Posts Tagged ‘Wide angle lens’
Sigma 10-20mm F3.5 EX DC HSM Review
The Sigma 10-20mm F3.5 EX DC HSM is a new super-wide angle lens offering a maximum aperture of F3.5 throughout the entire zoom range. Two ELD (Extraordinary Low Dispersion) glass elements and a SLD (Special Low Dispersion) glass element provide excellent correction of color aberration. Four aspherical lenses provide correction for distortion and allow compact and lightweight construction. The incorporation of HSM (Hyper Sonic Motor) ensures a quiet and high-speed AF as well as full-time manual focusing capability. The Sigma 10-20mm F3.5 EX DC HSM will be available in Sigma, Canon, Nikon, Pentax and Sony mounts.
Sigma Japan Press Release
SIGMA 10-20mm F3.5 EX DC HSM
2009.3.3 – The Sigma Corporation is pleased to announce the new SIGMA 10-20mm F3.5 EX DC HSM. This super-wide angle lens has a maximum aperture of F3.5 throughout the entire zoom range. Its wide angle of view from 102.4 degrees produces striking images with exaggerated perspective. The maximum aperture of F3.5 is ideal for indoor shooting and it enables photographers to emphasize the subject. Two ELD (Extraordinary Low Dispersion) glass elements and a SLD (Special Low Dispersion) glass element provide excellent correction of color aberration. Four aspherical lenses provide correction for distortion and allow compact and lightweight construction. The Super Multi-Layer coating reduces flare and ghosting. High image quality is assured throughout the entire zoom range. The incorporation of HSM (Hyper Sonic Motor) ensures a quiet and high-speed AF as well as full-time manual focusing capability. This lens has a minimum focusing distance of 24cm (9.4 inches) throughout the entire zoom range and a maximum magnification ratio of 1:6.6. The lens design incorporates an inner focusing system. It eliminates front lens rotation, making the lens particularly suitable for using the Petal-type hood. The Petal-type hood blocks extraneous light and reduce internal reflection.
* Vignetting will occur if the lens is used with 35mm SLR cameras or digital cameras with image sensors larger than APS-C size.
SIGMA 10-20mm F3.5 EX DC HSM
Case, Petal-type Hood (LH873-01) supplied
Sigma, Canon, Nikon, Pentax, Sony
*For Pentax mount, if the camera body does not support HSM, auto focus will not be available.
THE SPECIFICATIONS (For Sigma mount)
*Lens Construction:13 Elements 10 Groups *Angle of View:102.4°-63.8° *Number of blades:7pcs *Minimum Aperture:F22 *Minimum Focusing Distance Distance:24cm/9.4in *Maximum Magnification:1：6.6 *Filter Size:Ø82mm *Lens Hood:Petal-type hood *Dimensions:Ø87.3mm×88.2mm/3.4in×3.5in *Weight:TBD
*The apperarance and specifications are subject to change without notice.
OPTIONAL ACCESSORIES
SIGMA DG UV 82mm : 00-85126-92376-1
SIGMA DG WIDE CIRCULAR PL 82mm : 00-85126-92387-7
Buy the Sigma 10-20mm F3.5 EX DC HSM
Canon EF 24mm f/1.4 L II USM Review
The Canon EF 24mm f/1.4 L II USM Lens is, without question, Canon’s best-performing(optically and physically) and best-built 24mm autofocus lens. It is also Canon’s widest angle lens with an aperture wider than f/2.8 – a full 2 stops wider than all wider angle Canon lenses. This lens looks great, feels great and functions superbly.
The Canon EF 24mm f/1.4 L II USM Lens is shown above mounted on a Canon EOS 5D Mark II andCanon BG-E6 Battery Grip.
Since there was already a Canon EF 24mm f/1.4 L USM Lens, one would expect the new version to be an improvement over the original. So, the primary question on many of our minds was - what has changed? Let’s start with Canon marketing’s perspective – here are a couple of paragraphs found in Canon’s 5D Mark II White Paper:
“This new wide-angle lens offers far more than a cosmetic makeover to the highly acclaimed EF 24mm f/1.4L USM lens it replaces, and it retains the distinction of being the brightest wide-angle L-series lens in its class. Added professional characteristics include dustproof and weatherproof construction, with dramatic improvements to image quality provided by a total optical re-design and the application of Canon’s exclusive Subwavelength Structure Coating (SWC) to the inside surface of the large front lens element. This special coating is designed to minimize ghosting and flare, especially from extreme off-angle light rays. It combines with traditional Super Spectra multi-coating, to give the lens unprecedented resistance to internal reflections and flare.
Ultra-low Dispersion (UD) glass lens elements were also added in order to reduce chromatic aberrations, and a high speed CPU and improved algorithms make possible a faster and quieter autofocusing system. Combined with two aspherical lens elements, the lens offers significant improvements in image quality and contrast, especially at the outer edges of the image when used on full-frame digital SLRs. A circular aperture means beautiful out-of-focus highlights in backgrounds. This new lens targets the critical professional photographer, and should be especially prized by users of high-resolution full-frame digital cameras like the new EOS 5D Mark II.”
As expected, that sounds great.
I was mid-way through the Canon EOS 5D Mark II Review when the Canon EF 24mm f/1.4 L II USM Lens showed up. I couldn’t help myself – I had to immediately try it out.
