3/16/2023 0 Comments Sigma 150 600mm![]() AF is lovely, fast, quiet and precise, and locks on virtually instantaneously. The lens is heavy, but not a heavy as the DSLR version and using a sling to carry it certainly makes it less of a burden. Focusing is internal, so the length does not vary. The front element is oil repellant and if we look into the front of the lens we can clearly see the rounded 9 bladed diaphragm. Optical construction is 25 elements in 15 groups, including 4 FLD (Fluorite-type Low Dispersion) and 2 SLD (Super Low Dispersion). There is no dock available for Sony E mount. Using Sigma Dock UD-11 enables various custom settings to be made, but it is only applicable to L mount versions of the lens. Sigma claims 4 stops advantage using the OS system, and when tested that was found to be exactly right.įinally, a Custom switch gives the choice of off or one of two custom positions. The OS switch controls Optical Stabilisation, with the choices being off (for example, when used on a tripod), 1 (general purpose) and 2 (panning). There is also a focus limiter, with a choice of full range, 10m to infinity or up to to 10m settings. There are a series of switches around the lens barrel. I have seen it happen and it isn't pretty. Various hex keys are provided to ensure that all screws on the tripod mount are tight, thus avoiding the prospect of a large, heavy lens plunging earthwards. The collar allows the lens to be rotated whilst on a tripod so that vertical or horizontal shots can easily be made. The tripod collar is equipped with an Arca Swiss compatible foot as well as the standard 1/4” screw socket. The only limitation is the one-second delay if OS (Optical Stabilisation) is switched on. The AF is certainly very snappy and focusing on wildlife is not a problem. The AF is driven by a stepping motor and there is a high precision magnetic sensor that detects the AF position for potentially greater accuracy. The maximum magnification is 1:2.9 which is usefully close. Minimum focusing varies according to zoom position, 58cm (22.8 inches) at 150mm and 280cm (110.2 inches) at 600mm. Next up is the manual focusing ring, which is electronic and totally smooth in action. Some camera bodies allow these buttons to be customised to other functions. There are also two press buttons that lock the AF action whilst held. The S setting is probably the most useful in general shooting. There is an adjustment available via a small switch, enabling the zoom to be locked at the L setting, and the tension of the zooming action to be modified to T (tight) or S (smooth). Given the size and weight of the lens, the push-pull method of zooming can be very convenient. The zoom ring is wide and well ribbed and offers a very secure grip, but in addition, the front of the lens can be grasped and the lens zoomed using a push-pull action. ![]() There is a standard 95mm filter thread and a standard lens cap is also included. A large soft lens cap encloses the hood and is secured by velcro. Starting our lens tour at the front, there is a large round lens hood provided that is placed into position and then secured using a knurled screw. The composite material has the same thermal expansion properties as the aluminium. The dust and splash resistant body is solidly constructed, using Aluminium and thermally stable composite (TSC). However, as mentioned above, this is some 760g lighter than the equivalent lens for DSLR. ![]() Inevitably the lens is big and heavy, weighing in at a substantial 2100g. ![]() Sigma 150-600mm F5-6.3 DG DN OS Sports Handling and Features Choose used and get affordable access to kit that doesn’t cost the earth. Every month, visual storytellers sell more than 20,000 cameras and lenses to MPB. MPB puts photo and video kit into more hands, more sustainably. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |