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Forum: Pentax News and Rumors 04-02-2019, 08:46 PM  
Pentax ME-D!!!
Posted By wrench.doozer
Replies: 46
Views: 9,175
an update to the famous craigslist NEd
Forum: Repairs and Warranty Service 03-27-2019, 09:00 PM  
From those that do their own repairs, Lens element cleaning advice?
Posted By wrench.doozer
Replies: 18
Views: 1,073
The streak is in my opinion something not being removed by the solvent in the wipes or by mechanical means. Maybe try methanol if you have it unless this element is coated.
Forum: Pentax Film SLR Discussion 03-10-2019, 04:29 PM  
Back to basics
Posted By wrench.doozer
Replies: 19
Views: 1,126
I used my p30t quite a lot. Love seeing the p3n's labeled as NEd b/c that's my name. I like the look of this series with F lenses.
Forum: General Photography 02-21-2019, 07:10 PM  
How good is 1.5 megapixels? It is this good.
Posted By wrench.doozer
Replies: 17
Views: 1,579
My boss/coworker worked at Kodak thru the 90's in metallurgy. I recently dug up a DCS200 at work rescued from our old research lab before it got leveled. It has pcmcia I seem to remember. We got talking about the awesomeness that was the Kodak research building (83?). The first digital camera I ever used was a DC50.
Forum: General Talk 02-07-2019, 08:37 PM  
Your vehicle: what do you have, why do you like it, and what do you not like?
Posted By wrench.doozer
Replies: 1,810
Views: 99,422
mazda5. a north american 4wd version would be even better. it was too good to last.
with general altimax arctics it dominates in snow.
Forum: Pentax Film SLR Discussion 02-03-2019, 08:42 AM  
K1000 Take apart model.
Posted By wrench.doozer
Replies: 8
Views: 688
yet another overly optimistic fleabayer. if all those BIN prices were legit, I could retire. Reminds me of the 1960s visible series models (in the usa)
Forum: General Photography 01-28-2019, 10:24 PM  
The worst of Craigslist/Shopgoodwill/eBay etc.
Posted By wrench.doozer
Replies: 443
Views: 19,673
yeah our clist is full of that stuff. did you notice the same guy posting a k mount vivitar for like a year?
Forum: Pentax Camera and Field Accessories 01-22-2019, 10:27 PM  
My sturdy tripod project
Posted By wrench.doozer
Replies: 24
Views: 1,283
I was just noticing that Asahi still makes Pentax branded theodolites, levels, & other surveying products.
Forum: Pentax SLR Lens Discussion 01-14-2019, 10:28 PM  
Ricoh lens re coating service!
Posted By wrench.doozer
Replies: 32
Views: 1,609
I agree cleaning would be paramount. Also most coating labs would serve the eye glasses industry, so the trays, lens holders, etc. would be set up for 'uncuts', say about 50mm or so diameter. I've thought about this, as I've been to our local lab called Optogenics on an interview once. But this is all academic.
Forum: Pentax Compact Cameras 12-30-2018, 10:16 PM  
Auto 110 Prices - crazy or what?
Posted By wrench.doozer
Replies: 16
Views: 1,463
i was also seeing this trend. lomo hipsters? i got mine for $3 with the 24mm. thrift store prob thought it was a toy. Just get a cosmicar c mount lens. mine also had undeveloped dollar store c41 film. someday i will cram some e6 film into mine.
Forum: Visitors' Center 12-29-2018, 09:32 PM  
Pentax auto 110 super slr - film advance lever is stuck need advice
Posted By wrench.doozer
Replies: 2
Views: 540
Will the wind lever work with no film in it? Will it move out to 90 degrees from the back. Is the shutter stuck partly open? Not much to go wrong mechanically. I have the non super 110. I am guessing the linkage to the cog which advances the film is in the base of the body.
Did you see this: Pentax Auto 110 Repair Manual
Forum: Pentax K-70 12-23-2018, 10:45 PM  
K70 - wow!!!
Posted By wrench.doozer
Replies: 12
Views: 1,727
I hear you, had a Pentax P30t (which I took some great pics of the Whitby abbey with), & the K70 is my first digital slr. Aside from Whitby, I was in Newcastle in 1990. Caught a bit of Tina Turner in Gateshead with the Geordie hooligans I was with. The K70 will make you want rather need more and better lenses.
Forum: Pentax News and Rumors 12-16-2018, 10:19 PM  
K-70 Placed on Digital Rev's List of Beginner-Friendly DSLR's
Posted By wrench.doozer
Replies: 6
Views: 1,280
Kai W seemed to like it. His review of the K-01 was hilarious. The Sony a68 seems interesting but I never had any A mount stuff.
Forum: Product Suggestions and Feedback 12-12-2018, 10:28 PM  
Automation of focus stacking
Posted By wrench.doozer
Replies: 18
Views: 1,072
I run a (very expensive) focus stacking microscope, Keyence VHX-5000. Setting top & bottom is exactly how it operates, with manual number of images or full auto. It moves the entire camera & lens together. I think knowing the dof for every lens & aperture would be prohibitive, so you'd want to stick to one lens. Of course Keyence know the dof of their lenses at each power. I've wondered how the OM-D EM-1 did it, maybe only with zukio lenses.
Forum: Pentax News and Rumors 12-10-2018, 10:21 PM  
Photography LIfe lists two Pentax DSLR's in the Top Ten
Posted By wrench.doozer
Replies: 30
Views: 4,282
I have no regrets with the k70. If it said nikon on the front it would sell out. The px's are the 2 heaviest on the list. My main gripe is crippling the astrotracer by requiring the add on. It only needs to know lat-long-bearing which could be keyed in.
Forum: Pentax Price Watch 12-05-2018, 09:48 PM  
Rare black Pentax H2 store demonstrator w/ zebra 55 1.8 on eBay
Posted By wrench.doozer
Replies: 3
Views: 585
It was used to demonstrate hammering nails. Maybe someone tried to attach the light meter with a hydraulic press. I've wondered how 'rare' my black s3 is.
Forum: Welcomes and Introductions 11-08-2018, 09:17 PM  
Hello from the snow capital of New York
Posted By wrench.doozer
Replies: 11
Views: 399
at least the sabres aren't terrible right now. No one wants to catch a lake effect storm. Last year we got caught in Pulaski heading back to Syracuse. I can vouch for the K70. Just used it at the 1890 Wickwire house in Cortland. I do not like having to rely on focus peaking and or af for low light, lacking split prism.
Forum: General Talk 10-14-2018, 09:09 PM  
Your latest acquisition
Posted By wrench.doozer
Replies: 16,474
Views: 1,111,338
the past week yielded an Auto 110 with a 24mm lens, hiding on a thrift store shelf for $2. Also, for work, a Smith Victor copy stand with panel lights. Seems perfect for my macro work as it has a scale grid. Not as stout as our trusty old polaroid mp3.
Forum: General Talk 08-29-2018, 09:12 PM  
Who wants a K-1? (the get us over the line thread)
Posted By wrench.doozer
Replies: 950
Views: 13,079
I'm still awake, count me in.
Forum: General Talk 08-29-2018, 09:11 PM  
Your latest acquisition
Posted By wrench.doozer
Replies: 16,474
Views: 1,111,338
My latest is a Sinar Norma with 9x12/4x5 back & 12" f6.3 Kodak Ektar on a Ilex shutter. (bit longish for 4x5) Years ago I picked up a bunch of 4x5 double holders I thought my father could use but they fit the Sinar back. My first large format. Need lots of learning on the ground glass before I start exposing film.
Forum: General Photography 08-24-2018, 09:48 PM  
Amateur Microscope Photography
Posted By wrench.doozer
Replies: 8
Views: 823
I will try to answer you without seeming down putting or confusing. I get paid to do microscopy, but I am still learning.

