Sports mode

[aam1234]

Tried the Sports mode today for the 1st time. Have these observations:

1- The cam/lens keeps on "hunting" for no apparent reason. The subjuct is "Jetskies". Easy to follow, well somewhat easy compared to say, birds.

2- From the above, non of the focus points were working. Got me confused. Couldn't concentrate on "a" subject.

3- File size: when switched to "Sports mode" the file count get's A LOT higer. Say from 100 to 150 or so.

Is that normal

[Kinger]

In reguards to the file size, the camera automatically switches from RAW to JPEG. You cannot shoot RAW in any of the Auto Modes.

[timmyquest]

Tried the Sports mode today for the 1st time. Have this observations:

1- The cam/lens keeps on "hunting" for no apprerent reason. The subjuct is "Jetskies". Easy to follow, well somewhat easy compared to say, birds.

This is because the camera goes into AI/Servo mode where it will continually keep focus of what ever is moving in the frame.


2- From the above, non of the focus points were working. Got me confused. Couldn't concentrate on "a" subject.


Another part of AI/servo is that the lens does not actually need to be focused on anything for the shutter to click.


3- File size; when switched to "Sports mode" the file count get's A LOT higer. Say from 100 to 150 or so.


This is because in the automatic modes you can only use JPEG, not raw.


Is that normal

Yup, in fact i wish the camera had AI/servo in the creative zones too.

[aam1234]

1st, please forgive my spelling. English is not my 1st language.

But why did it go from say 100 to almost 200 pics. Never shot raw, never will. Always shoot "high/large" jpeg.

[HJMinard]

That's odd ... for the me the number usually goes down. In Sports mode the camera automatically switches to ISO 400, and higher ISO usually results in larger files.

[aam1234]

Hi HJMinard, I said from 100 to 150, but that's not true. It really went from 100 to say 250. Which I found a bit odd.

[HJMinard]

Perhaps you previously - while in the Sports mode - changed the resolution to medium and the camera retained that setting?? Meanwhile you've been shooting large in the P, TV, AV, etc. I don't have my camera or manual here, but maybe the camera retains different resolution settings between creative and automatic modes??

[aam1234]

Thanks again HJMinard,

Was so surprised by the pic count that i switched it back to "normal" just to see if the cam is working normally. When back at "sports" mode, it shows very high pics left.

As much as I hate raw, i'd like to retain high jpeg in "sports" mode, if possible.

[robertwgross]

You can get better advice if you mention which camera you have.

Although there are lots of similarities among the different models, there are differences also.

---Bob Gross---

[aam1234]

Thanks Bob Gross,

The cam is 300D (Digital Rebel)

[Adam Hicks]

Why would file size go up when bumping ISO? Sports mode puts the camera in ISO800 (which I wish we could friggin change) which will result in the camera gathering less color infomation (thus faster exposure times in lower light.) Unless all the 'speckles' are taking more color, I would think less color information equals better JPEG compression equals smaller file size. The dimensions do not change, only the amount of data gathered...

Adam

[robertwgross]

Why would file size go up when bumping ISO?


This has been discussed many times here.

When you increase the ISO from, say 100 to 800, you increase the amount of color noise in the image. This, in effect, decreases the smoothness of the detail in the background especially. Due to the decreased randomness, the size of the RAW file will increase somewhat, and the size of the JPEG file will often increase even more.

---Bob Gross---

[Adam Hicks]

I guess that's what I meant by 'speckles' Not sure why I couldn't think of the work 'noise!'

Makes perfect sense. What a sad waste of memory space. grainy pictures that reduce available space :(

Adam

[defordphoto]

I guess that's what I meant by 'speckles' Not sure why I couldn't think of the work 'noise!'

Makes perfect sense. What a sad waste of memory space. grainy pictures that reduce available space :(

Adam

It's easily cleaned up though. Not a big deal. Just the nature of the beast.

[robertwgross]

Just the nature of the beast.

I declare beast hunting season to be open!

---Bob Gross---

[defordphoto]

Just the nature of the beast.

I declare beast hunting season to be open!

---Bob Gross---

Shoot at will!

[DocFrankenstein]

Due to the decreased randomness, the size of the RAW file will increase somewhat, and the size of the JPEG file will often increase even more.
How can the size of the raw file change? I thought it was uncompressed, like BMP only taken from the CMOS sensor? :?

