FS: Canon Macro Lens EF 100mm f/2.8 USM

sivert55

New member
I have a Canon macro lens I bought to take pics of my corals. I took about 25 pics with at and put it back in the box.
I still have all of the original packaging too.

Model: EF 100MM f/2.8 Macro USM
Canon number 4657A006[AA]

Asking $350
 
My best results for corals generally has been with the pumps off, tripod, F8 (aperture priority mode). Get as close as the focus will allow (straight perpendicular to the glass), then crop the image on the computer. Pretty good results, but still not as good as some others that I've seen here. I set the WB to cloudy, I tried to manually set it and my results were lacking. I also play with the exposure bracketing.
 
My best results for corals generally has been with the pumps off, tripod, F8 (aperture priority mode). Get as close as the focus will allow (straight perpendicular to the glass), then crop the image on the computer. Pretty good results, but still not as good as some others that I've seen here. I set the WB to cloudy, I tried to manually set it and my results were lacking. I also play with the exposure bracketing.

The lower the aperature (F-Stop) - the more depth of field you get, yes? I think I've been using f5 and ISO of 800 for coral macro pics. Full tank shots I go to F12 and iso of 5000 or more.

Anyone have ideas how to take top down pics with a macro lense and a tripod?
 
The lower the aperature (F-Stop) - the more depth of field you get, yes? I think I've been using f5 and ISO of 800 for coral macro pics. Full tank shots I go to F12 and iso of 5000 or more.

Anyone have ideas how to take top down pics with a macro lense and a tripod?

The lower the F#, the lower the DOF. At 2.8, only 1 SPS polyp would be in focus at times. I found F8 to be the sweet spot for most of my shots. I'd play with the ISO and exposure bracketing to get good results. The whole point of the pumps being off is the lack of motion which allows a longer exposure time, which in turn, allows for a lower ISO setting. The higher ISO will get grainy images. Everything is a trade off. For moving fish pics, a faster shutter speed is needed and I crank up the ISO then.
There are top down photo boxes made for top down photos. It is tough to take good top down shots with the water reflection of the lights, and getting perpendicular to the water limits the shot options.
http://www.melevsreef.com/shop/tdpb.html
 
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