The Camera Thread

[rallysman]

Ok so the Fstop is where the popping coloration come from then and the shutter is what captures the pics---Right-Meaning that low shutter will result in blur and vise versa on the fast.....

F stop is the size of the opening that lets the light into the camera. The higher the number, the smaller the opening. When you have a bigger opening you get more light, but you lose your depth of field. (the amount of the pic that's in focus)

Shutter speed is the amount of time that the sensor is exposed to light. So if the shutter is 1/125, it's exposed for .008 seconds. 1/80 means that the sensor is exposed for .0125 seconds. It doesn't seem like much at all, but it takes a very very small amount of time for the motion to blur. Think of it as a car going down the road. If it's hauling ass, then it'll look blurry. If it's going slow, it'll be crisp and clear.

The only thing that ISO does is make the camera more sensitive to light. When it's more sensitive, then you can get away with less light hitting the sensor. However, the more sensitive it is, the more noise you will get.

When you change one setting it will effect the others. The perfect scenario for fish photos (if you want the entire thing to be in focus) is low ISO, fast shutter, and a small aperture. To be able to use those settings you need a ton of light to compensate for the light you're blocking (blocking by using a small aperture and fast exposure time).

 

[akskirmish]

F stop is the size of the opening that lets the light into the camera. The higher the number, the smaller the opening. When you have a bigger opening you get more light, but you lose your depth of field. (the amount of the pic that's in focus)

Shutter speed is the amount of time that the sensor is exposed to light. So if the shutter is 1/125, it's exposed for .008 seconds. 1/80 means that the sensor is exposed for .0125 seconds. It doesn't seem like much at all, but it takes a very very small amount of time for the motion to blur. Think of it as a car going down the road. If it's hauling ass, then it'll look blurry. If it's going slow, it'll be crisp and clear.

The only thing that ISO does is make the camera more sensitive to light. When it's more sensitive, then you can get away with less light hitting the sensor. However, the more sensitive it is, the more noise you will get.

When you change one setting it will effect the others. The perfect scenario for fish photos (if you want the entire thing to be in focus) is low ISO, fast shutter, and a small aperture. To be able to use those settings you need a ton of light to compensate for the light you're blocking (blocking by using a small aperture and fast exposure time).

Hmmmm-
Not sure how to frase this right.....So might sound a bit wierd rally...

But if the above mentioned that I bolded isn't the case---Does this leave the pic either under or over exsposed?

 

[akskirmish]

I changed my settings from
1/80 or 1/00
F2.8
ISO at 800
FL-100

to this-
1/25
F6.3
ISo 800
Fl to 200
And came up with this---But does it look ne better than the other's...

And then there is this shot-
1/100
F3.2
ISO 800
FL at 155
Now is this pic over or under exsposed-
And if so-How do I go about telling this...Or is this just something that I will have to learn...

 

[August_Jacque]

Wow... this forum got REALLY freaking technical. I'm trying to keep up, but all the talk about lenses has lost me. The pics are really impressive though...

 

[rallysman]

Hmmmm-
Not sure how to frase this right.....So might sound a bit wierd rally...

But if the above mentioned that I bolded isn't the case---Does this leave the pic either under or over exsposed?

It will either leave it underexposed, noisy, or blurry. It all depends on which feature you sacrifice to allow more light.

I changed my settings from
1/80 or 1/00
F2.8
ISO at 800
FL-100

to this-
1/25
F6.3
ISo 800
Fl to 200
And came up with this---But does it look ne better than the other's...


And then there is this shot-
1/100
F3.2
ISO 800
FL at 155
Now is this pic over or under exsposed-
And if so-How do I go about telling this...Or is this just something that I will have to learn...

The first shot is better because there is more of the fish in focus, but I'm sure it was almost stationary judging by the movement of the fins. With a shutter speed as slow as you had it, any movement from the fish's head would have resulted in blur.
The exposure on the second shot looks pretty good, and the DOF isn't bad because the fish was parallel to the front of the tank. When the exposure is right, it should look the same (or a bit brighter) as it does when you're looking at it with the naked eye. You can tell that it's over exposed when the fish starts to lose detail in bright (white) areas.

 

[akskirmish]

Thanks Guys for the understanding..

I'll be done with this topic now-Quite frustrateing you guys....

 

[kendog1]

canon a630, 8 mega pix,

 

[ashdavid]

I changed my settings from
1/80 or 1/00
F2.8
ISO at 800
FL-100

to this-
1/25
F6.3
ISo 800
Fl to 200
And came up with this---But does it look ne better than the other's...

And then there is this shot-
1/100
F3.2
ISO 800
FL at 155
Now is this pic over or under exsposed-
And if so-How do I go about telling this...Or is this just something that I will have to learn...

If you kept the f2.8 and lowered the Tv you would get a better exposure, but my opinion is that these pics are still underexposed. Also something that has not been mentioned is the white balance, if you don't ghet this right pics will look unnatural. Also remember this , an underexposed pic will show noise a lot more than a proporly exposed pic. What camera are you using?

 

[hurricane_redbone]

I think all of you are right, there is no perfect way to make a picture of a fish or anything for that matter. it all depends on the kind of picture you are going for. And the lighting you have, I mean if you are shooting in a poorly lit aquarium then there is no way to take picture with a low iso and have it be sharp and not underexposed. So you compensate with a higher ISO to get the picture to be sharper and better exposed, but it wont be perfect. SO lets stop arguing about what the best way to make a shot is and instead share the settings used to make certain shots...

 

[rallysman]

SO lets stop arguing about what the best way to make a shot is and instead share the settings used to make certain shots...

Who was arguing? All I see is explanations.