Reference table: equivalent lens

D

divide

Well-known member
Here are a few equivalent lens (based on horizontal fov in degree), calculated using 3ds Max:

A: 5DMKii (36mm width)
B: Super 35mm 1.85 (24.89mm width) - Red One (24.4mm width)
C: D90 (23.6mm width)
D: cine 35mm 1.85 (20.95mm width)
E: GH1 (18.8mm width)
F: Super 16mm 1.85 (12.39mm width)
G: 2/3" Scarlet (10.1mm width)

lens are rounded to the closest mm

fov: A..B...C...D...E...F...G
66: 28 19 18 16 14 10 8
60: 31 22 20 18 16 11 9
55: 35 24 23 20 18 12 10
50: 39 27 25 22 20 13 11
45: 44 30 29 25 23 15 12
40: 49 34 32 29 26 17 14
33: 61 42 40 35 32 21 17
26: 78 54 51 45 41 27 22
 
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I don't get it, if the GH-1 is only slightly smaller than standard 35mm, then what's all the fuss about its crop factor? I think maybe the complaints are coming from 5Dll users....because this size sensor is way bigger than anything most folks here ever used (besides Red One users of course).
 
Ian-T said:
I don't get it, if the GH-1 is only slightly smaller than standard 35mm, then what's all the fuss about its crop factor? I think maybe the complaints are coming from 5Dll users....because this size sensor is way bigger than anything most folks here ever used (besides Red One users of course).
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not slightly, but half.

lack of satisfaction.

jacks off to 5d blurry background
 
I mean 35mm as I described in the table, but that reminds me I should add Super 35 to the table.

edit: done !
 
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@dcloud. Exactly my point. It just boggles my mind sometimes. But then I realize the only ones who are complaining are those who probably own the 5Dll.....which has way more DOF than standard 35mm film...too much actually. It's like how I've seen most people use 35mm adapters...the shallow DOF is always way overboard compared to what we see in Hollywood films.
 
dcloud said:
I think thats what other people are complaining about.. "its harder to get dof with something half the 5d"
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Not true. If you've shot 16mm or 2/3 chip then 4/3 will be very easy. Shallow DOF is overrated and with fast primes I don't envision many people complaining about DOF.

I take that back, people will always find a reason to complain... :thumbsup:
 
The 4/3 sensor is only a bit smaller than the RED One, and significantly larger than the Red Scarlet.
 
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4/3 is half the size of 35mm, the 5DII is full 35mm.
"More DoF" means (To me) deeper DoF

Instead of saying more or less DoF can we use proper photographic terms of Deep or Shallow DoF.

Remember DoF stands for Depth of Field, therefore more DoF means more, ie Deeper DoF
 
daveswan said:
4/3 is half the size of 35mm, the 5DII is full 35mm.
"More DoF" means (To me) deeper DoF

Instead of saying more or less DoF can we use proper photographic terms of Deep or Shallow DoF.

Remember DoF stands for Depth of Field, therefore more DoF means more, ie Deeper DoF
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I think you are mixing up terms here. The GH-1 is only slightly smaller than "standard" 35mm film (We are not talking Super 35mm). The 5Dll is much larger than "standard" 35mm. I mentioned above that it has "too much" shallow DOF (more than really needed for cinema i think). So..."standard"35mm shallow DOF is basically more than enough. That's why I am confused on why folks are balking at the GH-1 which is only slightly smaller than "standard" 35mm. It's basically the Red One..junior (as far as sensor size goes).
 
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It's only half the FOV of FF35. There is more than one way to shoot 35mm film, which changes the size of the image on the film, and thus the FOV. FF is only one way.
 
Ok...true. But answer this for me (you or anyone else)... Since we know that the GH-1 uses ALL of the sensor to create its image in 16:9 and the 5Dll does NOT (since it crops its image to make that very same 16:9)...then are we really talking half (in terms of the GH-1 vs 5Dll)? I didn't do the math...but with that information....I certainly don't think so.
 
Ian-T said:
the GH-1 uses ALL of the sensor to create its image in 16:9
Click to expand...

Do you mean, that actually all sensors are used as opposed to MKii which only use one sensor out of 2 (or 3..), and then downsize the picture using some bilinear or trilinear filter to match the Full HD size ? That would be fantastic, since it would mean very good sensitivity in low light (since several sensors are averaged).
 
divide...I'm not quite sure how to answer that myself. But what I have leaned about the 5Dll is that the 16:9 image that it creates is actually cropped where the GH-1's sensor (which was made extra wide) uses the whole sensor to create the 16:9 image. I don't know if that makes a huge impact but I would think that helps the GH-1's FOV a little. So the crop factor is really a little less than 2x's. And since the 5Dll crops its image anyways then I'm just wondering how much difference there really would be betwen the two cam's FOV. There will definitely be a difference...but how much. I guess the only way to tell is to do a side by side comparison.
 
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