John K

Sorry for the late reply Sara. I haven't tried reversing a lens yet -once I go the MP-E 65mm there just wasn't a need to.

Really well executed Phil, and the light looks great!

My memory goes back to the late 80s when I was shooting Fujichrome Velvia (color positive slide film) and it was well understood that ISO was as much a part of exposure as aperture and shutter ...

...and yet you argued with me like you didn't understand it...

From a simple Google search: "Is ISO a part of exposure?": "Is ISO exposure?The three camera settings that give you control over the exposure - aperture, shutter speed and ISO - can each be ...

That's an oversimplification. The signal produced by the photo sensors at ISO 1600 had to be amplified 16x higher than the light was amplified when the sensor was set to ISO 100 (and even at ISO ...

I really feel sorry for the little guys cause the weather has been terrible. In January we had a few 70 degree (~20C) days, and then a few weeks ago it snowed. Now we've got cold temps and rain. ...

Lower ISOs exhibit less noise than higher ISOs simply because setting the ISO on your camera higher increases the amount of amplification that has to be done on the signal that the sensor is ...