Open Photography Forums Forum

So first been awhile, this is from a shoot last year. It was partially for my costume set, but due to circumstances the project was halted for a time. This image is of Belle Amelie wearing the prototype skirt from the Elemental Goddess of Fire. I have had two models wear it, was checking for how it looks before proceeding to modify it as planned for the eventual final version. I may still finish the costume as we have all the cloth needed. but circumstances got in the way of inspiration... Read more

Donald Norwood's initial quest was for a system that would facilitate the determination of the "proper" photographic exposure during the photography of a human face (head, actually) using the "key-fill" lighting technique, ideally allowing this to be done with a single measurement with an appropriate "incident light" instrument. In support of his approach to this, he ran an elaborate series of tests that showed, as the key light (with a certain fixed "potency" at the subject) was... Read more

I just realized I never posted this one here. So found out my newer camera will do a thing, in camera, so had to try it out. It is posted here in this sub-forum because obviously the model is not wearing much So apparently I can set my camera (Canon R5c) to do a multiple image thing. Up to at least 5 images. I kind of think I could do a better job using Photoshop combining multiple images into one, but still it is kind of cool thin to be able to do it in camera, even if it takes some... Read more

Not the best image, but options were limited, given I likely could not have taken the picture inside the grounds of the port. So took through window from Car on freeway when coming back from dentist. Driving to the Dentist I saw all those yellow things first and I was like what are those and then I noticed the Wind Generator towers. The Yellow parts are likely the transition pieces for the towers (the part that sits at surface level to take the waves). I had heard they were starting to... Read more

Standard f-number values and their "labeling" is covered by standard ISO 517. I have only the first several pages (a "free sample"). In that is this list of "standard series of f-number marking": 05.-0.7-1-1.4-2-2.8-4-5.6-8-11-15-22-32-45-64-90-128 These are of course 1n 1-stop steps. There may be standard "rounded" values for 1/3- and 1/2-step series elsewhere in the standard, but not in the part I have. Or it my be that such lists have only been concocted by camera manufacturers. (There... Read more

In several threads here over the past couple of weeks, I have been fairly emphatic that there could be sequences of numbers that would obey both of these "rules" for a substantial number of values: • If we go from one value to one 3 values further in the list, the value would change by exactly 2. • If we go from one value to one 10 values further in the list, the value would change by exactly 10. Fellow member Ted Cousins has challenged the validity of this. Upon further study of this... Read more

I have been brooding here lately over the matter of exposure meters that, for the incident light exposure metering mode, offer two confirmations, one with a hemispherical (dome) light collector (which we expect would give the meter a cardiod directivity pattern) and one with a flat (disk) collector, which we would expect to give the meter a cosine directive pattern. Almost invariably, the manufacturers of those meters state quite different values of C, the incident light metering calibration... Read more

Hey hey OPFers! I might be back! Sorry for the long (very) absence but the covid time has brung me so much more work as before… I'll try to post here at least one photo each week as "My photo of the week". Pardon me if Ido not lurk around and post elsewhere, but I'm still overwhelmed… I just arrived in Venice (Italy) for a week as it's time for a "self" residence, to decompress and prepare the images for our future exhibition (with Romain Claris for the films) at the Fonds Culturel de... Read more

I have discussed many times in recent threads that there can be a series of numbers that obeys both these rules: • If we start with any value and go forward in the list by 3 values, the 2nd value is exactly 2 times the first. • If we start with any value and go forward in the list by 10 values, the 2nd value is exactly 10 times the first. I had said that the longest list following those rules would be 30 values in length. That was in error. We can have a list following those rules... Read more

The table below gives three lists of values of the ISO speed that may be of interest: The values in the first columns ("Base list") we so chosen that they all absolutely and precisest follow these two "rules" • If we start with any value, and then go down in the list by 3 values, the second value is exactly 2 times the first value. • If we start with any value, and then go down in the list by 10 values, the second value is exactly 10 times the first value. There could be many... Read more