Re: Pre-order Friday: Sony FE 200-600 f5.6-6.3 G OSS ($1,998)
esanchez wrote:
DOF yes F6.75 -8.4 as far as gathering light F5.6 is F5.6 no matter the sensor. Advantage of APS-C sensor glass. You get more DOF at the same F stop than a Full Frame while still maintaining the gather light of the F stop selected.
randomguy wrote: esanchez wrote:
I'm always looking to adding more glass to my sony A7III. But this is when I find it difficult letting go of my Fuji system. I have an X-T2 and the 100-400 4.5-5.6. This lens is a 150-600mm FL equivalent with a 4.5-5.6 aperture. I wish Sony would have made this lens 4.5-5.6 also. I bought this lens used for $1,250. Best bang for you buck on the Fuji side. I'm sure in a year this lens will sell for $1,300-$1,500 used here which I believe it will be a great bargain. I just wish for a faster aperture. only a $300 difference between the Fuji and Sony when buying new. Still nice to see more Sony glass.
No, your Fuji lens is equivalent of a full frame 150-600 F6.75-8.4 lens. F5.6 on a full frame sensor receives more than a stop more light than on an aps-c sensor.
Following up on Holger's post, the amount of light hitting the sensor is a function of the length of time the light is hitting the sensor, the brightness of the light hitting the sensor, and the size of the sensor. In photographic terms the length of time is determined by the shutter speed, the brightness of the light is determined by the aperture, and the size of the sensor is determined by the format of the camera or any cropping you would do from that format. All of these factors can be described in stops of light. Each stop is a doubling of one of these factors. Twice as long a shutter speed is another stop of light. Aperture we are used to talking about in terms of stops, but each stop is twice as big as a previous stop (e.g., the hole for f/1.4 is twice as big as the hole for f/2), and when the area of a sensor that you are using is twice as big as the area of another sensor you are using you have an additional stop of light. A FF sensor is over twice as big as and APS-C sensor in area and gives you about a stop and a third more light hitting the sensor when considered as a hole at the same aperture and shutter speed as an APS-C sensor.
Jun 11, 2019 at 01:38 PM
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