Does your Sigma lens have an International warranty? I am looking to buy one of your lenses and I’m working overseas for a couple of months. I wanted to check whether Sigma UK will still cover lenses brought from outside the UK?

Sigma lenses do come with a 1 year international warranty, however, the warranty is only honoured if VAT and duty have been paid on importation into the UK, otherwise it is an illegal import. Once these taxes have been taken into account, our customers usually find it better value to buy an official UK imported …

Is it possible to attach other manufacturers ‘drop-in’ filters into the filter holder of my 500mm f/4.5 lens?

The filter used in the 300mm f/2.8, 500mm f/4.5 and 800mm f/5.6 lenses have a 46mm filter size and there is no problem if you attach the filters of the other brands. However, if the thickness of the filter is over 5mm then you cannot attach this filter to its holder. In the case of …

What is the difference between 50/2.8 EX macro and 105/2.8EX Macro with Life Size Magnification?

The image of the subject, which is taken by both lenses, will have same magnification, however the size of backgrounds will be different. The picture, which is taken by 50mm/f2.8 EX Macro Lens, will have wider background if compared with the 105/f2.8 Macro Lens. Further, lens to subject distance will be different for making life …

How do I use the Macro Switch on my 70-300mm f/4-5.6 lens?

First, set the zoom control to its maximum telephoto position. Then, slide the Macro Switch to the “Macro” position. Now the focus ring can turn from infinity to macro range. (The macro switch cannot be changed to the “Macro” position if the zoom ring is set to other than the maximum telephoto setting.) While the …

Is it possible to use the OS function with a tripod?

The vibration caused by the firing of the shutter and the movement of the mirror is transferred to the tripod. The characteristics of these movements are different to those experienced during hand held photography and the OS system cannot compensate for them. If you wish to use a tripod, please switch off the OS function.

Auto Focus of HSM Lens for some Nikon Cameras does not work.

The AF control system for some Nikon Cameras does not work with HSM lenses. Sigma’s HSM lenses have full compatibility with F5, F4 series, F100, F90/N90, F90X/N90S, F80/N80 F70/N70, u/F65/N65,Pronea 600 and Pronea S. With other Nikon cameras, Sigma’s HSM version lenses can be only used in manual focusing mode.

I recently purchased a new Sigma lens from a local 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 honour the warranty. Is this true?

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 “Grey Market” lens, and has been tampered with having its serial number changed. This would explain why you received no factory warranty card with the lens; the serial …

I am looking to buy a macro lens and I notice Sigma offer different types. How do I choose between them?

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 …

What is the difference between built-in HSM lens and DC-motor lens?

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 has virtually silent auto …

What are the differences between the 70-300mm F/4-5.6 DG Macro and the 70-300 F/4-5.6 APO DG Macro zoom lenses?

The major difference between these two lenses is the optical performance. The DG model features a more conventional, achromatic optical design and uses one element of Special Low Dispersion glass (SLD). Its sharpness and contrast are rated very highly, however it is not quite as good as the APO model, which uses an apochromatic optical …

I would like to purchase a new camera of another brand, is it possible to change the mount of my previous Sigma lenses?

Sigma produces lenses with exclusive fixed mount systems; therefore it is not possible to change the mount of a majority of Sigma lenses. However with the new Mount Conversion Service, any of the Global Vision Lenses can be converted to a different mount system. More details can be found in the Mount Conversion Service information …