Consistent Bokeh?
Sep 17, 2016 06:51:17 #
JayHT wrote:
Do all lenses from a particular vendor with the same aperture and regardless of the focal length, say Canon 2.8 lenses, produce the same level of bokeh? My experience with this issue is not conclusive.
Thanks for your input.
JayHT
Thanks for your input.
JayHT
No.
Sep 17, 2016 07:28:03 #
Sep 17, 2016 08:22:05 #
SharpShooter wrote:
What's wrong with donuts?!?!
Breakfast of champions.
I love donuts....., yum, yum.
For breakfast, yes......, for Bokeh......, NO!!!
SS
Breakfast of champions.
I love donuts....., yum, yum.
For breakfast, yes......, for Bokeh......, NO!!!
SS
Sep 17, 2016 08:52:52 #
mas24
Loc: Southern CA
Do macro 2.8 prime lenses of 1:1 magnification in the 90-105mm have good bokeh?
Sep 17, 2016 09:26:54 #
mas24 wrote:
Do macro 2.8 prime lenses of 1:1 magnification in the 90-105mm have good bokeh?
For answer see page 1 and 2 of this thread/post..
Sep 17, 2016 10:14:17 #
Sep 17, 2016 11:04:35 #
First of all, the shape of the aperture, determined by iris blades, is only a small factor in how OOF areas are rendered, determining only the shape of the highlights and edges. Bokeh is much more about the optical design of the lens, and the levels of aberrations, particularly spherical. Circles of confusion should be the same size for lenses of similar focal length and aperture, but how those COCs look is what bokeh is about.
Here, for instance, are two shots with 55mm f1.2 lenses. The first is with a Nikkor, the second with a Cosinon. You can see that they have quite different looks.
Next is the same scene shot with a 75mm f1.9 Wollensak Oscillo-Raptar, which has a deliberately designed negative field curvature for photographing oscilloscope screens. Then a Ross Wide Xpres 5 inch f4 lens, designed for aerial reconnaissance in WWII.
Then a scene shot with the Ross lens in the sheep market in Kashgar, China, and a flower shot with the front half of a Taylor and Hobson 3 inch f1.8 projection lens, which has a strong positive field curvature. Then a shot with the famous Meyer Trioplan f 2.8 triplet design, and finally a lily shot with a 1 inch f1.9 C mount Ross lens for 16mm film, followed by a Taylor Taylor and Hobson Cooke Ivotal 25mm f1.4 cine lens. You can see that bokeh is much more than the number of aperture blades...
"Level" of bokeh? Bokeh is a quality, not a quantity. And who is to say what is "good" bokeh and what is "bad" bokeh? Modern custom seems to prefer smooth OOF areas completely devoid of character, but there is a movement afoot which has the absolute opposite view.
Here, for instance, are two shots with 55mm f1.2 lenses. The first is with a Nikkor, the second with a Cosinon. You can see that they have quite different looks.
Next is the same scene shot with a 75mm f1.9 Wollensak Oscillo-Raptar, which has a deliberately designed negative field curvature for photographing oscilloscope screens. Then a Ross Wide Xpres 5 inch f4 lens, designed for aerial reconnaissance in WWII.
Then a scene shot with the Ross lens in the sheep market in Kashgar, China, and a flower shot with the front half of a Taylor and Hobson 3 inch f1.8 projection lens, which has a strong positive field curvature. Then a shot with the famous Meyer Trioplan f 2.8 triplet design, and finally a lily shot with a 1 inch f1.9 C mount Ross lens for 16mm film, followed by a Taylor Taylor and Hobson Cooke Ivotal 25mm f1.4 cine lens. You can see that bokeh is much more than the number of aperture blades...
"Level" of bokeh? Bokeh is a quality, not a quantity. And who is to say what is "good" bokeh and what is "bad" bokeh? Modern custom seems to prefer smooth OOF areas completely devoid of character, but there is a movement afoot which has the absolute opposite view.
