Do we still "need" fast lenses ?

Started 6 months ago | Discussions thread
jfriend00 Forum Pro • Posts: 12,364
Re: Do we still "need" fast lenses ?
1

Sergio Subrizi wrote:

Considering we have:

sensors with incredible iso performances compared to films

in camera +- 5 stop VR

Auto gain viewfinder

I can only see a shallower depht of field when used wide open as great advantage

at the expense of weight and $$$ ( for the same level of quality)

Do I miss something ?

There's no question that improved AF performance and massively improved high ISO IQ has made it acceptable to use f/4 lenses in a lot of circumstances that you couldn't get acceptable results 10 years ago.

That said, there are still situations and images where a fast lens may produce a "better" image (subject isolation with shallow DOF, lower noise, faster AF, etc...) if the photographer has it and can afford it.

And, as others have said, an f/2.8 lens is often higher IQ at f/4, than an f/4 lens if you happen to be shooting both at f/4.  It doesn't have to be that way, it just often is.

So, do we "need" fast lenses?  No.  Do they help make better images sometimes?  Yes.

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John

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