[robertwgross]

How can the size of the raw file change? I thought it was uncompressed, like BMP only taken from the CMOS sensor? :?

You thought wrong.

RAW is a non-lossy compression. It eliminates redundancy in the binary data without reducing actual image detail. If RAW had been uncompressed, then how would you get 6.3Mp of 12-bit data into a file size of 5-8MB?

In contrast, JPEG is (normally) a lossy compression. Normally, a little image detail is lost with great savings in file size.

---Bob Gross---

[IndyJeff]

Just the nature of the beast.

I declare beast hunting season to be open!

---Bob Gross---

Shoot at will!



Which one is he?

[wolverinesr1]

that's odd. i just took about 30 sports mode shots,and they were all ISO 400.
i just wished i could have increased the shutter speec in this mode. everyone
of them the main subject was blurred,but everything else in the frame was crystal clear. it really has me thinking about using the hack. so i can have control over shutter speed.
jeff

[timmyquest]

that's odd. i just took about 30 sports mode shots,and they were all ISO 400.
i just wished i could have increased the shutter speec in this mode. everyone
of them the main subject was blurred,but everything else in the frame was crystal clear. it really has me thinking about using the hack. so i can have control over shutter speed.
jeff

What your really wishing for is AI/servo in the creative modes...at least thats what i'm wishing for :evil:

[gsmx2]

Thanks again HJMinard,

Was so surprised by the pic count that i switched it back to "normal" just to see if the cam is working normally. When back at "sports" mode, it shows very high pics left.

As much as I hate raw, i'd like to retain high jpeg in "sports" mode, if possible.

Read HJM's post again. Most certainly his is the correct diagnosis. You can have different resolution settings for the AUTO mode and the CREATIVE modes. I bet that if you go into a CREATIVE mode and hit MENU, you'll find your quality is set to LARGE. Then if you go into Sports Mode or any other AUTO mode, you'll probably find your quality is set to MEDIUM or other mode. By default, the 300 is set to LARGE so you probably changed it at some point.

Scott

[HJMinard]

How can the size of the raw file change? I thought it was uncompressed, like BMP only taken from the CMOS sensor?

What Bob said. Besides, all image files - including RAW - are unique in information and size. Different info exposed to the sensor results in different file sizes. Otherwise, all RAW or jpeg images would be exactly the same size ... and we know that's not the case.

[Big_B]

that's odd. i just took about 30 sports mode shots,and they were all ISO 400.
i just wished i could have increased the shutter speec in this mode. everyone
of them the main subject was blurred,but everything else in the frame was crystal clear. it really has me thinking about using the hack. so i can have control over shutter speed.
jeff

What your really wishing for is AI/servo in the creative modes...at least thats what i'm wishing for :evil:

What you need is a D70 :wink: :lol:


PS. For those of you in hunting mode I would like it recorded that Nikon users are not legitmate targets :D

[Jesper]

that's odd. i just took about 30 sports mode shots,and they were all ISO 400.
i just wished i could have increased the shutter speec in this mode. everyone
of them the main subject was blurred,but everything else in the frame was crystal clear. it really has me thinking about using the hack. so i can have control over shutter speed.
jeff

What your really wishing for is AI/servo in the creative modes...at least thats what i'm wishing for :evil:

What you need is a D70 :wink: :lol:

NO, a 10D !!! :)

[timmyquest]

that's odd. i just took about 30 sports mode shots,and they were all ISO 400.
i just wished i could have increased the shutter speec in this mode. everyone
of them the main subject was blurred,but everything else in the frame was crystal clear. it really has me thinking about using the hack. so i can have control over shutter speed.
jeff

What your really wishing for is AI/servo in the creative modes...at least thats what i'm wishing for :evil:

What you need is a D70 :wink: :lol:

NO, a 10D !!! :)

[aam1234]

HJMinard, you are 75% right,

Perhaps you previously - while in the Sports mode - changed the resolution to medium and the camera retained that setting?? Meanwhile you've been shooting large in the P, TV, AV, etc. I don't have my camera or manual here, but maybe the camera retains different resolution settings between creative and automatic modes??

That was my 1st time using "sports mode", always used Av since I bought the camera (ok a little Tv too). So when switched to sports mode I expected it to retain my setting.

Apparently what you said is true but maybe the camera retains different resolution settings between creative and automatic modes??