Hi Jock, PBD.
Not trying to be contrary, but I have seen it worked that way more often than not here, also just to add some more to the discussion, the 1/ focal length calculation for hand held minimum shutter speed, given no IS to complicate things, and not withstanding some people saying we should be using 1/ twice focal length.
(for joe average, not some of you guys that hand hold better than a cheap tripod!)
300mm lens on full frame 1/300s. Correct?
300mm + 2x converter i.e. 600mm on FF 1/600s
As above 600mm on 1.6 crop? Equivalent FOV of 960mm are we ok to shoot at 1/600s or are we more likely to have camera shake?
Edit Also the crop from the camera is a fixed physical fact, and surely exif really does mention the crop, not specifically in any lens calculation but it clearly lists camera make and model which determines crop!
Also many program's give us crop shooters the option to display lenses in crop or 35mm format, just saying.
Have a good day chaps.
Hello, this is.EXIF data does not mention or include any crop factor, however it does take convertors into consideration; this is why we use the focal length of the lens plus any added convertor. Technically speaking yes the crop factor exists, but is not generally used as part of the calculation.
But if I shot my 1DX distance is 300 x 2 = 600
The Suje this 180mm closer to 1d4, but not crop the image.
300 x 2 = 600 x 1.3 = 780mm.