I just discovered..

[Horoscope Fish]

Think of aperture like you do shutter speed; as a fraction. Then consider the total amount of light needed for correct exposure being your whole "light pie". Every shot needs two slices of "light pie" to make a whole pie: one "slice" of shutter speed and one "slice" of aperture.

This being the case...

1/30 will always be more "light pie" than 1/125, just as f/4 (1/4) gives us more "light pie" than f/32 (1/32) would.

Now combine the two... 1/30 at f/8 is one completely and properly exposed "light pie" but 1/60 at f/5.6 or 1/15 at f/11 would give us the same, equally correct exposure. The key thing is, we always want one whole pie (0 EV (zeros are round like pies)), but we can slice the pie using shutter speed and aperture to creatively control the final outcome. The aperture "slice" allows us to control depth of field, shutter speed "slice" controls motion/motion blur but always in tandem to give us proper exposure (one whole pie).

Mmmmm... Pie!

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[Sohail Gagai]

Thanks I will try to understand zzzzzzzzzzzzzzz

Learning to take photographs in M mode, confuse with Aperture / Shutter speed / ISO.
Don't have a clue yet lol !!!
Have Nikon D3100 & 18-55 lense

 

[SteveH]

OK great, one more thing when I asked for the low aperture lence I was told it's very expensive

A low aperture lens opens wider, and is good for low light... They normally are more expensive, especially for a zoom, but you get good ones too.... The 35mm and 50mm primes are among the cheapest lenses you can get, open down to F1.8 and are amazingly sharp... Again, the sharpness gets better around F8, but the 35mm prime, at F4 will be much sharper than your 18-55 @ 35mm F4.

 

[Sohail Gagai]

Which one should I buy 50mm or 35 mm

Learning to take photographs in M mode, confuse with Aperture / Shutter speed / ISO.
Don't have a clue yet lol !!!
Have Nikon D3100 & 18-55 lense

 

[Horoscope Fish]

Which one should I buy 50mm or 35mm

I have both the 35mm and the 50mm. Between the two, I prefer the 35mm.

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[Sohail Gagai]

What is the difference

Learning to take photographs in M mode, confuse with Aperture / Shutter speed / ISO.
Don't have a clue yet lol !!!
Have Nikon D3100 & 18-55 lense

 

[Horoscope Fish]

What is the difference

The difference is 15mm.

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[Sohail Gagai]

Lol sorry I am dumbo
I don't know the mm what is it
Pls guide Thankyou

Learning to take photographs in M mode, confuse with Aperture / Shutter speed / ISO.
Don't have a clue yet lol !!!
Have Nikon D3100 & 18-55 lense

 

[Horoscope Fish]

Lol sorry I am dumbo
I don't know the mm what is it
Pls guide Thankyou

This article will explain it for you: Understanding Focal Length.

....

 

[Sohail Gagai]

Thankyou

Learning to take photographs in M mode, confuse with Aperture / Shutter speed / ISO.
Don't have a clue yet lol !!!
Have Nikon D3100 & 18-55 lense

 

[Michael J.]

The thread turns out in a superb learning thread.I love it.

 

[Michael J.]

One thing what I tried and got successful - to blur the water. I am so happy that in M Mode this can be done without necessarily attaching an ND Filter. I think with more exercise I am able to get better results.

I know it is not how Pro's do but for me as a hobby photographer this way is something what helps me to make some photos look more interesting

Here just a test shot

 

[Blacktop]

One thing what I tried and got successful - to blur the water. I am so happy that in M Mode this can be done without necessarily attaching an ND Filter. I think with more exercise I am able to get better results.

I know it is not how Pro's do but for me as a hobby photographer this way is something what helps me to make some photos look more interesting

Here just a test shot

View attachment 114903

Hi Michael. I like this shot and very happy for you that you have discovered a new way of taking shots.
Manual sure comes really handy taking water shots or nighttime images or even Moon shots.
Have fun!

 

[Smoke]

Excellent video on Aperture, Shutter an ISO and don't for get LIGHTING and how one effects the others.

https://www.youtube.com/watch?v=F8T94sdiNjc

 

[aroy]

OMG I thought opposite pls help you mean if I do lower aperture I couldn't get the sharpest subject, how does it work pls help

In general Aperture or speed has nothing to do with sharpness. Sharpness is when the object is in perfect focus, and barring really horrible lenses, every one by Nikon is sharp when properly focused. Now the wider the aperture, the less is the DOF. What that means is that with a large DOF a lot of objects in front and behind the object will be in reasonable focus. For example if you focus on the eye from 2m away at F8, the nose, ears and may be the person behind will be reasonably in focus. In contrast if you use a wide aperture, say F1.8, then focusing on the eye, may leave the nose tip and the ears slightly out of focus.


F1.8. Right eye in focus, ear out of focus, background hazy


F3.2 The whole face is in focus, background less hazy

Similarly if a person is running at say 10km/h, that translates to 2,777 mm/sec. So if the exposure speed is 1/1000 sec the person has moved 2.7mm in real space. If the object is at a reasonable distance and the magnification of the lense 1:100 (normal for a long lense at 20m), then the blur will be 0.027mm, or 6 pixels in a 24MP DX sensor. Now increase the speed to 1/4000 and the blur will be about 1.5 pixel - insignificant and the image will look sharp.

 

[Sohail Gagai]

In general Aperture or speed has nothing to do with sharpness. Sharpness is when the object is in perfect focus, and barring really horrible lenses, every one by Nikon is sharp when properly focused. Now the wider the aperture, the less is the DOF. What that means is that with a large DOF a lot of objects in front and behind the object will be in reasonable focus. For example if you focus on the eye from 2m away at F8, the nose, ears and may be the person behind will be reasonably in focus. In contrast if you use a wide aperture, say F1.8, then focusing on the eye, may leave the nose tip and the ears slightly out of focus.

View attachment 114940
F1.8. Right eye in focus, ear out of focus, background hazy

View attachment 114941
F3.2 The whole face is in focus, background less hazy

Similarly if a person is running at say 10km/h, that translates to 2,777 mm/sec. So if the exposure speed is 1/1000 sec the person has moved 2.7mm in real space. If the object is at a reasonable distance and the magnification of the lense 1:100 (normal for a long lense at 20m), then the blur will be 0.027mm, or 6 pixels in a 24MP DX sensor. Now increase the speed to 1/4000 and the blur will be about 1.5 pixel - insignificant and the image will look sharp.

Thankyou really nice of you

Learning to take photographs in M mode, confuse with Aperture / Shutter speed / ISO.
Don't have a clue yet lol !!!
Have Nikon D3100 & 18-55 lense