![]() ![]() Sony APS-C lens E 10-18mm (15-27mm) but 12-18mm in full frame a double duty small lens with OSS and ultra wide with threads for filters (if wanted) f/4 used for astro landscape in '14 before a 12mm was even thought about, also think of the many usages, lenses get heavy if a lot of them in a backpack. Full-frame and APS-C refer to the size of the sensor inside of our camera. Also using a panorama head you may not need a super wide lens. These lenses are still useable with an adapter, forever lenses. Bottom line study a maker cameras and lens options you may get stuck with the loyalty problem, lenses are forever but cameras change. You may like the options of another make/model but will have also goto that makers lenses. So loyalty with a maker maybe just to not sell a collection of lenses. The biggest thing for a beginner is realizing lenses are forever (so to speak) but cameras over time get better so upgrading maybe wanted so if you do your collection of lenses you will want to use with the same maker. Its the classic standard angle of view, and when shot at wider aperture. 1 Records in the APS-C or Super 35 mm size. When paired with an APS-C camera, the E 35mm captures a very similar angle of view to a 50mm on a full-frame system. Proof photographers do math in their heads while out and about. The cameras and lenses are interchangeable, but some caution is required depending on the camera/lens combination. Different Camera makers have different APS-C cropping magnifiers this example is for Sony. 50mm on APS-C is the same AoV as 75mm on FF, so get a 70mm or 85mm lens. 35mm on APs-C is the same AoV as 52.5mm on FF, so get a 50mm or 55mm lens. 24mm on APS-C is the same AoV as 36mm on FF, so get a 35mm lens. Going APS-C could also give faster AF using the center of the censor. 18mm on APS-C is the same AoV as 27mm on FF, so get a 28mm lens. Yes there are 1.4X and 2X teleconverters but if you have the APS-C button no need for a 1.4X because you get the 1.5X at the press of a button but use the 1.4x and press the button go from 600mm + 840mm (1.4) + 1260mm (APS-C). Like a lot of photographers using say a 200-600mm but goto APS-C at 600mm to get 900mm. Another piece of info is some full frame cameras have a function that can be assigned to a button for fast change is the APS-C function and you can then use a APS-C lens on a full frame or if you are doing long range image of birds and want a little extra closeness you can press the button and get digital extra millimeter making it use of more center of the sensor just like a longer lens would have that field of view. Did great making it simple to decide given it like a tornado in the head trying to keep things in line.
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