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Old November 21st, 2005, 11:46 PM   #1
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Canon lens for my Letus35

Just wanted to kn if Canon FD 50mm Lens 1.8 any good use
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Old November 29th, 2005, 12:52 PM   #2
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I used one for a while until i got my 1.4 and it worked great. Breathed a lot, but looked fine. Next stop: f1.2 (pun intended).
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Old November 29th, 2005, 12:55 PM   #3
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Ben, that was a bad one.
Good job.
:)
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Old November 29th, 2005, 01:25 PM   #4
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Hey all, after being pipped so many times recently I have just won a FD 50mm 1.4 , 85mm 1.8 an 135mm 2.5 been a big day on the bay 98 the lot..

next on the list a fast wide..!

Any ideas, is the difference betweeh 28 and 24mm that noticeable? the prices certainly think so..

Oh the 50mm 1.8 is a good starter - check out Declans footage posted recently..
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Old November 29th, 2005, 01:46 PM   #5
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The difference between focal lengths becomes increasingly apparent the shorter you go. The difference between 130mm and 135mm is negligible, but the difference between 20mm and 24mm is a big one. I have both a 24mm and a 28mm and there's definitely a discernable difference. Not huge, but it's there.

Also keep in mind that the shorter you go, the more important it is to have a large aperture. A 24mm F2.0 lens gives equivalent depth of field to a 50mm F4.0 lens. That is pretty dark. So you have to be careful, otherwise you'll buy yourself a vignetting machine.
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Old November 29th, 2005, 02:01 PM   #6
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This is very true.

Most 28mm lenses are F2.8, but can you get a lower F stop number? I guess you can, but at what cost?
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Old November 29th, 2005, 02:11 PM   #7
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Quote:
Originally Posted by Quinn OConnell
Hey all, after being pipped so many times recently I have just won a FD 50mm 1.4 , 85mm 1.8 an 135mm 2.5 been a big day on the bay 98 the lot..
I was probably one of the 'pippers'. won a 1.4 on ebay two days ago. 49 (sigh)

still, look forward to it arriving!
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Old November 29th, 2005, 02:49 PM   #8
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There are some 28mm and 24mm F2.0's out there which are very inexpensive. Then there is the Sigma 20mm F1.8 which is superior but not as cheap, though still very inexpensive compared to anything else out there. It works far better than a one-element wide angle adapter on the front of your camcorder lens. It is the one worth spending the money on, because there are plenty of inexpensive 50-55mm F1.2-1.4 lenses and 85mm F1.5-1.8's out there.

I also recommend a constant aperture zoom (can hold F2.8 all the way through the lens' focal length range) for "run and gun" work. Commonly found lenses are 24-70mm, 28-70mm, and 28-100mm.

I wish someone made a 17-100mm F2.8 but no such luck! I would even settle for a 20-100mm F2.8, but still no luck :)
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Old November 29th, 2005, 03:00 PM   #9
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One more thing,

to put some real numbers to my "noticeable difference" remark earlier, here are some fairly standard angle of view numbers:

400mm: 6 degrees
300mm: 8 deg
200mm: 12 deg
135mm: 18 deg
100mm: 24 deg
80mm: 30 deg
70mm: 34 deg
60mm: 40 deg
50mm: 46 deg
40mm: 57 deg
35mm: 63 deg
28mm: 75 deg
24mm: 84 deg
20mm: 95 deg
17mm: 104 deg
15mm: 110 deg
12mm: 122 deg
Fisheyes: 180 deg!

I would give credit to the source but sadly that is not a cut-and-paste list; it's typed up from my many days spent indulging my lens fetish.
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Old November 29th, 2005, 03:42 PM   #10
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Bill,

Great list. But can you explain a bit further to put sense into them numbers? I understand what you mean, but how is that measured? Is it measure from the image plane? Like the 50mm lenes, is it 46 deg. either side of the optical axis, or the total from both sides? Am i making sense?
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Old November 29th, 2005, 04:00 PM   #11
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Quote:
Originally Posted by Bill Porter
Fisheyes: 180 deg!
Obviously the total angle, thanks.
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Old November 29th, 2005, 04:14 PM   #12
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*Homer Simpson voice* Mmmm....360 degree lens....
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Old November 29th, 2005, 04:34 PM   #13
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Where can i get this 360 deg. lens? Well it have distortion? ;)

Hehehe, sorry:D
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Old November 29th, 2005, 05:13 PM   #14
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No, but it does exhibit vignetting in the corners.
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Old November 29th, 2005, 07:29 PM   #15
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Hhhmm. They must call this "the eye of God" lens. Knows all, sees all.
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