> Polyhead wrote: > > >http://polyhead.net/coppermine/thumbnails.php?album=55 > > #8 and #12 are pretty cool. What's that in #12?
This will take a bit of explanation. That is a 3" R.5 Sandvik/Coromont carbide inserted surface milling cutter. I work in a heavy industrial machine shop, and often times the run times on parts are very long, that night I drug the camera along with me to work. Now on the machine I was running that night, it has a problem that the screw that draws the tapered shank tooling into the spindle (50mm taper for those intrested) is short on torque to unscrew itself if the tool should warm up too much while in the spindle. The whole thing becomes pretty hot at anything above about 1200rpm. So on winter days (we have no heat in the shop), we run this big halogen infared heat lamp over a shelf lined with aluminum plate (without the aluminum plate the wood would start to smolder sometimes) to warm the tools up before placing them in the spindle. The tool was sitting on the shelf as it is in the photo, The heat lamp also puts out a large amount of visible light, and is really the only bright light in the entire shop. The shelf sits well over head, so I took the shot from eye level standing on the ground. The focus isn't as good as I would like. The back ground is the aluminum plate out of focus. > > I have a few short questions. > > Is the Pentax AF200Sa a ttl flash? It has the contacts but i'm > > unsure of what to expect from it. Will it only work with lenses with > > the "A" mode, can it be used in Apeture Priority mode? > > Boz's page says it's non-TTL: > http://www.bdimitrov.de/kmp/flashes/non-TTL/index.html > > http://www.bdimitrov.de/kmp/technology/hot-shoe/index.html Yea, I dunno, the manual on the thing is really bad. I'll just put it away for a backup incase the 283 desides to stop working. > > > The Vivitar 283 apears to be superior in every way, save for the > >lack of TTL contacts. The problem is I'm often shooting on high > >speed film because I am planning on doing sports photography in > >less that good lighting conditions. The problem is, the f-stop > >guide on the 283 stops at ISO 400. Has anyone cooked up a f >stop > guide for iso speeds above iso800? > > I'd just use the ISO 400 guide and close down 1 extra stop for ISO 800, > 2 stops for ISO 1600, etc. Right, well, the problem with that is, the thing is so bright at close range, I run out of stops on the lens above ISO400. :) Thats IF i go by the distance guide on the side of the flash. Anyone know what to expect if i just choose the apeture first, then choose an apropriate filter setting on the flash? > > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- Ben 'Polyhead' Smith KE7GAL -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
