Question about light gathering potential in larger diameter lenses (Page 9): Don't tell me that it can't be.....you are very welcome to come shoot beside me and see for yourself. I...

tomcat

clickety wrote:

That just can’t be. The only distance that’s impor... (show quote)

Don't tell me that it can't be.....you are very welcome to come shoot beside me and see for yourself.
I shoot with spot metering.
The shutter is 1/500 sec to stop the action and the aperture is maxed out at f/2.8. The ISO sensitivity in the Nikon D3s is set on auto, so that it drifts with the light. Most ISO values range between 12,500 and 20,000 depending upon subject distance from the camera.
Maybe the gyms in NC that I shoot in are not uniformly lit and have different physics for light transmission through the air :))
The reason that you see the moon is because it is lit by a nuclear reaction and the gyms are not.

clickety

tomcat wrote:

Don't tell me that it can't be.....you are very we... (show quote)

You must be thinking of the sun.

The moon is just an inert object illuminated by the sun, no different than any other object we view or photograph.

This conversation is over, I don’t have time for nonsense.

tomcat

clickety wrote:

You must be thinking of the sun.

The moon is just an inert object illuminated by the sun, no different than any other object we view or photograph.

This conversation is over, I don’t have time for nonsense.

The moon is lit by the sun, which produces its light from a nuclear reaction--what was it about my statement that was misleading. I'm also sorry that you don't won't keep an open mind and can reason with me for the differences in lighting that cause the changes in ISO. I was hoping that you could understand how light varies around a building and it's not all evenly lit. If you were in NC, I would pay your gas bill to come shoot along beside me and see what I am talking about. But you can certainly exit the conversation--makes no difference to me.

LWW Loc: Banana Republic of America

tomcat wrote:

Don't tell me that it can't be.....you are very we... (show quote)

If you are using spot, the exposure can change from uniform stripes to main coloring to numbers to skin color .

tomcat

LWW wrote:

If you are using spot, the exposure can change from uniform stripes to main coloring to numbers to skin color .

Yeah, I've noticed that sometimes my focus target hits a dark uniform and it ups the ISO. I can see that target in the image review when I chimp the camera. I wish that I could get the target to show up in LR so that I can verify on the computer screen what is always happening.

LWW Loc: Banana Republic of America

tomcat wrote:

Yeah, I've noticed that sometimes my focus target hits a dark uniform and it ups the ISO. I can see that target in the image review when I chimp the camera. I wish that I could get the target to show up in LR so that I can verify on the computer screen what is always happening.

I almost exclusively use matrix, I’d try that.

tomcat

LWW wrote:

I almost exclusively use matrix, I’d try that.

Wouldn't you think that when I am further away that the matrix would pick up too much background and underexpose the players?

LWW Loc: Banana Republic of America

tomcat wrote:

Wouldn't you think that when I am further away that the matrix would pick up too much background and underexpose the players?

Matrix wil judge the scene as the sensor sees it.

tomcat

LWW wrote:

Matrix wil judge the scene as the sensor sees it.

I am so used to using spot metering, that I had not thought about it. I'll try it at the next gymnastics performance. Thanks!

LWW Loc: Banana Republic of America

I would throw autofocus off a cliff before I’d give up matrix metering.

Spot metering has a purpose, but it’s very specialized, such as a stationary subject against a very bright or dark background.

For moving subjects in irregular light it could drive you crazy.

Remember that with moving objects you never actually shoot what you see because in the blink of an eye it takes to fire a shutter, the scene will change slightly.

I would also suggest predictive autofocus.

LWW Loc: Banana Republic of America

tomcat wrote:

I am so used to using spot metering, that I had not thought about it. I'll try it at the next gymnastics performance. Thanks!

Thanks BTW, there are a lot of people here who help people.

I just try to be one of them.

tomcat

LWW wrote:

I would throw autofocus off a cliff before I’d give up matrix metering.

Spot metering has a purpose, but it’s very specialized, such as a stationary subject against a very bright or dark background.

For moving subjects in irregular light it could drive you crazy.

Remember that with moving objects you never actually shoot what you see because in the blink of an eye it takes to fire a shutter, the scene will change slightly.

I would also suggest predictive autofocus.

Yeah, you're right about that blink of an eye stuff. My reaction time has slowed down so much in the past few years that I now shoot on AF-C, continuous high speed (at 9 fps), and I start anticipating the action. So when a BB player is driving for the basket, I start shooting at the foul line.... But I will also start shooting in matrix metering for a game. That might explain why sometimes my ISO values jump up to 25,000 and the images are blown out in the backgrounds.

tomcat

LWW wrote:

Thanks BTW, there are a lot of people here who help people.

I just try to be one of them.

Much appreciated

LWW Loc: Banana Republic of America

tomcat wrote:

Yeah, you're right about that blink of an eye stuff. My reaction time has slowed down so much in the past few years that I now shoot on AF-C, continuous high speed (at 9 fps), and I start anticipating the action. So when a BB player is driving for the basket, I start shooting at the foul line.... But I will also start shooting in matrix metering for a game. That might explain why sometimes my ISO values jump up to 25,000 and the images are blown out in the backgrounds.

25K ISO is getting brutal on any current DSLR.

I would suggest matrix metering, shot wide open at 1.8 and predictive AF, 1/250 and auto ISO as a starting point.

Try the same thing with the 80-200/2.8.
Most important, have fun.

tomcat

LWW wrote:

25K ISO is getting brutal on any current DSLR.

I would suggest matrix metering, shot wide open at 1.8 and predictive AF, 1/250 and auto ISO as a starting point.

Try the same thing with the 80-200/2.8.
Most important, have fun.

The f/2.8 lens definitely will not work. I tried earlier with a 70-200 and it was sooooo noisy as to be unusable. The gyms that I shoot in are right at the minimum amount of light that is required for a public occupancy in the state of NC. The shutter needs to be at 1/500 minimum--I did several trials at lower speeds and the players and gymnasts were blurry in the hands. If I could get my hands on an f/1.4, 300 mm , I'd be in hog's heaven......