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Guest Vadim Trofymenko

16mm camera lenses 35mm camera (1.6x) equivalent. Director's Viewfinder project.

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Guest Vadim Trofymenko

Hi, I'm using 16mm camera and thought it would be nice idea to use a canon dslr (550D, 1.6 crop) to frame my shots. Since good viewfinders for framing are quite expensive now. DSLR is perfect choice as it takes various lenses.

 

On my 16mm cine camera I have a zoom lens with following focal lengths:

10mm

15mm

20mm

25mm

30mm

40mm

50mm

60mm

70mm

80mm

100mm

 

Can anybody tell me please equivalents of this focal lengths to canon 1.6 crop?

 

For example, I had a look through 18mm canon lens on canon 550d with 1.6 crop and picture looks like 10mm on the 16mm cine camera. So is the difference 8mm between them, or what?

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Guest Vadim Trofymenko

Sorry folks my mistake!

 

18mm = 29mm on 1.6 crop sensor.

10mm = 10mm on 16mm movie camera.

So it's 19mm difference between them right?

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Guest Vadim Trofymenko

Need somebody to check this, is it correct?

 

16mm camera canon 1.6 crop full frame

10 29 18

15 34 21

20 39 24

25 44 27

30 49 30

40 59 36

50 69 43

60 79 49

70 89 55

80 99 61

100 119 74

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Guest Vadim Trofymenko

My math is rusty, but I think I finally got it. Let's take 30mm lens as a example.

Super 16 aperture =14mm.

30/14=2.2

2.2x30=66 (full frame 30mm)

66/1.6=41mm on ASP-C sensor! Got it suckers!))

 

Results:

Super 16 = 30mm

APS-C=41mm

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Guest Vadim Trofymenko

 

Alan, tool you've linked just compares cameras and focal lengths, but not calculates changes.

Edited by Vadim Trofymenko

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Guest Vadim Trofymenko

Yes but on completely different cameras. In short, I need same view from two cameras: Super16 and APS-C

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Well, according to that chart, S16mm is about half the size of APS-C. So if you are using a 10mm lens on a S16, the chart says you have a 61.7° field of view. If you compare that to APS-C, the same lens has a FOV of 98.9°. Now, to get close to that same FOV (61.7°) on the APS-C sensor, you will need to use a 20mm lens (it will actually get you a FOV of 60.6°, but who's counting.) It's all in the chart.

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