- #SIGMA LENS SERIAL NUMBER CHECK HOW TO#
- #SIGMA LENS SERIAL NUMBER CHECK SERIAL NUMBER#
- #SIGMA LENS SERIAL NUMBER CHECK MANUAL#
#SIGMA LENS SERIAL NUMBER CHECK SERIAL NUMBER#
If you would like to register your lens purchase and serial number with us, please do so using the form below. As a friendly reminder, Amazon and B&H Photo Video are not authorized Canadian retailers of Sigma products. A list of our current authorized Sigma Canada dealers can be found in our Where to Buy section. Any Sigma product that is not imported by Gentec International or purchased from an unauthorized Canadian Sigma Dealer will not be serviced under warranty regardless of the service required. If your Sigma photographic lens is within the warranty period you can contact our service department at for repairs. Note: if you focused on infinity youd only get from about 15ft to infinity in focus (estimating here) or if you focused at 7ft you would not get infinity sharp.Sigma Canada and Gentec International stand behind their products with warranties that will ensure your products top performance. So what we can tell from this is that at f16 we can get from about 9ft to infinity in focus, but the trick is to focus in the right spot. Now look at the f16 on the right of the orange line and you see its at infinity. Now look at the middle scale and go to f16 on the left side of the orange line that is indicating the closest point that will be sharp when focused at that distance, using that aperture in this case it looks like about 2.75m (approx. Notice the lens above is set to f16 and it is focused at 5m (15 ft). If you have a prime lens, especially an older model you may see an extra ring of numbers on your lens such as in the image below (the numbers in the middle radiating out from the central orange line).
If you have all zoom lenses, you will not find this on your lens. If you have one of these it may look something like either of the ones below.
#SIGMA LENS SERIAL NUMBER CHECK MANUAL#
Just be aware that they will be manual focus and some of them you have to set the aperture on the actual lens itself.
You can pick up some great deals on older film lenses for specialty uses like macro, or fixed lenses with large apertures often for a fraction of the price of a new digital lens (you just need to get a special mount adapter ring to attach them to your camera).
Handy to know if you want to go to the camera store to buy a filter, or youre buying something online.īack in the days of film and manual focus lenses, the shutter speed was set on the camera and the aperture was set on the lens. You can also find that same number on the back side the lens cap, see below for this lens it is 77mm. That indicates the diameter of the front of your lens or the size of filter required to fit on it. They arent a true macro and you cant get in super close but its a handy thing to have if you want to get closer without the expense and weight of an extra lens.īoth will move if you manually focus your lens ( note: please remember to turn off auto focus if you do this because turning the focusing ring while autofocus is on can damage the gears and mechanisms inside your lens ). Some lenses have built in MACRO settings which allow you to get a bit closer. Look for the infinity symbol at one end, the other end will show how close your lens can focus, or its minimum focusing distance. What that means is that the maximum aperture on the 85mm lens is f1.8, but on the Tamron zoom it changes from f2.8 to f4 as you zoom the lens.Īt the lenses widest, 17mm, I can open the aperture to f2.8, but if I zoom all the way in to 35mm now my maximum aperture is only f4. On the Tamron you see 1:2.8-4 and on the 85mm you see 1:1.8.
My Tamron 17-35mm (notice the focal length range is shown there also) and my 85mm. Tips for getting sharper images or Why the 50mm lens is your new best friend ) This will vary from lens to lens and you may actually see a range of numbers such as 3.5-6.3. Larger apertures like f2.8 or even f1.8 are highly desirable because they let in more light and allow you to shoot in low light conditions without getting camera shake. There is no reason to feel stupid or embarrassed if you dont know this, it is sometimes confusing.įor example of your lens is a 70-200mm like mine you may see this which indicates Im at 100mm currently.
#SIGMA LENS SERIAL NUMBER CHECK HOW TO#
Theres a bit more to it than that but if you pick up a lens that has such a ring do some research on how to use it and youll get a lot more of out of your small apertures.
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