However, the world makes it into the camera by perspective, and with a shorter distance, objects grow faster in the foreground and shrink faster in the background. The cone sections of this cone determine the size of bokeh circles in the world. Of course, you would not use those lenses at equal distance if you aim for the same framing.Īt equal framing, your object distance will be proportional to the focal length, so the geometry of the cone from entrance pupil to a point in the subject plane, given equal framing, only depends on the aperture number. So at equal distance, the background will be most separated with the last lens. So you have 30mm/1.4, 50mm/1.8, 56mm/1.4 and the latter clearly is the largest. The size of the eye you are looking out is f/a where a is the aperture number.
would the 56mm f/1.4 Sigma or the 50mm f/1.8 Minolta give more bokeh on the Sony a6500 body?.
Vintage Minolta 50mm f/1.8 full frame lens (with adapter for Sony E mount) I am using Sony a6500 camera (APSC 1.5x crop factor body). It would have been nice if Sony used only 2 or 3 different filter sizes.I am trying to compose a detail shot where I want to get as much background blur as possible. Older Minolta lenses tend to have 49mm filter threads.Īdditionally, there are many lenses that have much larger filter threads than 55mm. Generally 55mm, but in reality, the filter sizes are inconsistent. The A-mount was designed by Minolta for the release of interchangeable lens autofocus cameras in 1985. This is due to Sony acquiring Konica Minolta's camera division in 2006. It is also identical to the Minolta A-mount. For used lenses, be ready to pay for when you come across a good deal as they don't last long.
To obtain the best price on what you want to buy, check prices on a few sites. That's why a smaller number of third party options are available and the lenses built by Sony are occasionally on backorder. The Sony A-mount also does not have a big market share. Due to the fact that there are Minolta 35mm cameras that use A-mount lenses, some upward pressure is put on the price of lenses. During the past several years, participation in film photography has been growing. Closed down a couple of stops and you will get tack sharp images.Īlso, be cautious when getting it as it is built in several camera mounts.Īlso available at: eBay, KEH, Adorama Used A-Mount Camera Lens Prices The focus ring feels great when manually focusing, and it also has autofocus.