Do consider what you want to image. Insects? Minerals? Shiny? 1cm wide? 1mm wide? Aside from providing magnification, lighting through the objective lens is possible with some (more expensive) scopes. This is what the scope in the video does, as compared to a typical biological microscope that can only do 'transmitted' light from below. A typical stereoscope can only provide incidental lighting. This would be the same as using a macro lens, which may not be a bad way to start. Macro lenses that do 1:1 mag, using a 24 megapixel aps-c sensor provide about 4 micron resolution. (assuming perfect sharpness) Plenty for most home gamers. This wasn't what you were asking but hope it helps.

To the point: C mount thread (or CS same thing sort of) is what's used to fit cameras to microscopes. I'm still learning about physically adapting. In my brief experience there seems to be multiple 'standards' for the camera adapter tube. There are adapters for the eyepiece which may be the best bet. Make sure to get the correct diameter. These seem to have T mount thread, so you'd need a T mount to K adapter. Then you wouldn't need the trinocular port. But the whole point of a stereoscope is to hold the occulars in front of your eyes the rest is kind of just like a macro lens or not even that good.

I think the challenge is finding a microscope that suits your goals. In the video, the mag isn't even that high I think. I'm guessing that microscope has a beam splitter for lighting. Please avoid buying a cheap microscope & spending lots on adapters. Buy a good microscope & learn microscopy.
Forum: Mini-Challenges, Games, and Photo Stories 08-23-2018, 04:33 AM  
Thematic Scotlands National Flower (From Around The World)
Posted By wrench.doozer
Replies: 79
Views: 2,655
thought to try a thistle to do more dof study with my px-F 100 macro. K70 with wb twiddled post. Got my focus point just in front but good enough to show a little egg somebody put there to be safe from birds.
Forum: Film Processing, Scanning, and Darkroom 08-22-2018, 08:40 PM  
Popular Science tours the Kodak factory
Posted By wrench.doozer
Replies: 20
Views: 1,357
I rue the day walmart (i have lots of names for that store but keeping it friendly) decided to print with Fuji instead of Kodak. Wouldn't have saved Kodak but it's another nail in the coffin. Don't forget Kodak prototyped maybe the first digital camera but made missteps. As I live in Syracuse, plus my father went to RIT in the 60s for graphic arts, and I just picked up a Sinar Norma 4x5 with an Ektar lens, I am hugely hugely in support of this.
Forum: Welcomes and Introductions 08-22-2018, 08:18 PM  
I'm back with a K-70
Posted By wrench.doozer
Replies: 20
Views: 720
plus one for the K70, my only complaint is it would be great to have a quick way to switch 'use aperture ring' to enable for all my manual lenses. I learned a lot on my P30t. Thought I would use my existing zooms but quickly outgrew them. The k70 is making me get better lenses, which actually make me like the P30t more.
Forum: General Photography 08-02-2018, 09:19 PM  
Plastic - Why so much shy-away, hatred?
Posted By wrench.doozer
Replies: 73
Views: 2,649
plastic snaps rather than bends.... I disagree, but I do materials testing. Get some uhmw or delrin, try to snap it. some gears are polymer for wear, sound/vibration, & sometimes planned failure. My p30t has a lot of polymer coating & is amazingly tough.
any product depends completely on manufacturing of the material. a company may change to a cheaper supplier & only do basic incoming inspection.
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