Sigma just announced its new digitally optimized fisheye lenses. The new Sigma 15mm F2.8 EX DG Diagonal Fisheye Lens and Sigma 8mm F4 EX DG Circular Fisheye Lens are equipped with a new multi layer coating technology that reduce both flare and ghosting.
Sigma 15mm F2.8 EX DG Diagonal Fisheye Lens PRESS RELEASE
Digitally optimized circular fisheye auto-focus lens – Sigma 15mm F2.8 EX DG DIAGONAL FISHEYE
This digitally optimized diagonal fisheye lens is equipped with a new multi-layer coating technology that reduces both flare and ghosting. This also ensures an accurate color balance and high definition results.
Mark D. Segal compared both Canon EOS 24-105mm F/4 L IS USM with Canon EF 28-135mm IS USM and wrote:
“My findings and comparison of key specifications: Insignificant vignetting with either lens; The L lens has generally superior contrast; The L lens displays generally less chromatic aberration, but some exists in the same places where the 28~135 had more; At 105mm it is hard to see much difference in resolution even at 100% magnification; At 28mm and 50mm the differences of sharpness/resolution are obvious even at f8, which should be in the range of the “sweet spot” for both lenses; 24mm really expands the image area considerably compared with 28mm; at the telephoto end 105mm is enough for me, considering that I also have a 70~300mm; Maximum telephoto aperture of f/4 versus f/5.6 (twice the amount of light).”
Another great way of using your photoshop to apply a sephia effect to your photographs.
This tutorial was written by Keren-R, a devianArt member. You can visit the tutorial page here
Photografix.org has a very useful tutorial on histograms which you often find on your digital camera or imaging software such as photoshop. The histogram is the small graph you can view on your LCD, it is used to view whether your photo is over/under expose/contrasted.
Sony UK has issued a service advisory for its 21 digital cameras including the DSC F717 and DSC P10. The problem is with the LCD panel and/or electronic viewfinder showing either a distorted image or no image when used in camera mode.
Sony UK Service Advisory
Thank you for your support and patronage of Sony Digital Still Cameras.
It has recently come to our attention that a limited number of Sony Digital Still Cameras that incorporate an image sensor device, CCD Chip, manufactured from October 2002 through March 2004 may exhibit the following condition:
Haje Jan Kamps, a DeviantArt member, wrote a good tutorial on “framing in portraiture”
“I spend a lot of time commenting on stuff on DA. One of my pet peeves is bad framing in portraiture. Not bad because it is different from the way I would have done it, but bad because some people don’t even think about framing or cropping. Lighting, the model, and other technical stuff is easy enough: Any monkey and his dog manages to set up a scene and point a camera at it. The trick is to somehow lure some context out of a photograph. This can be done in many different ways, but framing and/or cropping is the easist way to do it, in my opinion.”
After Nikon and Fuji, now it’s time for Canon to release their Service Advisory Notice. If you have one of these cameras: PowerShot A60, PowerShot A70, PowerShot A75, PowerShot A300, PowerShot A310, Digital IXUS V3, Digital IXUS II, or Digital IXUS IIs with the problems such as images not to appear or appear distorted, then you can contact them and get your camera repaired for free.
Service Advisory: Image Phenomena Due to CCD Malfunction
Metropolitan Museum of Art, New York, will be having a new exhibition looks at how photography was used by those attempting to capture evidence of the paranormal. “The Perfect Medium: Photography and the Occult” opened Tuesday and runs through 31/12/2005.
Canon 300D, Hoya IR filter, Canon EF-S 18-55mm, f/8, 1/2s
The exhibition features about 120 photographs from collections all over the world, and arrives in New York after a showing in Paris. Most of the images date from about the 1860s until World War II, a period when people were greatly interested in spiritualism and the paranormal. Using photography to document any images or incidents became a popular way of trying to get proof
Sigma has just announced two new digitally optimised tele-converters. Sigma claims the new APO Tele Converter 1.4x EX DG and APO Tele Converter 2x EX DG will maintain the high quality of the master lens also keeping the high-speed Auto Focus even when these teleconverters are utilised.