Bokeh from a mirror lens
Mar 6, 2018 09:41:38 #
This photo shows very satisfying bokeh exhibited by my Sigma 600mm reflex lens. I am not a fan of the donuts one usually finds in the out of focus areas of this type of lens, so this one was a pleasant surprise.
Mar 6, 2018 09:48:21 #
loosecanon
Loc: Central Texas
The subject is sharp, but the bokey is distracting. It's even brighter than the subject. Just sayin'.
Mar 6, 2018 10:01:25 #
What is a reflex lens?
Streets wrote:
This photo shows very satisfying bokeh exhibited by my Sigma 600mm reflex lens. I am not a fan of the donuts one usually finds in the out of focus areas of this type of lens, so this one was a pleasant surprise.
Mar 6, 2018 10:08:21 #
It's my understanding that the true meaning of bokeh is how well the lens renders specular highlights in the background. So, in your photo above, which is one without specular highlights, you will not get the donuts you refer to. So, again, according to my understanding of the term, what you have here is not bokeh, but simply a soft oof background. A good experiment will be to shoot something with those highlights in the background.
Mar 6, 2018 10:23:34 #
Streets wrote:
This photo shows very satisfying bokeh exhibited by my Sigma 600mm reflex lens. I am not a fan of the donuts one usually finds in the out of focus areas of this type of lens, so this one was a pleasant surprise.
Nice shot! I like the back ground! I’m no expert but I haven’t heard of any other term for background blur other than “bokeh”?!!
Mar 6, 2018 12:21:58 #
ppage wrote:
I don't know why he calls it a reflex lens, he is talking about a mirror lens!What is a reflex lens?
Mar 6, 2018 12:24:08 #
autofocus wrote:
It's my understanding that the true meaning of bokeh is how well the lens renders specular highlights in the background. So, in your photo above, which is one without specular highlights, you will not get the donuts you refer to. So, again, according to my understanding of the term, what you have here is not bokeh, but simply a soft oof background. A good experiment will be to shoot something with those highlights in the background.
Bokeh does not refer to only the highlights, but to the out of focus areas in general!
Mar 6, 2018 12:38:32 #
speters wrote:
Bokeh does not refer to only the highlights, but to the out of focus areas in general!
interpret this anyway you want, surely two schools of thought on this:
"the way the lens renders out-of-focus points of light". (from Wiki)
...and from Practical Photography tips
"However, some photographers prefer to use a more technical or limited definition of bokeh. They only use it to describe how the lens renders the out of focus points of light. They will argue that bokeh only refers to the quality or fuzziness of the circular light sources and reflections in the out of focus area while others believe it is really more about the quality of the entire out of focus area, not just the highlights."
Mar 6, 2018 20:20:56 #
Mar 6, 2018 20:43:51 #
Streets wrote:
This photo shows very satisfying bokeh exhibited by my Sigma 600mm reflex lens. I am not a fan of the donuts one usually finds in the out of focus areas of this type of lens, so this one was a pleasant surprise.
Quality of the out-of-focus background is better than those that some settings produce from a normal telephoto. I agree that it is a pleasant surprise for that type of lens (based only on examples I’ve seen in the past — haven’t used one). The background goes very well with the subject, at least as viewed now on my phone! I like it.
Mar 7, 2018 07:06:34 #
speters wrote:
I don't know why he calls it a reflex lens, he is talking about a mirror lens!
Reflex lens, mirror lens, just two ways to define this type of lens. A more precise term would be "catadioptric", used mainly in astronomy.
Mar 7, 2018 07:48:43 #
speters wrote:
I don't know why he calls it a reflex lens, he is talking about a mirror lens!
Because they're also known as a Catidiotric and/or Reflex.....Mirror is usually the common term
Mar 7, 2018 09:02:14 #
I have kept my old Tokina mirror lens for shooting the moon and the last eclipse. For these subjects, bokeh does not come into play. One must be very careful with focus however- it is a challenge even on Live View.
Mar 7, 2018 15:39:08 #
Really like the image. Very pleasing to my eye.
Streets wrote:
This photo shows very satisfying bokeh exhibited by my Sigma 600mm reflex lens. I am not a fan of the donuts one usually finds in the out of focus areas of this type of lens, so this one was a pleasant surprise.
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