General photography questions!

[BHOOTER RAJA]

@vikas_unzip first of all slow shutter is ideal for dawn and dusk time photography . And for astro photography . Well you can use this method ....
1) keeping iso at minimum and f number at 11 or above ..say 16.
2) choose shaded areas when clicking
3) ND filter is a great tool here to achieve what you want

 

[nadz11.ns]

Felt this is the right thread to post questions relation cameras.

Diopter adjustment control? What is this?
There is a small dial just besides the view finder, but I don't know what it does or what it actually is. Any pointers?

 

[anupmathur]

.....
Diopter adjustment control? What is this?
There is a small dial just besides the view finder, but I don't know what it does or what it actually is. Any pointers?

This is to make correction for weak eyes. If you wear glasses it is difficult to see through the viewfinder. You can take off your glasses and adjust the diopter control to see as well as you would through your glasses.

 

[nadz11.ns]

This is to make correction for weak eyes. If you wear glasses it is difficult to see through the viewfinder. You can take off your glasses and adjust the diopter control to see as well as you would through your glasses.

Okay.. thank you for the info sir.
This looks like a nice feature to have.

 

[zack2137]

I've a query. How does the sensor size impact light gathering capacity with respect to the len's aperture? For example, how comparable would a 1" sensor be with a f/1.8 lens against an APS-C sensor at f/4? In a similar condition, which setup will excel at reproducing optimum DOF?

 

[iamsomnath]

I've a query. How does the sensor size impact light gathering capacity with respect to the len's aperture? For example, how comparable would a 1" sensor be with a f/1.8 lens against an APS-C sensor at f/4? In a similar condition, which setup will excel at reproducing optimum DOF?

You are comparing apples and oranges. The Nikon full frame sensor is 1.5 times larger than DX sensor, so if you use same lens , at same aperture a FF sensor will gather 1.5 times more light. Now if you change the aperture of the lens of course you can tweak in a way where both the sensors will gather same light , or even the FF sensor will gather lesser light than the DX counterpart.But that is prey academic and has nothing to do with actual photography.
What is "optimum" DOF btw ? Please explain to get the right answer.
Cheers

 

[zack2137]

You are comparing apples and oranges. The Nikon full frame sensor is 1.5 times larger than DX sensor, so if you use same lens , at same aperture a FF sensor will gather 1.5 times more light. Now if you change the aperture of the lens of course you can tweak in a way where both the sensors will gather same light , or even the FF sensor will gather lesser light than the DX counterpart.But that is prey academic and has nothing to do with actual photography.
What is "optimum" DOF btw ? Please explain to get the right answer.
Cheers

Thanks Somnath. I'm trying to understand the subject isolation and background blur capabilities of 2 different setups, that is, 1" sensor on a fast 1.8 lens and a DX sensor on f4 lens. How inferior will the smaller sensor be?

 

[Ankur003]

I've a query. How does the sensor size impact light gathering capacity with respect to the len's aperture? For example, how comparable would a 1" sensor be with a f/1.8 lens against an APS-C sensor at f/4? In a similar condition, which setup will excel at reproducing optimum DOF?

Bhai, check this
http://www.dofmaster.com/
D7000 is APSC while D800 is FX (Full frame)
Smaller sensor = shallower DOF (all remaining constant)

 

[Ankur003]

I've a query. How does the sensor size impact light gathering capacity with respect to the len's aperture? For example, how comparable would a 1" sensor be with a f/1.8 lens against an APS-C sensor at f/4? In a similar condition, which setup will excel at reproducing optimum DOF?

Read this : https://photographylife.com/sensor-size-perspective-and-depth-of-field

 

[iamsomnath]

Smaller sensor = shallower DOF (all remaining constant)]

And all my life I thought that bigger sensor means shallower DOF , wink wink