Discussion in 'Photography Beginners' Forum' started by SethAlbritton, Jun 24, 2010.
If you want to find out what the 35mm focal length equivalent of a DX lens just times the focal length by 1.5. So 17x1.5=25.5. So a 24-70 is slightly wider than a 17-55.
I don't have a D700, but I play with it A LOT...I mean A LOT. (B&H FTW) But the noise reduction is terrific on the D700. ISO 6400 is completely usable even without any noise reduction.
I would love one except it doesn't have 100% viewfinder coverage. I want a D3s for Christmas
The benefits with full frame are low light performance, higher Mega pixel, and actual 1:1 representation of the lens focal length. So if you have a 10mm it will really be 10mm not 17mm as it is now with your DX camera. You also shouldn't really use DX lenses with a FF camera, it will only use part of the sensor. This is the limit of what I know about FF.
Yeah you're right. If you use a DX lens on a FF like the D700, D3, and D3s, you essentially are only using 6 of the 12 mp.
But you neeeeeed a D700.
I sure as hell do. Or even a 300s.
Not until you step up to a D3X (24.5 MP, $8000).
The D5000/D90/D300s and full frame D700/D3s are all 12.x MP. But, the individual pixels on the full frame sensors are larger.
Two wrongs won't make it right. Your focal length is your focal length and that does NOT change. What DOES change is the Field of View (FoV) by 1.5 in Nikon's case for FX versus DX.
That is correct. You can mount a DX lens on the D700, but instead of using the entire sensor to record, you only get ~5MP image.
This can be done with a wide angle lens on a cropped body. It doesn't necessarily have to be an FX body.
Here's an example for you. Hey, don't laugh at the subject or composition, they obviously weren't taken for that reason. These were taken using a tripod in the same exact position, using the same exact lens and the same exact settings. ISO200, f/4, 1/60s. The only change was from a D300 to a D700 body.
D300 - 35mm f/2
D700 - 35mm f/2
Why does the EXIF read focal length = 35mm on the D300 shot instead of 52.5mm? Because the focal length does NOT change. But please notice the difference in FoV. You'll also notice the DoF changes slightly between the two.
The EXIF on my camera lists both actual and equivalent.
Yes, but the EXIF equivelent focal length value is actually describing FOV, but in terms of equivelent focal length.
The actual focal length of the lens, is the actual focal length of the lens, is the actual focal length of the lens.
The first 2 are completely incorrect. Full Frame doesn't automatically give you better low-light performance or higher mega pixel count...
Now I don't know about Nikon...but on Canon cameras you can't even use crop-sensor lenses (EF-S) on full-frame bodies (EF). It's because the connector is slightly different, but I always assumed it was the same thing for Nikon.
The D700 *IS* great at those things though (great low-light performance and pretty high mega-pixel count...the latter of which is really unimportant for the most part)...but that's just a consequence of being in the pro-line of Nikon cameras.
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