They will likely toss you out on your ear if you use flash. Butterflies are quite delicate and react badly to most "non-normal" intrusions. At the Butterfly Garden in Gainesville, FL, I shot between ISO 400/640 and pretty much shot everything manual 5.6 @ 1/1600 to1/2500 with a 100mm 2.8 Tokina telephoto/macro.
View attachment 38475
I shoot flash all the time at Denver Butterfly Pavillion.. with no issues. I have been to around six different butterfly gardens, and all allowed flash.
Thanks to everyone for your comments and information, I always find the artistic side of photography easier to deal with than the technical side. But I am getting there little by little thanks to all of you!
They will likely toss you out on your ear if you use flash. Butterflies are quite delicate and react badly to most "non-normal" intrusions. At the Butterfly Garden in Gainesville, FL, I shot between ISO 400/640 and pretty much shot everything manual 5.6 @ 1/1600 to1/2500 with a 100mm 2.8 Tokina telephoto/macro.
View attachment 38475
I shoot flash all the time at Denver Butterfly Pavillion.. with no issues. I have been to around six different butterfly gardens, and all allowed flash.
Going to be in Denver in a couple of weeks. Got a pretty full schedule, but depending on weather, may be able to squeeze something in. Where is the butterfly pavilion?

Very nice details Charlie, this is the closest I have to yours
130309_0855 copy by MiFleur, Catching Up!, on Flickr
Nice pictures! I was just thinking earlier that it would be nice to go to such a place. I especially like the last one. Great DOF and it looks pretty sharp. It's my favourite point of the view of the monarchs (is it a monarch? I know there are other species that look similar) and the orange contrasts well with the green leaf behind it. Well done!