Lightroom and Adobe Photoshop CS5 (Camera RAW) is a function for correcting optical aberrations of lenses. Unfortunately, the selection of supported lenses is limited.

As mentioned in my presentation by Adobe Lightroom 3 above, this "one-click correction" is not only simple but also achieves very good results. Unfortunately, there are a few of my beloved lenses not in the list of supported lenses. Especially for my very frequently used Tamron zoom lens profile is not included. For this reason I have my work done with the help of Adobe Lens Profile Creator to create the necessary self-correction profiles. Nearly 400 different settings were necessary to produce the raw material for the three lens profiles. Above all, creating a useful profile for a super zoom lens requires some patience.

Result

LD bei 28 mm. The example shows a 100% cut of the right lower corner of a shot with the Canon EOS 50D and the Tamron AF 28-300mm f/3.5-6.3 XR Di VC LD at 28 mm.

The results speak for themselves. Clearly visible are the distortion and chromatic aberration (color fringing) in the original. After application of the lens profile, these errors are almost completely compensated.

Unfortunately, the portal is planned from Adobe for the exchange of privately created adjustment profiles (yet) and also the function for online submission of finished profiles to Adobe is not currently functional. und Adobe Photoshop auch der Allgemeinheit zugänglich zu machen, habe ich hier das Paket zum Download eingestellt. In order to still the profiles I created for Adobe Lightroom, Adobe Camera Raw and Adobe Photoshop to make even the general public, I have set the package to download. The profiles include the following objectives:

• LD Tamron AF 28-300mm f/3.5-6.3 XR Di VC LD
• Canon EF 28mm 1:2.8
• Canon EF 50mm 1:1.8 II

Download the correction profiles

• Fotomanisch.de Lens Profile Version 1 Packet

Instructions

After downloading the package with the lens profiles , extract its content to the appropriate destination directory for your operating system:

• Windows XP
  • C: \ Documents and Settings \ (username) \ Application Data \ Adobe \ CameraRaw \ lens profiles \ 1.0
  • C: \ Documents and Settings \ All Users \ Application Data \ Adobe \ CameraRaw \ lens profiles \ 1.0
• Windows Vista or Windows 7
  • C: \ Users \ (username) \ AppData \ Roaming \ Adobe \ CameraRaw \ lens profiles \ 1.0
  • C: \ Program Files \ Adobe \ CameraRaw \ lens profiles \ 1.0
• Mac
  • / Users / (username) / Library / Application Support/Adobe/CameraRaw/LensProfiles/1.0
  • / Library / Application Support/Adobe/CameraRaw/LensProfiles/1.0

Reference
Replace "(user name)" with your user name. When Windows XP is "C: \ Documents and Settings" translated into the operating system language. At a German Windows directory is named according to the "C: \ Documents and Settings".

More links

• 30-day trial version of Lighroom 3 (PC / MAC)
• Adobe Lens Profile Creator

Canon Inc., Japan, presents a world first for use in interchangeable lenses for SLR cameras: Image Stabilizer compensates for the hybrid (Hybrid IS), the camera shake during pivoting movements and shifts of the camera. USM zahlreiche weitere, bildstabilisierende Objektive entwickelt. Already in 1995, Canon was able to score with the idea of the world's first interchangeable lens for SLR cameras with an optical image stabilizer to minimize camera shake and after the EF 75-300mm 1:4-5.6 IS USM developed numerous other image-stabilizing lenses. The launch of the first objective with the new hybrid technology is planned for later this year.

Canon Hybrid Image Stabilization

According to Canon, the new Canon compensated hybrid IS technology effectively blurring that can arise from unintentional pivoting motions (rotation) and displacements (linear) of the camera. By camera movement (movement parallel to the main motif) occur mainly due to camera shake in Macro photography and close-ups such as tight portraits, which they accept. Even in standard situations cause sudden changes of camera angle often significant blurring.

Two sensors are used in the new technology is used: an angular velocity and an acceleration sensor. The angular velocity sensor detects and recognizes Mitziehbewegungen pan. He was already part of all previous methods for optical image stabilization. The acceleration sensor allows the detection of camera shake caused by moving the camera. It also uses the hybrid image stabilizer, a new algorithm that takes into account the readings of both sensors and lenses in the lens moves in such a way that both types of image blur are reduced considerably. This optimizes the previous image stabilization and is perfect, especially in macro photography, in the conventional image stabilization techniques have proven particularly difficult.

Already in the 80s started to Canon, the research for methods to compensate for camera shake. USM das weltweit erste Wechselobjektiv für Spiegelreflexkameras mit einem optischen Bildstabilisator zur Minimierung von Verwacklungsunschärfen. In 1995, then presented with the Canon EF 75-300mm 1:4-5.6 IS USM, the world's first interchangeable lens for SLR cameras with an optical Image Stabilizer to minimize camera shake. Since then the company has developed many other interchangeable lenses with image stabilization. USM , das Aufnahmen mit einer bis zu vier Stufen längeren Verschlusszeit ermöglicht. In the current range are 21 of these lenses, including the EF 200mm 1:2 L IS USM, the recordings with up to four stops slower shutter speed allows.

