MT Shooter wrote:
naturepics43 wrote:
MT Shooter wrote:
After wondering about the source of the sensor in the new D7100 I checked the specs compared to the D3200, which has a sensor made by Sony. And the D5200, which has a sensor made by Toshiba.
The Sony sensor is 23.2 x 15.4mm and is 24.2MP.
The Toshiba sensor is 23.5 x 15.6mm and is 24.1MP.
The D7100 sensor is stated by Nikon to be 23.5 x 15.6mm and 24.1MP is size so that would indicate that it indeed does have the Toshiba sensor and shares it with the D5200. But The D7100 adds the Expeed 3 processor to that sensor for better and faster processing of that information.
Just in case anyone wants to know.
After wondering about the source of the sensor in ... (
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What's you take on the new AF sensor range? I'm a little confused. Does it not have expanded sensitivety between f5.6 & f8? I'm confused by the Nikon wording on their site.
quote=MT Shooter After wondering about the source... (
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What that does is give you more latitude on what lenses you can use a teleconverter on. Previously if a lens/tele combo exceeded F5.6 then it may still work but you would lose autofocus with the combo and would have to manually focus the lens. Now with the new AF sensor, you should be able to use a lens/tele combo that is up to F8 and still have Autofocus in the camera. The D800 has that feature and in theory it works, but in reality its questionable. I SHOULD be able to use my 1.4X TC on my 800mm F5.6 and still have AF, but when I mount them up the AF still will not work and I have to manually focus. Not really a big deal there as I usually manually focus that lens anyway.
quote=naturepics43 quote=MT Shooter After wonder... (
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I have read & re-read the sentence on the new AF capabilities of the D7100 & I think I might have figured out what Nikon is actually saying. The "new expanded"AF system will only work "accurately" when a TC is used on a lens with an "actual" aperature value of f/4 or faster. Using a 1.4 TC on ANY f/5.6 lens will still not produce accurate AF results. Am I correct? Looks to me like Nikon is pushing their new 70-200mm f/4 lens & their 2X TC as well as the D7100.
We won't really know until actually real world testing is completed, but in theory anyway, an F5.6 lens and a 1.4X TC SHOULD AF on the new sensors. As well as an F4 lens and a 2X TC. I do know my F4 lenses and the 1.4X TC will AF just fine as I have done that a few times.
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