-
no way, setting stuff up and making things easier than optics calculations! - switch off light, face window. lock shutter open if you can, prop up lens. maybe make a quick frame to turn trace into a screen. move tracing paper away from it until distance stuff in focus, check focus with lupe on back of trace. measure distance. repeat with objects closer up as required, shine a desk lamp at them.
anyway, there aren't any sums, if it's a "true" 105mm, I would have thought the distance will be from the middle of the (thickness of the) lens, but the calibration is just to check that. I think.
-
^^ I'm sure others on here have more expertise than me, but first thoughts:
Pinhole exposures - easiest to calculate the equivalent of Sunny16 and then just guess either side, as the times are long anyway. however this won't be consistent enough for slide film. If you want to use a light meter, the cheap old-fashioned sort that have a dial and needle are quite good as you can just mark additional increments on them up to your required f-stop. Or if you have a digital light meter already that you want to use, write down the calculation you need to do on a label and stick it on as a reminder (eg. the exposure for f16 x 8 will get you to f128-ish).
Focal length - can you not set it up to focus on a sheet of tracing paper (use a lupe/magnifying glass too), then you know how far to put it from the film?
-
-
-
-
-
-
I have another four shelves or so I could get rid of but I'm not sure I have the energy to list them. Or carry them all to the pub.
I'm very tempted to use one of these to catalogue all my stuff (seen on Any Questions earlier today) but I think it would just be a massive hole of procrastination...
http://www.delicious-monster.com/
http://www.gcstar.org/
http://www.oxylib.com/ -
-
-
-
-
-
-
-
was going to reply to TheorySwine about 5 pages back, but whatok ^^^^^ also reminded me: there has to be a balance, I mean some kids especially do need to have a healthy fear of consequences, but as has been said many times over the last few days the society we live in basically agrees to live together, there isn't a state or police force in place to make sure we all behave, and nor would we want that. because the idea that people will default to arson and theft unless forced into conformity by the state/police is a sad one. like building a place that is impossible to vandalise or abuse, it is dehumanising to all.
-
-
-
-
-
it's also obvious that on this thread we all have different political opinions regarding this and many other things. I've enjoyed reading them and participating. Let's refrain from calling each other cunts etc because it also seems we are in agreement that this is wrong and we are in effect a community willing to offer each other places to stay in safety if this all goes pear shaped.
+1 one of the best things about the forum. diff strokes and folks. keep the spirit strong.
-
-
-
this thread makes me feel so uncultured...