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Revolution Models . CarbonXtreme . Midland Helicopters

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Aerial Photography and Video > Exposure asside, what shutter speed do you find works best?
 
 
ImRich
Veteran
Location: Derry, NH USA

Not taking into account proper 'exposure' (is that a proper word for the digital age?) what shutter speed do you find works best for your heli work?

Do you simply choose a shutter priority mode and select 1/1000 (or some other speed)?

I'm trying to experiment with different settings of my camera including some 'preprogrammed' modes to find the best combination.

I wouldn't think that depth of field would be an issue at the focal lengths and subject matters that most are photographing.

I tend to lock in at infinity focus for most work. How about you?

---
Rich
05-15-2004 Over year old.
HOMEPAGE  
 
 
Angelos
Key Veteran
Location: nr Oxford, OX11, UK

Hello Rich,
The term 'shutter speed' makes sense for digital cameras even if this sounds odd. There is in fact an electronic shutter signal which defines how log the CCD will collect charge.

The term that does not make sense is the ISO number. However for digital cameras this ultimately defines the amplification gain of the CCD signal. The higher the ISO, the higher the amplification. This gives the same effect as a more sensitive film, however similarly to a sensitive film when you set the digital camera to a higher ISO the pictures you take a are more noisy. This is because together with the signal that defines the image the camera also amplifies the noise. It is therefore much better to make the camera collect more light beforehand than to collect a bit of light and amplify it.

With the above in mind I never use ISO more than 100 unless absolutely necessary. Shutter speed 1/500 works well for most days. If it is a very bright day I would rather decrease the ISO to 50 than increase the shutter speed to 1/1000.

-Angelos
05-15-2004 Over year old.
 
 
ImRich
Veteran
Location: Derry, NH USA

Hi Angelos,

Yes, I was aware there is a shutter. I was joking about the exposure, thinking more of film exposure than a CCD image.

I try to keep my 'ISO' down too! Less noise it better!

I'm aware of the other things. Thanks for your notes. I'd like to see what others find usable.

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Rich
05-15-2004 Over year old.
HOMEPAGE  
 
 
MPA
Elite Veteran
Location: Australia

it all depends on what shutter speed your heli can work at before most shots are blurred.
If that is 1/250 then that is your lower limit.
Other than that you want the highest F value you can run.
Turn it up until you get to your 1/250.

If your rig is working well and the dampening you should be able to shoot down to 1/125 to 1/250 easily.
You may prefer a bit faster on the shutter to make up for those shots you have a little movement in the rig, or to stop movement from subject matter.

Depth of field is not an issue beyond about 40ft from the camera so forget about that for Helicam pics.
But there are more reasons why you want a high F value than just DOF.

For the simple explanation of why, take a shot on a tripod in bright daylight at the lowest F value and then wind the F up as high as you can to get a same exposure, same shot from high F value.
Compare the pics, youll see why you want a higher F value.

As far as ISO setting, see what Angelos wrote, leave it on lowest ISO.
05-15-2004 Over year old.
HOMEPAGE  
 
 
ImRich
Veteran
Location: Derry, NH USA

MPA,

Thanks for the info. Everyone here is always helpful.

I guess I was asking for people to post what they use as a shutter speed. I'm trying to compare what most people use with what I've been using. I try to keep 1/500 or 1/1000, but lighting makes it tough somtimes. I did some overcast shots yesterday and trying to keep the ISO down and the shutter speed up was a challenge. The shots came out a bit under exposed, but at least I didn't blow out any highlights!

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Rich
05-17-2004 Over year old.
HOMEPAGE  
 
 
MPA
Elite Veteran
Location: Australia

Quote 
what they use as a shutter speed


Yep I got that part

I expanded the reply it a bit to sort of show you need to asses what is best for you to run at for your conditions as far as shutter.
what some others or even the majority use for shutter speed, may not work for you nessecarily.

Overcast, yuk, plenty here now its winter.
Id suggest overexpose a stop in overcast (then fix mids with PS.)
in overcast light level appears brighter to the camera than it actually is.

Cheers
05-17-2004 Over year old.
HOMEPAGE  
 
 
ImRich
Veteran
Location: Derry, NH USA

I feel for you (winter), we're just coming into our nice spring flying weather (except for a few rainy days).

I appreciate your information.

After thinking about it more I was trying to assess my vibration levels by seeing what others can get away with. If most people are seeing what I am when using 1/500 or 1/1000 for great results, then I know I'm in the ball park. If the majority of people can use 1/125 to 1/250 with a wide FOV lens then I know I have a lot more vibration than others and I can try to work on that.

I find that 1/500 is about as slow as I can go. Sometimes 1/250 works, but everything has to be just right. Rarely will 1/125 give a clear picture. I check for vibration by magnifying small details in my shots looking for vibration.

