Re: Re: [OM] Macro Questions

[Wayne Harridge]

> Dr. Oben Candemir <dunya.nospam@xxxxxxxxxx> wrote:
> 
> John,
> 
> Correct me if I am wrong; but I feel that the increased standoff
> distance 
> at the same magification would increase the effect of camera shake.
> The 
> reason being that the same amount of "angular" movement of the camera
> 
> translates to a greater linear distance when the subject is further
> away. 
> To see what I mean draw a triangle with the same angle.... the height
> 
> increases the longer the base is.
> 
> So using a 90mm f2 at 0.5x and a 50mm f2 at 0.5x gives you different 
> standoffs... but my reasoning would say that the 50mm f2 has less
> camera 
> shake effect than the 90.
> 
> Your views?

My view:

If the magnification is the same then the same angular movement of the body 
would translate to identical blur of the image.


Wayne Harridge
http://members.optusnet.com.au/~w_harridge

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