photo_guru1

Hi Folks,

 

Thank you for your contributions.

 

I specialize in LANDSCAPE PHOTOGRAPHY and is going to extend my photographic realm to flash photography. That's why I have asked elementary questions even I am a `photo guru`. One good at one particular field may not be doing equally well in all others.

 

I guess many of you are doing general photography. Aren't you? You all may not be familiar with, have knowledge of, macrophotography and wildlife photography at all. Am I correct?

 

Photo Guru

EOS Flash Photography System

 

I'm a newcomer to flash photography, just wanna know more about fill-

flash. What would be the effect if the shutter speed is longer than

the flash sync speed? Shallow depth-of-field always means using a

very fast shutter speed, say 1/500 and 1/1000th second. How to set

the flash in conditions like portrait photography?

 

I have also heard that the flash unit usually gives out light that is

too much to be used as a fill flash. How much negative flash exposure

compensation is suitable?

 

Any reference to introductory materials on the web would be welcome.

 

Many thanks.

Selecting AF Point with Canon EOS-1Ds

 

The AF point can be selected either automatically or manually. In AF

automatica selection, the camera selects one out of 45 AF points.

While the manual mode allows users to select one out of 45 or 11 or 9

AF points (CFn13).

 

What's the point of using automatic selection? Why not manually

select one AF point and use CFn17 to expand the activation area to 7

and 13 points automatically when using a telephoto lens and in AI

servo mode?

 

I would also like to know the rational on which teh automatic

selection operates? I wonder if automatic selection is reserved for

fast moving subjects.

 

For your reference, Canon EOS-1Ds Instruction Manual pp. 64 to 66, 70.

Thanks.

What if when the lens is in AI Servo mode, continuously focus tracking a moving subject. It follows that the IS would not come into stationary and continues making noises in the course of shooting. Is this the case? Anyone has experience?