Help Douglass, Formula for higher magnification on crop sensor, Please
Mar 28, 2013 18:30:13 #
Hey Douglass I can't find this formula you did for me several months ago. I would like to know what magnification my current set up is shooting. I'm liking this and thinK I'll hang with this for awhile. Decent DOF and almost 3 inches when at MWD. I can always back off if in the bush. 2.6:1??? Just a guess Thanks....
3/4 inches
Mar 28, 2013 20:23:19 #
Mar 28, 2013 20:44:27 #
I'm Lost! I screwed up tape is in 64ths.. this is only 3/8ths and not 3/4 Thanks
Mar 28, 2013 21:19:45 #
fstop22 wrote:
Then we double first calculation. 2 x 1.24 = 2.48x.I'm Lost! I screwed up tape is in 64ths.. this is only 3/8ths and not 3/4 Thanks
Mar 28, 2013 21:25:16 #
Nikonian72 wrote:
Yes, I just figured this out. I thought I was going crazy until I looked at my tape measure, Thanks again.Then we double first calculation. 2 x 1.24 = 2.48x.
Mar 28, 2013 21:51:19 #
fstop22 wrote:
This is why I use a metric scale, not an inch ruler.I thought I was going crazy until I looked at my tape measure.
Mar 28, 2013 21:52:16 #
fstop22 wrote:
Yes, I just figured this out. I thought I was going crazy until I looked at my tape measure, Thanks again.
So is this measurement with 68mm ext + the Raynox on your Tokina @ 1:1 on the lens?
Mar 28, 2013 21:58:07 #
LoneRangeFinder wrote:
I'm using 36mm tube with the lens and DCR-250. I'm really liking this magnification, getting a good feel for it. When I went higher I had more problem seeing well enough to focus, I just can't see that fine of detail. I have almost 3 inches working distance at full magnification and can always back off a hair. My shoe mount flash is still powerful enough at this setting also, all the way up to f/25 and ISO100 with softbox.So is this measurement with 68mm ext + the Raynox on your Tokina @ 1:1 on the lens?
DCR-250 reversed sticking out of the 100mm lens, Attached with a few rings. I have better DOF this way
Mar 28, 2013 21:59:51 #
fstop22 wrote:
OK. Now the math makes more sense to me.I'm using the 36mm tube with the lens and DCR-250. I'm really liking this magnification, getting a good feel for it. When I went higher I had more problem seeing well enough to focus, I just can't see that fine of detail. I have almost 3 inches working distance at full magnification and can always back off a hair. My shoe mount flash is still powerful enough at this setting also, all the way up to F/25 and ISO100 with softbox. .
If you want to reply, then register here. Registration is free and your account is created instantly, so you can post right away.