Thank you Chris,
However, we are here refering to a specific lens (50-200 SW) and a potential
use of a ring-flash on a 4/3 or MFT body. As simple as that :-).
I know the theory - have practised too, but …
Amities
Philippe
> Le 14 avr. 2020 à 15:50, Chris Trask <christrask@xxxxxxxxxxxxx> a écrit :
>
> One good reason is to avoid "lens shadow" (aka "barrel shadow"). This
> happens when you have the misfortune of using a camera-mounted flash together
> with a long lens while taking a closeup. You can solve this by using one of
> those old "flash extensions" that raise the flash about 4" (10 cm) above the
> camera, use the flash on a coiled extension cable, or bounce the flash off a
> bright object.
>
> You don't see those Olympus flash extensions very often. I have a pair
> of them, and here's one offered on evilBay with a T-20:
>
> https://www.ebay.com/itm/Olympus-Flash-Extension-and-Electronic-Flash-T-20-used-Free-Shipping/283799748793?hash=item4213c880b9:g:eSkAAOSwNBleWoyY
>
>>
>> the original question was "why use a RING flash on a 100-400 eq."
>>
>> And after reading everyone’s answers I still can’t see its justification.
>>
>> It was just curiosity for I no longer have that lens, and have never had
>> a ring flash.
>>
>> Sorry for bothering you all with this. We might simply forget :-)
>>
>
> Chris
>
> When the going gets weird, the weird turn pro
> - Hunter S. Thompson
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