As many of you may have heard, LensProToGo at our Concord, MA location over the weekend of June 13-14 totaling just shy of $600,000 worth of gear stolen. We've taken a full inventory and this is the list of items that was taken. While this list is quite large, it does represent only a portion of our inventory, so we're still able to handle customer orders with virtually no effect. Please take a look at this list and be wary of any used camera items for sale in the coming months.
Always ask to see serial numbers before purchasing. A link to a spreadsheet for those who would like to import it into their own database If you're able to provide any information as to the whereabouts of this gear please contact meg@lensprotogo.com.
Sep 04, 2012 Hi,Is there any way to find out how old is your Sigma lens using the serial number? I haven't found. Dec 13, 2007 Hi all I was trying to locate my serial number on a sigma lens to insure it however i cannot find it marked anywere? I checked on.
A histogram is a graph depicting the distribution of brightness values in the image. The horizontal axis shows the brightness level (from 0 to 255), with darker pixels towards the left side and brighter pixels toward the right.
The vertical axis shows the proportion of pixels at each level of brightness. By examining the histogram you can gauge the over-all exposure of an image. When the histogram is higher on the left side, the image is mostly composed of dark pixels, causing it to appear dark-either because the image is underexposed or because it is a dark scene such as night shot or sunset. When the histogram runs off the right side, the image will have many white pixels-either because the image is overexposed or because it is a bright scene such as the beach or snow. A histogram with a fairly even distribution of pixel values usually indicates that the image is well exposed, with good contrast. However, the histogram distribution of a well-exposed image will vary greatly depending on the subject. In 2013 Sigma introduced our Global Vision lens line along with the USB dock, an accessory sold separately allowing you to calibrate the AF Data of any Global Vision lens.
By connecting the USB cable to a computer, SIGMA USB DOCK enables photographers to update the lens firmware and adjust parameters such as focus. The adjustment is processed with special software (SIGMA Optimization Pro). The AF speed, focus limiter and OS function are also customizable for Sports lenses. To find out more information, consult the. Freemyapps Hack Tool Download. FLD ('F' Low Dispersion) glass is the highest level low dispersion glass available with extremely high light transmission.
This glass has a performance equal to flourite glass which has a low refractive index and low dispersion compared to current optical glass. FLD glass offers superior optical performance, equal to flourite, at an affordable price.
ELD (Extraordinary Low Dispersion) glass has lower dispersion characteristics than SLD (Special Low Dispersion) glass, which Sigma has been using in its APO lenses (and some non-APO lenses as well) for many years now. It has other advantageous properties as well. Please do not panic and do not return your lens.
In the majority of cases, there is nothing wrong with your lens; each lens is manufactured in exactly the same way and adjusted on an optical collimator which is used to calibrate the lens, check if all elements are aligned optically and to set elements at the proper focus. The issue of front and/or back focusing, most likely, comes as a result of the viewfinder focusing system which varies in each and every camera. This is a quick solution to this situation. If you are experiencing front and/or back focusing issues, we urge you use the “AF fine tune” or “Microfocus Adjustment in your camera’s menu to calibrate your lens to the camera.
If this feature is not available in your camera’s menu we will ask you to send the lens to us and we will rewrite the AF Data to accommodate for the variation in your camera’s viewfinder focusing system; essentially, calibrating your lens to your camera. This will be done within a 48 hours of receiving your equipment in our headquarters; 15 Fleetwood Ct. Ronkonkoma, NY 11779 Attn: Service dept. During the Warranty period of the product (subject to warranty eligibility), there is no charge for this service and we cover the cost of the return 3 day ground shipping back to you. In 2013 Sigma introduced our Global Vision lens line along with the USB dock, an accessory sold separately allowing you to calibrate the AF Data of any Global Vision lens. To find out more information, consult the.
The DG designation applied to most newer Sigma lenses indicates that the lens is especially suited for use with digital SLR cameras. The DG lenses feature improved (more even) light distribution from image center to edge, and incorporate the latest multi-layer lens coatings to avoid reflections of the sensors of digital cameras. This is important in digital photography, but is also useful in 35mm photography, especially when slide film is used. Lenses designated as DC are designed exclusively for use with digital cameras having APS-C size image sensors. They feature smaller image circles and often feature shorter focal lengths (e.g. 10-20mm DC, 17-70mm DC, 18-50mm DC, 18-200mm DC, etc.). The shorter focal lengths are desirable, because most digital SLR cameras have image sensors whose dimensions are considerably smaller than a 35mm negative (usually by a factor of 1.3X to 2.0X), making the lens’ angle of view equivalent to that of a longer lens on a 35mm cameras.