Canon provides for integrating the new Hybrid IS technology into a wide variety of products.

Technology Policy:

Image Stabilizer (IS = Image Stabilizer engl.):
Camera shake is a major cause of blurred images, especially when used without a tripod or when shooting with slow shutter speed in low light conditions. Canon's image stabilization technology, identified by the initials IS (Image Stabilizer for) in the product, uses a shift system for the detection and correction of image blur. By pressing the shutter button halfway, the image stabilization is activated. Tiny gyro-sensors register the lens vibration and send a signal to a microcomputer, which in turn controls a stabilizing element to compensate for the movements along the horizontal and vertical axes of the camera. To prevent unintended panning and tilting is interpreted mistakenly as camera shake, some telephoto and telephoto zoom lenses with IS mode to work second For some selected lenses the IS-2 mode is activated automatically. Takes a movement in a certain direction longer than a predetermined time, in such a case, the image stabilizer is turned off for this movement.

EF lenses with IS technology enable precise, brilliant images with up to four stops slower shutter speed than conventional lenses - ideal for shooting situations where flash photography is not permitted or desired.

Tags: image stabilization , Canon , EF , EF-S , EOS , Lens , technology

A day of great new announcements. Canon strengthens its range lens to another lens from the professional segment (L lenses).

The new lens with a fixed focal length of 24 mm (about 38 mm on an APS-C camera) consists of 13 elements in ten groups and to meet such high demands on the imaging quality. Two high-precision aspherical lenses with GMO technology (Glass Moulded Optics) to correct various aberrations such as field curvature and distortion, while the focus mechanism provides with moving elements for a consistently sharp detail drawing in the entire distance range. In addition, two UD lenses reduce the chromatic aberrations that can not be especially high in fast wide angle lenses always be avoided. With a maximum aperture of 1.4, the lens also for more difficult light situations. Additionally it is equipped with an ultrasonic motor for fast focusing.

Technical data:

• Aperture 1:1.4
• Aspherical and UD lens elements to correct chromatic aberrations
• Sub-Wavelength Structure Coating (SWC), which significantly reduces flare and ghosting
• Circular aperture for pleasing defocused effects
• Autofocus with ring-type USM, manual focus at any time
• Lead-free glass (RoHS compliance)
• Incl. Lens hood and lens pouch

The lens should be available in late November 2008. A price has not yet been determined at the current time.

bekannt. Addendum of 19.09.2008: Canon today announces a € 1499 price list for the Canon EF 24mm 1:1.4 L II USM known.

Tags: announcement , Canon , EF , fixed focal length , hardware , lens , technique

The Canon EF 50mm 1:1.8 II

Specifications

• Diagonal Angle of View: 46 °
• Lens construction: 6 lenses in 5 groups
• Number of diaphragm blades: 5
• Minimum aperture: 22
• Closest focusing distance: 45 cm
• Maximum Magnification: approx 1:6,6
• AF Actuator: MM
• Filter diameter: 52 mm

This lens it's fixed focal length of 50 mm on cameras with APS-C sensor has a small screen equivalent focal length of 80 mm. In connection with the initial aperture of 1.8 is for me an ideal portrait lens as it can be so freely put the subject from the background very nicely.

The fixed focal length of 50 mm has always been the "standard lens" as it can be photographed on a full frame camera such as the human perspective. The "II" signals in the lens name, that it is a revised model of the original EF 50mm 1:1.8. Canon has revised here but unfortunately in the negative direction. Thus, the Metallbajonet was swapped for a Kunststoffbajonet, as we have from EF-S 18-55mm know. In some Internet forums are also reports of a large manufacturing and distribution objectives with a strong back or front focus. Fortunately, I caught a good copy. The image quality is good.

Through the use of the plastic lens is lightweight (130g), but does it in his hand a bit "windy." greift, bezahlt gut das 12fache … Those who want more, however, and for example EF 50mm 1:1.2 L USM does, well paid 12 times ...

For this reason: For beginners looking for a prime lens ideal - but perhaps a right of return and agree in advance to test.

Tags: equipment , reporting , Canon , EF , recommendation , fixed focal length , lens , test

The Canon EF 28mm / 1:2.8

Specifications

• Fixed focal length 28 mm
• Filter diameter 52 mm
• Minimum focus distance 30 cm
• Construction: 5 individual lenses standing

This lens has a fixed focal length of 28 mm, which on my EOS 400D with respect to a focal length of about 45 mm on the small picture format is.

Why a fixed focal length but when "zooming" is much more practical?

Well, even prime lenses have their advantages: they are lighter and generally offer a higher image quality than zoom lenses. Much more important is that they are faster than zoom lenses. The fixed focal length allows a structure with fewer optical elements. As a result, less light is absorbed.

The Canon EF 28mm 1:2.8 is for me an ideal lens for light-poor environments in which objects in the "normal range" to be photographed. These are above all celebrations, family gatherings, parties and the like.

The lens has excellent sharpness and image quality. And optical vignetting error or are barely recognizable.

Conclusion: A good, affordable lens for special applications.

Tags: equipment , reporting , Canon , EF , recommendation , fixed focal length , lens , test