Sony 85mm F1.4 ZA Carl Zeiss Planar T*
Tamron SP 90mm F/2.8 Di VC USD 1:1 Macro
33 facts in comparison
The vignetting result from the DxOMark set of metrics. Vignetting refers to when the brightness of an image changes from the center towards the edges, resulting in darkened corners. A result of 0 is perfect and the image will have no vignetting. Tested with Nikon D7000 or Canon 7D. Source: DxOMark.
Canon EF 24mm F/2.8 IS USM
With full-time manual focus, you can move the focus ring whilst it is in AF (autofocus) mode. This means that you can make manual adjustments once the AF has finished, without changing to manual mode.
A smaller aperture reduces the amount of light reaching the sensor. This is important in bright conditions where a wider aperture could result in your image being overexposed. Another advantage is that with a smaller aperture you get a greater depth of field, and can keep all of the image in focus.
Pentax HD DA 560mm F5.6 ED AW
With a wider aperture the sensor can capture more light, helping to avoid blur by enabling a faster shutter speed. It also provides a shallow depth of field, allowing you to blur the background to focus attention on the subject.
Samyang XP 50mm f/1.2
Device is protected with extra seals to prevent failures due to any kind of weather.
This is the closest distance that the lens can focus. A shorter minimum focus distance allows you to get closer to your subject, and is particularly important when doing macro photography.
Zeiss Batis 40mm f/2 CF