The Circle of Confusion: Exploring Photography with Mark Wallace: AdoramaTV
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- เผยแพร่เมื่อ 19 พ.ค. 2024
- www.adorama.com
In this episode of Exploring Photography with Mark Wallace, Mark explains the circle of confusion and how it effects focus, depth of field, and the price of our lenses.
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I have been shooting for over 4 years and this is the first time I could understand what the circle of confusion means. Thanks, Mark!
Mark for President! A vote for Wallace is a vote for a better world :D Well done, really!
Mark, I think you explained the "circle of confusion" better than anyone else I came across
Not only this video explains what the circle of confusion is, but it also clarifies how the aperture influences the DOF. Pretty much everybody knows that a large aperture results in a narrow depth of field, but without some help from even a simple graphic it's hard to understand why. I've watched this video years ago but sometimes it helps to go back to the basics. 👍👍👍
Oh Mark! All your tutorials and explanations are simply superb. Frankly, never even knew there was something called the circle of confusion. Fantastic, and thank you!
Thanks Mark, I appreciate your videos very much! I just finished a 3 month university Digital Photography Course and want to continue with my learning and also clear up anything that didn't make sense. You're ability to make the complicated make sense in a simple way is awesome!
You managed to explain this technical topic brilliantly! Thank you so much!
I LEARNED SO MUCH!!!!!!!!!!!!
Thank you for short and clear explanation. Finally i understood what "circle of confusion" means.
Most educational yet simplified explanation.Very nice!
Always Appreciated !!! For very Important topics !!!👌
Your explanation of the circle of confusion was excellent, and clarified a confusing subject for me. Thanks, Mark -- and Lex.
Sheeesh... you've got a real gift for explanation. This is 4th video of yours that I'm watching and you're clearing up things I've tried to understand for years. I've taken classes. Watched numerous tutorials. It's NEVER been this straightforward. #Kudos
Thanks for another clear and concise video Mark. I won't be running out to buy a Leica anytime soon but as usual you have given me food for thought which makes photography all that much more fun. Keep up the great work Adorama.
Mark, you are THE best!!!
Probably the best explanation I have heard on this subject...thanks a bunch!
Great video Mark, thanks! I've never heard that explained quite like that before. Your explanation really helped me to understand more of the deep details of why depth of field works the way it does.
cool video mark. I didn't even know anything about the circle of confusion. this is the first time I herd of it. thanks for talking about it.
God bless you... I was breaking my head to understand what causes depth of field.... Now I get it....
Phenomenal explanation. Thank you!
I've missed you both. Glad you're back in force.
Mark, you're the man to go to for reliable knowledge! When I saw the trailer in the beginning, I thought... uh-oh something isn't right because bokeh is about to be mixed into CoC. But you got it right by explaining CoC itself, then jumping onto the bokeh topic and how they relate. Again, great job man! Keep it all up!Only thing I can think of to add, is that the CoC greatly depends on the pixel size of the sensor. What "ray of light" fits into a single pixel appears sharp on the image.
Great work Mark! Finally makes sense.
That was awesome! Thanks for the clear explanation! I was in the dark... now I can see! Thank you Adorama!
Thanks I learned so much! Now everything makes sense.
though it hasn't been a long time since I've been shooting but your detailed videos are so well made and explained i find it easy to learn even the technical terms of photography thanks to you :)
One of the most interesting video i'v ever seen on this subjet !! Thanks
Fantastic explanation, thanks Mark!
Good information Mark. I enjoyed the 2D and 3D examples of focal plane and how lenses focus. Winter time in Phoenix? Always a good day for a shoot 😀
That's the best explanation I have heard in a long time..
Great explanation of a complicated topic, always nice to see Lex in a segment.
Very well explained, thank you!
I don't know if anyone can explain it easier than Mark. Good info well done Mark..
Thanks Mark, this was great and the animation really brought it all into view.
Excellent Mark, this help a whole lot.
Great job explaining the physics of optical systems.
This was very helpful to me! Thanks a lot, Mark!
Thanks Mark that was really quite informative.. I knew the basis of why different lenses are more expensive but that was a great explanation.
greatly explained, thank you!
Thanks, Mark! great video
Great video. Thanks for sharing.
Perfect explanation! Really... Thanks!!!
Great video! Thanks Mark
Very interesting & so well explained.
It was great explanation Mark, Thank you
excellent video, very clear explanation, thank you
Another great video...:)
Most Excellent! Great explanation on the impact of aperture settings on the CoC. Loved how you tied in the idea of needing more lenses to compensate for the difference in RGB wavelengths, chromatic aberrations and what our eyes perceive as what is in focus.
The Meltdownman
Brilliant presentation Mark and well explained. I will be pointing my students to this video from now on.
nice to understand about the circle of confusion and chromatic aberration. thanks.
this video is amazing.
Assistindo no Brasil, parabéns pelo vídeo, excelente explicação. belíssima modelo.
Everything, and I mean everything, about this video is just perfect. 😉
that was so informative, thank you!!!
GREAT VIDEO. THANK YOU
She's amazingly beautiful!!
Yeah, but she talks too much.
Great explanation, thanks
A great video. I think I now understand.
I thought I understood this before .. now I understand better .. thanks.
I've heard of these terms, but never understood what they meant. Thanks for making it simple to understand.
