NEX-5n video crop factor

Apefos Adapter

Apefos Adapter

Well-known member
Hi everybody

I am interested about the video crop factor in 5n

I was doing some research to find the 5n video crop factor but i did not find...

I know the sensor is 1.5x crop factor for photos (from sony website) but i do not know if the camera add some adittional crop when shotting video (no information about).

I know the sony NEX VG20 camcorder is 1.5x crop for photo and 1.8x crop for video. In VG20 the 18-200mm lens is 27-300mm in photo mode and 32.4-360mm in video mode (35mm equivalent). (from sony website).

I just would like to know if someone can confirm or test the photo vs video mode in 5n to find if there is difference in what the camera can frame with the same lens in both modes.

Many thanks.
 
thanks for the reply, great comparison among those cameras, 5n seems to be great for its price range. but the article does not clarify well about the crop factor...
 
Apefos Adapter said:
I know the sensor is 1.5x crop factor for photos (from sony website) but i do not know if the camera add some adittional crop when shotting video (no information about).
Click to expand...
I don't notice any additional crop in video recording compared to photos. The horizontal field of view stays exactly the same.
 
only crop on the 5n is to change the sensor to 16:9 for video. sensor is not cropped on its width, just letterboxed to 16:9 format. the previous models (nex5 nex 3) had a crop of about 2 during video mode so it was like a 4/3 sensor.
 
richg101 said:
only crop on the 5n is to change the sensor to 16:9 for video. sensor is not cropped on its width, just letterboxed to 16:9 format. the previous models (nex5 nex 3) had a crop of about 2 during video mode so it was like a 4/3 sensor.
Click to expand...

this is great. in this way nex5n will have the smallest crop factor from a low budget camera for video, considering the letterbox for 16:9 format from a 1.5x sensor it will be about 1.6x crop factor.
 
not really. in cinema terms its almost no crop. super35 is only slightly bigger than the nex sensor.
 
the additional letterboxing doesn't increase crop factor

it's a crop (less part of the image stored, you lose the top and bottom) but it's not a crop (if you want to find "equivalent focal length", you still have to multiply by 1.5, not 1.6)

say you get your footage to the editor, and decide to include a crazy letterboxing, maybe 4:1; has this increased equivalent focal length? i.e. have you zoomed in? not really
but if you get your 16:9 footage and decide that you're going to deliver to 4:3 and crop on the sides, then yes, you're zooming in, and you're increasing the crop factor

summary: as long as the horizontal dimension is your active restriction, just divide 36mm by the horizontal size of active sensor area to get the crop factor
 
Samuel H said:
the additional letterboxing doesn't increase crop factor

it's a crop (less part of the image stored, you lose the top and bottom) but it's not a crop (if you want to find "equivalent focal length", you still have to multiply by 1.5, not 1.6)

say you get your footage to the editor, and decide to include a crazy letterboxing, maybe 4:1; has this increased equivalent focal length? i.e. have you zoomed in? not really
but if you get your 16:9 footage and decide that you're going to deliver to 4:3 and crop on the sides, then yes, you're zooming in, and you're increasing the crop factor

summary: as long as the horizontal dimension is your active restriction, just divide 36mm by the horizontal size of active sensor area to get the crop factor
Click to expand...

thanks for the explanation.

I was thinking i would need to use the diagonal as a reference for crop factor. if i use the diagonal as a reference, if the vertical or horizontal changes the diagonal changes also...
 
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