Many Sigma lenses make effective use of Aspherical lens elements. This technology allows one Aspherical lens element to perform the functions of two or more conventional spherical elements, thus allowing the lens to be made more compact and lightweight, while retaining high levels of performance. In the 20mm f/1.8, 24mm f/1.8, 28mm f/1.8 EX DG lenses, for example, these Aspherical elements eliminate the sagittal coma flare that accompanies large lens diameters. They effectively suppress the flare. In zoom lenses, where the wide angle range is extended - such as the 15-30 f/3.5-4.5 EX DG - distortion control can be enhanced by the use of Aspherical elements.
Macro lenses are those which can focus unusually close, providing large reproduction ratios (e.g. 1:3, 1:2, 1:1, etc.) Sigma offers more lenses with macro capabilities than any other lens or camera maker. The choice of which lens to use depends on the application. The shorter lenses, 50mm and 105mm provide greater magnification (reproduction ratio) capabilities (1:1 without accessory), and shorter working distances.
These are desirable for photographing inanimate or slow moving subjects or for copy work. The 105mm f/2.8 EX Macro lens can also be useful for portraiture. Longer Macro lenses like the 180mm f3.5 EX APO Macro can allow even greater working distance while still providing up to 1:1 reproduction.
Greater working distances are useful when photographing animate subjects which may become evasive or aggressive if approached closely by a photographer. Sigma offers several zoom lenses (e.g. 70-300mm F4-5.6 DG Macro) which combine reproduction ratios up to 1:2 with the convenience and versatility of a zoom lens. These can be invaluable for general photography including extreme close-ups, while carrying only one lens around.
HSM stands for Hyper Sonic Motor. It is a new type of motor used in some of Sigma’s newer lenses. The technology employed is similar to that used in certain lenses made by other camera manufacturers. The benefits of HSM system are: virtually silent autofocus function, very quick responsive autofocus function. Sigma is the only independent lens maker offering lenses with this technology.
We have a number of HSM type lenses for Canon and Sigma AF cameras, and we also have several HSM lenses for Nikon AF cameras (N55, N65, N70, N75, N80, N90, N90S, F100, F4s, F5, D1, D1X, D1H, D100 and D70, as well). The SD10 digital SLR camera has mirror lock-up capability. This can be very useful to minimize image-degrading vibration, when using long lenses or longer shutter speeds. Once this function is turned on, the mirror can be locked-up by simply depressing the shutter release button fully. Pressing the button a second time fires the shutter and returns the mirror to the normal viewing position. The mirror also can be locked up, and then the shutter fired remotely, if the optional RS-21 remote controller is used.
This sequence can be repeated indefinitely, until the function is turned off. The SD10 digital SLR camera has a unique feature pertaining to its viewfinder. It allows the finder to show 130% of the picture area. This is very useful, as it enables you to see what is happening outside the picture area, allowing you to anticipate people or objects entering the picture. This can be especially desirable for action photography, like sports, etc. The active picture area is visible at normal brightness, while the peripheral areas are masked with neutral density, making it easy to differentiate the two.
I recently purchased a new Sigma lens from a dealer. When I received the lens I noticed that it came without a warranty. When I inquired to the dealer about this, he told me not to worry as Sigma will still honor the warranty. I’m uncomfortable about this situation and am asking you to confirm this. The lens I received is a XXmm f/XX lens for my XXXXX brand camera, and has serial number #233XXXX. The lens you received has a serial number which has not been issued by Sigma’s factory in Japan. It appears that the lens you received is a 'Gray Market' lens, and has been tampered with having its serial number changed.
Distant Worlds Legends Serial Number. This would explain why you received no factory warranty card with the lens; the serial number printed on the warranty card at the factory, would not match the number on your lens. The Sigma lens should always be supplied with the factory warranty card, which is necessary to help verify the factory warranty.
This altered serial number has implications for the Sigma one-year international warranty, as well as any extended warranty, since tampering or modifying the product can cause the warranty to be voided. We suggest that you contact the dealer regarding this situation, immediately. Perhaps they will accept the lens back from you and supply you with a legitimate US import lens with full Sigma factory warranty. Each of the Sigma prime macro lenses offer up to 1:1 (Life-size) reproduction images, but at different working distances. For example, the 50mm lens provides the shortest working distance and the 180mm lens the longest working distance.
Therefore, if you are looking to do copy or reproduction work, the 50mm is likely to be your best choice. If however you photograph small insects, the 150mm or 180mm may be better suited as these allow you to stand a little further away from the subject whilst still giving you the same image. This may prevent disturbing the insect. All provide excellent optical performance, and are fully compatible with current 35mm AF and digital SLR cameras.
With conventional auto-focusing, auto-focus is driven by electromagnetic force of a DC-motor, gear and shaft mechanism. However, Ultrasonic Oscillation Energy operates the HSM lens and creates high-torque drive. Since this motor has no reduction gears, it has much quicker response to start and stop compared to DC- motor lenses. HSM system, available in select models, has virtually silent auto focus function, very quick responsive auto focus function and 'full-time' manual focus, wherein AF can be overridden without disengaging the AF mode altogether.