This almost makes me want a custom program for my camera where I can simply state a minimum operating shutter speed. This way I can lock the ISO at 100 and let the camera do it's own thing without worying about the shutter going too slow causing vibration issues or significantly underexposing if the sun goes behind a cloud all of a sudden.

The 'action' program almost works like this, but I notice it can get lower than 1/250 sometimes. I think they put the focal length of the lens into the equasion somehow.

Yes... I know that no camera metering is perfect and a good exposure is the mark of a good photographer, right after composition!

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Rich
05-17-2004 Over year old.
HOMEPAGE  
 
 
MPA
Elite Veteran
Location: Australia

Understood.

At that rate if its for the purpose of vibration testing Id suggest if you can get clear shots at 1/500 and most 1/250 are throw aways you might need to work a little more on balancing.
You should be able to get clear shots at 1/250 on most shots and Im sure most here can.

And it stands to reason that if you can get clear shots from 1/250 (vibration wise) then youll benefit from it working at 1/500 which most likely run at here.

Cheers
05-18-2004 Over year old.
HOMEPAGE  
 
 
pilatus turbo
Senior Heliman
Location: Brandon, MS

ISO number?

Hi guys,

How about when you have a camera (DSC-S85 sony) that gives you the following ISO numbers:
100
200
400
Auto
The one I would like to know about is the ISO on AUTO mode, what do you think..??
NOTE: I used the ISO on AUTO and seen to work OK.
Regards,
Hector

I have a dilema but I can not decide
05-18-2004 Over year old.
HOMEPAGE  
 
 
Angelos
Key Veteran
Location: nr Oxford, OX11, UK

Hector,
in AUTO mode the camera will try to use the lowest possible ISO. It works well but takes a bit longer for the camera to take the shot. I mean the time from pressing the trigger to taking the photo.

-Angelos
05-18-2004 Over year old.
 
 
Brett
Veteran
Location: Chicago Burbs

Angelos

Check your email. I sent you payment and an email and no reply. Pleae PM me.


Thanks
05-19-2004 Over year old.
 
 
Angelos
Key Veteran
Location: nr Oxford, OX11, UK

As I state on my website it takes about 10 days to most designations outside UK. It is now just 11 days since your PayPal e-check cleared. Give it some time and it will be there.
05-19-2004 Over year old.
 
 
pilatus turbo
Senior Heliman
Location: Brandon, MS

ISO setting thanks

Angelos,
Thanks for the information. I think I am going to stick with 100.. It always worked great back in the days of 35mm

Hector

I have a dilema but I can not decide
05-19-2004 Over year old.
HOMEPAGE  
 
 
Brett
Veteran
Location: Chicago Burbs

Angelos

Thanks for the reply I did not recall seeing that on the web, I thought that I ordered by sending you an email just the same I must not have seen it. I sent ya a few emails and did not hear from ya so thats what gut me wondering about it. By the way I sent the pay pal May 4th so thats a bit longer but so long as I know you sent it I am sure I will get it.


Thanks
05-20-2004 Over year old.
 
 
Brett
Veteran
Location: Chicago Burbs

ANGELOS

I just received notice that I have received a refund from you. I am confused because you said as per your web site give it time. Are you trying to say that you never shipped it.
05-24-2004 Over year old.
 
 
ImRich
Veteran
Location: Derry, NH USA

Brett,

Wouldn't it be better to contact Angelos via email or telephone rather than discuss in this topic?

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Rich
05-28-2004 Over year old.
HOMEPAGE  
 
 
daggit
Elite Veteran
Location: Waseca MN

I'm with Rich... what the heck?
05-28-2004 Over year old.
HOMEPAGE  
 
 
Brett
Veteran
Location: Chicago Burbs

(Sorry), I know except he is not responding so I figured I would drop in on a topic. I ordered and paid him May 4th and wrote to ask him to confirm shippment and no reply. Then when I posted here you saw what he replied with and he said it was in the mail and I would have it give it time. A week later he refunded my money with no reply so its obvious that it was B.S it was never in the mail. Sorry just ticked wont post anymore about it here. Would not have by the way if Angelos would have answered one of my five emails.
05-28-2004 Over year old.
 
 
MPA
Elite Veteran
Location: Australia

Brett

Angelos is a fellow Helicam flier who is producing these parts at low cost to help others.

He has refunded your money and didnt deliver.
That means you have make one yourself or buy it elsewhere.
05-28-2004 Over year old.
HOMEPAGE  
 
 
Brett
Veteran
Location: Chicago Burbs

Well Gee MPA thanks for your wise words of wisdom. I guess the point is that he took my money and made a public statment that the goods were on the way then refunded my money. On this side of the pond we call that Sleeeeezzzeeeeee business. Sorry but thats what it is. But hey lets not waste any more time with this, its done and thats that fair enough.
05-29-2004 Over year old.
 
 
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Aerial Photography and Video > Exposure asside, what shutter speed do you find works best?
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