f1.8 vs f1.2 (Aperture Explained) #photography

f1.8 vs f1.2 is one full stop. Here's what you need to know

📧 LET'S CONNECT:

#photography #phototips

[TechnoBabble]

Bit of a correction. The f-stop is not the physical size of the aperture, but the size of the entrance pupil, which is the apparent size of the aperture when viewed through the front of the lens.

[johndododoe]

Each stop doubles the area, so two stops double the diameter and thus the number . One stop is thus square root of 2 bigger . Hence the list 1, 1.4, 2, 2.8, 4, 5.6, 8, 11, 16, 22, 32 .

[raghunathdas]

I need a Detailed video on LENS covering the topics :
1. Technical terms
2. How they work
3. Types and varieties
4. tips and tricks

[elzafir]

To be more precise, the number represents the size of 'entrance pupil' diameter, not the actual aperture size. Entrance pupil is the aperture when viewed from the front of the lens, which is different than the actual size of the aperture. This is the easiest to visualize in variable aperture zooms. When we zoom in, the aperture from the back doesn't actually change size, but when viewed from the front the entrance pupil looks like it become smaller because the optics moved, thus we have larger aperture number (smaller aperture).

[ItzSlushie]

I’m still processing this after the 3rd watch

[kimasher]

I trained under a master photographer 30 years ago. I used to teach post-grad photography a long time back. You are the first person, apart from myself, who I have ever seen explain the incredibly basic mathematics of how the F-stops are just related to the diameter and surface area of the diaphragm. So simple, so useful to know, so neglected. Now, do you know why we had 8 bit colour channels? I’ll give you a clue. Humans can typically perceive 255 shades of grey between black and white. ;-)

[WIIMTheMusician]

I need some advice! I currently have a Canon Rebel t3i (old I know but very reliable) paired with a 50mm lense 1.8 aperture I believe. What is another lense with low aperture but is more of a zoomed out/wide angle lense? I absolutely love the bokeh background blur

[Its-me_Sazid.]

Damn, camera lenses are the beauty of science ❤

[shyamalganguly]

Thank you for reminding me the formula for finding the diameter of the apertures and the area thereby of an aperture!
If d is the diameter of an aperture then the radius of that aperture d/2 and the corresponding area would be π×d²/4 and we can easily find the each of the areas covered by each aperture! Therefore, f/2 for a 70mm lens would give 70/2mm Or 35mm diameter at f/2 and the area covering the almost circular aperture is about 22×17.5²/7 sq mm!

[khay]

This guy is a legend. All this knowledge has leveled up my gear choices and general knowledge on camera bodies and the gears that works best for me, not every gear you recommend was for me, but there are some like the prograde card and the Rode wireless pro, then the knowledge on how to use ND filter and CPL filters.
I just want to say a big thank you.

[محمدالزرقاني-تم]

Thanks very much, first time understanding this 😊

[ambrosevonerkel]

Bloody brilliant, I’ve been doing fotografy for decades and never knew about this phormula

[luuketaylor]

Time for me to sleep, but I'll definitely be watching the full video tomorrow after work!

[spainweddingphotography]

400 weddings and I just learnt how aperture stops calculated 😂love videos like this! ❤

[afdyaziz]

Can u explain what STOP is? And where to find them in the settings or understand them?

[artmaltman]

Fascinating videos. Please do them without the distracting music. Thank you.

[shoots_austin]

It would be cool to see a graph of diameter against f stop

[aa]

So does it mean that if you have a cheap 120 mm lens with F 3.5 aperture give better bokeh than a 35 mm lens with F1.2, as the diameter is more?

[donald]

Insightful. Now what does a smaller aperture provide to a photo versus a larger aperture—50mm vs. 25mm (f/2)? Does it mean like letting in more or less light into photo?, Things like wider means more picture versus less opening of the lens?

[charlessands]

Is the ratio between the actual aperture opening and the diameter of the field lens behind the aperture opening. Unlike most people, I came to photography from astronomy. In astronomy, what is referred to as aperture in photography is referred to as focal ratio - which should be the term used.