Crazy good audio despite the wind!
Thank you Adorama and Mark Wallace
I actually understood this, thank you :) :)
Great video!
Thanks a lot for this explanation:)
Finally got to understand what CA is. Thanks
Great explanation
Hey Mark thanks a lot for these amazing tutorials and thanks adorama too!!
On this tutorial you taught us about the circle of confusion and how it effects focus, depth of field. But if there is a rage of focusing spot that makes our eyes to think that our subject is perfectly on focused, when the reality we are out of this little dot you mentioned throughout the tutorial; How can my camera tells my eyes that whatever they are looking at, it is not the little focusing dot? is there any focusing meter just like a light-meter we can get from adorama? How can I be on that little focused dot, and be smarter than my eyes?
Great video
Thank you thank you thank you!! I GET IT.
Thanks Mark for making the circle of confusion not so confusing! B|
enjoyed the video, nicely explained, I think the name circle of confusion is a confusing name for a more simple issue, like many things in photography, wear simple things are made complicated by over technical people
Hi Mark, First thank you for such a nice introduction video that allows for many unfamilliar with the physics concepts of the subject to understand the basics. Awesome job, you have my thumb up and subscription. Beside your great video, I would have a technical question that generates a lot of discussions more confusing than the circle of confusion itself and that I hope you could answer. Simply put if the bokeh increases as the aperture increases too (wider), and that it seems to be related to the circle of confusion that should go with strict physics rules, then how come a large lense on a full frame at wide open (2.8 and below for numbers) will give more bokeh than let's say and equivalent converted size lense on a micro 4/3rd at equal aperture/time/iso. Does the circle of confusion "widens up" (then less bokeh) for these specific smaller lenses that could seem to gather less light but in reality not since a given aperture/time/iso translate the same with a FF or 4.3. with each lense on their system.I start to loose it at this point and may be you could make it clear ?That would be a nice one to explain because it's a little hard to get and your video was very easy to understand by your great vulgarisation of the subject. It puts it at reach for many embracing the photo optic physics concepts.Thank you for your time and answer (if you have the time...)
Shooting for years, always heard about this, but now I actually know what it means. .Yahhhh
Now I get understand!!! I was confused 😬
Now I know why we get chromatic aberration...good stuff!
Subscribed with the bell icon turned on! you had like 2999 thousands likes and I made it 3k.Thanks a lot
Very useful 👍👍
I stand corrected. I thought the circle of confusion represented that area within the Washington, D.C. beltway.
Alex, u a amazing :)
To me, the circle of confusion is driving around a rotary trying to figure out what exit to take.
Fanfreakingtastic.
As an amateur, I use only kit lenses. I have seen when I increase my lens'e focal point, my pictures get softer and softer. It's actually very soft above f/16. Thanks to you, now I know why this happens. due to chromatic aberration, my kit lens can't focus at exactly to the focal point, and the picture losses it's details. So, may be I should go with the low f stop number to give more detail in my photos.
+Gunjan Das Actually, at f /16 you are not really experiencing chromatic aberration , but rather diffraction effects, When light passes through a small opening, it behaves like a wave and there are bands of interference. Lenses at such small aperatures are said to be diffraction limited in sharpness. To view this strange quantum effect, see some of the videos on the two slit phenomenon.
Good to know
What was the setting of shutter speed and ISO for the bookeh effect of the model in f 1.4
Yes she is really pretty
Fujifilm Depth of Field Focus Scale i haven't in X-s10 or i don't know where is ?
It is also a good way to explain why Leica lenses are so darn expensive. Well done Mark! But are Leica lenses the only ones that will give you sharp focus and low CA? No!
First coment? yei!!! really helpfull!! great as always!
at 1:56 he says that light converges into the camera, but in the diagrams, the light diverged from the point source of light. Why are these two different?
Does the CoC change if using DX crop mode on an FX camera, or is it consistent to the native FX sensor and we are just "throwing out" the surrounding pixels? I've been using hyperfocal calculators with my D750 and a fisheye that can be used in FX (circular) or DX (rectangular) but wasn't sure if I should be changing my CoC depending on which mode I'm using.
You're tossing out the peripheral pixels. The main issue with FX and DX and depth of field is because you have to get further away to get the same _composition_ with a DX sensor, and DOF is dependent on distance as well as aperture (it increases with greater distance).
The confusing thing (so to speak) for many people is that "confusion" in this case does not mean "befuddlement" but rather a technical term meaning "blurring together", or "below a certain size, it's all a dot to our eyes".
Also - I was always taught that parallel rays entering a convex lens converge at a point; divergent rays from the external focal point are turned parallel. I know you admitted you were deliberately oversimplifying things, but your animation possibly goes a step too far - there are going to be teenage kids watching this who've done their optics course in high-school science or physics and thinking what the heck? On the other hand, what's happening on the sensor/film side of the lens is spot on.
Nice
I get it, I think :-D Thanks
Which lenses minimize chromatic abberation?
The term that you see will be "apochromatic" or sometimes just "apo". BTW you can get "apo" lenses for somewhat less than he says.
im still confused
So isn't the circle of confusing just the relationship between your focal plane and depth of field?
My brain must be in the circle of confusion because I am confused
On bright-sunny days, I notice that pesky chromatic aberration is more prominent. It's very annoying to say the least!
Alex, I love you:-)