Nikkor 55mm f1.2
(Download)
Cosinon 55mm f1.2
(Download)
Wollensak Oscillo-Raptar 75mm f1.9
(Download)
Ross 5 inch f4
(Download)
Ross 5 inch f4
(Download)
Front element group of a Taylor and Hobson 75mm f1.8 projection lens
(Download)
Meyer Trioplan 100mm f2.8
(Download)
Ross 1 inch f1.9 cine lens
(Download)
TT&H Cooke Ivotal 25mm f1.4 cine lens
(Download)
Sep 17, 2016 11:27:13 #
rjaywallace wrote:
Do ALL lenses from a particular vendor produce the similar level of Bokeh under similar conditions (setting, exposure value, etc)? In a word, no. ALL vendors produce lenses with varying characteristics for different markets and to fill different price/market nitches. So...not all "XFHYD"-brand lenses will produce indentical image results. THAT was the question you asked, JayHT, and THIS is your answer.
Sep 17, 2016 14:42:45 #
JayHT wrote:
Do all lenses from a particular vendor with the same aperture and regardless of the focal length, say Canon 2.8 lenses, produce the same level of bokeh? My experience with this issue is not conclusive.
Thanks for your input.
JayHT
Thanks for your input.
JayHT
Under exactly the same lighting condition perhaps but it's always different given the light you have.
Sep 17, 2016 16:24:38 #
kymarto wrote:
First of all, the shape of the aperture, determine... (show quote)
Toby, that is absolutely the most fascinating demonstration of what "bokeh" really is that I've ever seen! I don't know if it helps people understand though because it's necessary to understand it first in order to see what is so fascinating!
But dang man, that is neat!
Sep 17, 2016 16:31:41 #
Peterff wrote:
Is that just a knee jerk reflex reaction? Although my 8 blade FL 55mm f/1.2 still seems to do OK....
Now we just need someone to post some donuts....., yum, yum....., I'm starving!!! LoL
I do have some nice Bokeh samples but probably can't post till tomorrow night, if this is still alive?!
SS
Sep 17, 2016 16:41:40 #
SharpShooter wrote:
Now we just need someone to post some donuts....., yum, yum....., I'm starving!!! LoL
I do have some nice Bokeh samples but probably can't post till tomorrow night, if this is still alive?!
SS
I do have some nice Bokeh samples but probably can't post till tomorrow night, if this is still alive?!
SS
Canon FDn 500mm Reflex with Ed Mika Adapter for EOS
(Download)
Donuts? Did somebody say donuts?
(Download)
Yeah! Somebody said donuts!
(Download)
Donuts? Where?
(Download)
Canon FDn 500mm Reflex with Ed Mika Adapter for EOS
(Download)
Sep 17, 2016 16:48:43 #
Peterff wrote:
Donuts? Did Somebody say Donuts? Yeah, Somebody said donuts!
Peter, cut me a break!!!
Those are just honker posers, posing in a studio with a cheap backdrop!
I'm talking serious donuts, the kind produced by a Dunking Donut Reflector lens!!! LoL
Yum, yum
SS
Sep 17, 2016 17:03:18 #
SharpShooter wrote:
Peter, cut me a break!!!
Those are just honker posers, posing in a studio with a cheap backdrop!
I'm talking serious donuts, the kind produced by a Dunking Donut Reflector lens!!! LoL
Yum, yum
SS
Those are just honker posers, posing in a studio with a cheap backdrop!
I'm talking serious donuts, the kind produced by a Dunking Donut Reflector lens!!! LoL
Yum, yum
SS
OK you got me, but do you know long it took to clean up the floor after having those geese in the studio? And I had to burn the backdrop!
And for Peet's sake, I drink decent coffee!
Sep 17, 2016 17:06:49 #
Peter, that's funny. When I replied only the honker shot had posted.
But that motorcycle shot...., now your talking.
Getting REALLY hungry now!!! LoL
SS
But that motorcycle shot...., now your talking.
Getting REALLY hungry now!!! LoL
SS
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