I mounted the 24 L II on a 1Ds Mark III and spent some quality time with the ISO 12233 chart. But my first impressions were not overwhelmingly exciting. A re-test yielded the same results – slightly softer (less sharp) than the original 24 L. My normal procedure was used for this test: I usually shoot some AF test shots for a data point, but the results showing on the site for this lens were shot using externally-magnified Live View LCD manual focusing. The best of approximately 18 samples (per aperture setting) were added to the site. Disappointed, I went back to completing the 5D II review and ordered another 24 L II.
With the 5D II review completed and the second 24 L II in hand, I resumed testing. What I discovered was not a lens issue with the first copy, but a bug in Canon’s Digital Photo Pro software. DPP was adding “Luminance Noise Reduction = 2″ to all of my 1Ds III (and other Canon DSLR) images shot with noise reduction turned off. Even those I shot long ago. Apparently this bug was introduced in a recent update as DPP has never done this in the past. Since I was using my standard camera test settings and procedures, noise reduction settings in DPP were not something I was regularly checking. Adding noise reduction (even this tiny amount), reduces image sharpness – thus my initial disappointment. Issue resolved. From The Digital Picture
Panasonic Lumix DMC-FX38 Review
Panasonic Lumix DMC-FX38 Review
- Better Zoom Lens – FX37 get a 5X zoom lens (25mm – 125mm), meanwhile FX35 came with 25mm – 105mm. 25mm Ultra-Wide-Angle and MEGA O.I.S. image stablizer is still the same, and the photos produced by FX37 is as sharp as FX35. It is very good and not easy to get 1X longer zoom, while producing the same sharp picture!
- New processor – you can find Venus Engine IV on DMC-FX37, which is also used on DMC-LX3. The result is quite pleasing, faster startup time, faster auto-focus, fast image recording … everything a little bit faster
- New iA (intelligent auto) mode – a new AF Tracking function automatically tracks and lock the subject once the AF has been set even, after that, if the subject moves around, the camera will keep lock on and tracking the subject; easier to capture sharp photos.
- Better battery efficiency – you can take 310 photos on a single battery charge with FX37, compare to only 290 photos with FX35
- Photo Quality – FX37 equiped with the same CCD as FX35, as you can expect, photos from them are almost the same in quality. However, thanks to the new Venus Engine IV image processor, FX37 shows a little bit improvement on noise control and color reproduction.
- HD movie – same as FX35, FX37 can take 30fps high-definition 1280 x 720p motion images. You may connect FX37 to a HDTV with a Component Cable (available separately), and watch the HD moives took by FX37 directly on HDTV.
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Highlights:
- 10.1 megapixels CCD
- 25mm Ultra-wide-angle Lens and 5x optical zoom
- iA (Intelligent Auto)Mode Advanced with AF Tracking
- 2.5-inch LCD screen with Wide-viewing Angle
- HD Movie Recording
- Advanced MEGA O.I.S. (Optical Image Stabilisation)
Description
The Panasonic Lumix DMC-FX38 sees more and captures more with a brilliant 25mm ultra-wide-angle Lens empowered with a 5x optical zoom. Beauty is promised to be preserved with all the fine details exposed in a 10.1 megapixels resolution, satisfying the need for large prints or trimming photos in the ways you desire. Panasonic’s iA (Intelligent Auto) mode offers you the best shooting results by choosing all the optimal settings for you in any shooting situation.
Packaged inside this camera includes Panasonic’s MEGA O.I.S. to eliminate blurring caused by hand-shake, Intelligent ISO Control to capture high-speed movements, Face Detection to auto-adjust focus and exposure on faces and much more. In the iA mode, AF tracking is featured to continually track a moving subject and keep it in focus, so that a beautiful photo is produced whether subjects are standing still or moving about.
The 2.5-inch LCD screen with a wide-viewing angle makes it a pleasure and fun to take photos, letting you frame your shot in a variety of new and creative ways. The intelligent LCD functionality also automatically adjusts the brightness in 11 steps according to shooting conditions. The Panasonic DMC-FX38 can also record high-definition still images (1920 x 1080 pixels) and HD movies (1280 x 720 pixels, 30fps), which can later be viewed in the 16:9 aspect ratio on large-screen HDTV.
Sigma 10-20mm F3.5 EX DC HSM Review
Sigma 10-20mm F3.5 EX DC HSM Review
The Sigma Corporation is pleased to announce the new SIGMA 10-20mm F3.5 EX DC HSM. This super-wide angle lens has a maximum aperture of F3.5 throughout the entire zoon range. Its wide angle of view from 102.4 degrees produces striking images with exaggerated perspective. The maximum aperture of F3.5 is ideal for indoor shooting and it enables photographers to emphasize the subject.
Two ELD (Extraordinary Low Dispersion) glass elements and a SLD (Special Low Dispersion) glass element provide excellent correction of color aberration. Four aspherical lenses provide correction for distortion and allow compact and lightweight construction. The Super Multi-Layer coating reduces flare and ghosting. High image quality is assured throughout the entire zoom range.
The incorporation of HSM (Hyper Sonic Motor) ensures a quiet and high-speed AF as well as full-time manual focusing capability. This lens has a minimum focusing distance of 24cm (9.4 inches) throughout the entire zoom range and a maximum magnification ratio of 1:6.6. The lens design incorporates an inner focusing system. It eliminates front lens rotation, making the lens particularly suitable for using the Petal-type hood. The Petal-type hood blocks extraneous light and reduce internal reflection.