bokeh on different lenses

stumac

stumac

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stuart
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I have. Canon 100-400 and was thinking of selling it and getting a 70-200 f4 as I am want to concentrate more on portraits and I need to free up some money. I love my 100-400 but was wondering what difference I should see regarding bokeh with the 70-200 @ 200mm f4 vs the 100-400 @ 400 f5.6.
Was also wondering what difference I should expect to get with overall picture quality ( sharpness etc)
Thanks in advance
 
Anyone? Would love to hear from someone who has owned both
 
Speaking as a 100-400 owner, and I've used a 70-200 f/4 once, you can expect sharper more contrasty images than the 100-400 (though not so much at the shorter focal lengths).

But the background won't be as diffuse at 200/4 as it is at 400/5.6. I expect the actually quality of the bokeh is slightly better if you inspect it, but the long focal lengths of the 100-400 give more leeway for very diffuse backgrounds.

If you're doing portraits, the 70-200/4L should be pretty ideal. Have you considered primes? The 135L is supposed to be sublime for IQ and bokeh
 
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Are you talking bokeh or the depth of field/ability to blur the background you will get? Bokeh is the quality of the blur affected by the number of blades and their shape (as well as the lens construction etc).

As already mentioned the 70-200mm f4 is sharp and the IS version is sharper still. Both are very good lenses!
 
I suppose I'm meaning the quality and amount of bokeh in each lens. I'm just scared of getting rid of the 100-400 and regreting it. I had to save for a long time for it . I also have sigma 50mm 1.4 and canon 85mm 1.8 for portraits
 
stumac said:
I also have sigma 50mm 1.4 and canon 85mm 1.8 for portraits
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Surely you have the right tool(s) for the job already! Perfect focal lengths for portraiture and great lenses for isolating your subject from distracting backgrounds. Don't go splashing out hard-earned cash for a new lens if you don't have to. Put the money toward something you really need, or hold on to it until your photography needs change.
 
Yeah the primes are great but I thought A 70-200 would be nice and flexable, thanks for your replys it's gave me food for thought until I decide what I'm going to do
 
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