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So my Pentax 67 has been broken for two years and I decided to replace it with something a lot prettier. I just had to get back into medium format. There's a 55mm f4 on its way. I also picked up a box of Provia 100f. I know that for slide film you need to be a lot more careful with exposure but are there any specific things I should know about shooting Provia?
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Jul 31, 2016 07:51
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I found this lever on my 6X7 that I can't seem to find on any of the manuals online. Is it maybe for using different film formats seeing how its next to the 120/220 switch? There's a little spring loaded pin that keeps it to one side or the other.  
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Aug 1, 2016 06:34
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alkanphel posted:You could have just spent 3 secs on Google: http://www.pentaxforums.com/forums/48-pentax-medium-format/124503-pentax-67-little-switch-m-written-right-side.html
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Aug 1, 2016 06:57
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After a month of my free time I finally finished scanning and editing photos from my vacation to New Zealand and Australia. NZ-2 by Jordan Brown, on Flickr NZ-7 by Jordan Brown, on Flickr NZ-25 by Jordan Brown, on Flickr NZ-31 by Jordan Brown, on Flickr NZ-37 by Jordan Brown, on Flickr
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Feb 23, 2017 04:39
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Finally started developing my own b&w again. Scan-180124-0008 by Jordan Brown, on Flickr
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Jan 25, 2018 00:08
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Blackhawk posted:I should actually have a crack at 3D printing a 6x12 camera sometime. Should be pretty simple to make if I use an LF lens and shutter combo and a lot lighter for the same number of frames as carrying my 4x5 if I want to go on more strenuous hikes. Not sure if I should just go with fixed infinity focus or try to have some kind of zone focus helicoid. I found this working 6x12 design on Thingiverse that I've been meaning to print. The only real issue I can see on it is with film flatness as you can tell from the sample shots. If you have some CAD ability you might be able to optimize it. https://www.thingiverse.com/thing:2852935 There was also the suspiciously similar yet seemingly better designed K-pan 6x14 that showed up on some photo blogs and an unsuccessful Kickstarter. I could never find any files to print it unfortunately. https://www.kickstarter.com/projects/paulhausen/k-pan-the-3d-printed-panoramic-camera?ref=nav_search If you're interested in 3d printing cameras in general you should check out Dora Goodman Cameras https://www.doragoodman.com/. Completely free designs including a zone focusing camera based around mamiya press lenses, also two different focusable 6x7 cameras using rb67 magazines and large format lenses. One of those two even has some limited view camera movements. Edit: After a little more googling I found this set of files for a 6x12 on etsy for $30. It includes a ton of different models for lens cones and and its designed to use a m65 to m65 helicoid. The sample shots look really promising too. Tbh this might be the one I print. https://www.etsy.com/listing/790289977/the-kraken-612-3d-printable-panoramic?ref=shop_home_active_1&crt=1 Ziggy Smalls fucked around with this message at 14:20 on Dec 26, 2020 |
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Dec 26, 2020 13:59
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I've got all of the parts of my 6x12 camera 3d printed. Now I'm just waiting for the focusing helical and the Rodenstock 90mm lens I bought to show up in the mail. Im also going to paint the interiors matte black and add some light seals.   
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Jan 14, 2021 12:31
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eggsovereasy posted:How are you going to focus it, ground glass on the back? Just like Ansel said you calibrate the lens with a groung glass on the film plane in conjunction with a rangefinder if you have one. The guy who designed the camera just uses paper wrapped around the helical with distance markings to know where he's focused to but I'd like to make something more solid. Maybe a 3d printed ring with the markings engraved in and filled with paint.
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Jan 15, 2021 00:22
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Blackhawk posted:Also thanks for the inspiration, I've been meaning to try some 6x12 for ages and never got around to it but that Kraken camera looks good and I'm close to dropping the hammer on a 90mm lens and helicoid. Already have the printer and some black filament so pretty good to go, and it would be a lot lighter than my 4x5 setup if I want to hike a long way or take it mountaineering or something. I'm excited someone else might pull the trigger too! What I really wanna do is take some panoramic star trail shots with mine. I did a single attempt with provia 100f in my pentax 67 years ago that came out great for a first try. I'm on my phone so I only have a low res file but you get the idea. 
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Jan 15, 2021 04:26
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Little tip for anyone 3D printing a camera. Make sure the backside of your lens fits inside your lens cone before you pay 300$ for it. I had to grind out some of the interior of my lens cone. Good thing I made it 50% infill and 5 shells
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Jan 20, 2021 10:39
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Blackhawk posted:I'm surprised that the rear element of your lens would fit through the helicoid but not the cone? Unless the rear element doesn't fit through the helicoid and you have to assemble the lens into it? The 90mm f6.8 Rodenstock Grandagon-N has a 61mm rear element. I haven't received my helicoid yet but I'm pretty sure I'll have to assemble the lens onto it.
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Jan 22, 2021 10:24
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 My 6x12 camera is fully assembled. Now I'm just waiting on my ebay purchased accessory rangefinder to show up.
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Jan 25, 2021 08:27
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eggsovereasy posted:yeah i don't even know what i'm looking at and that's fun Looks like the crystals that form with zinc when you hot dip galvanize steel sheet. I always thought it was pretty.
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May 24, 2021 14:49
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Are you shooting with 20x24 sheet film? Also i looked up that Zeiss lens and its image circle is a meter. 
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Jun 21, 2022 02:16
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Ethics_Gradient posted:What have other people's experiences been when confronted with baggage screeners who want to either open a box of film/film back, or put it through the xray scanner? I dont have experience with sheet film but i went on a trip to New Zealand and Australia a few years back with zero problems. For 120 rolls I left the plastic packaging on the fresh ones and made a point to finish any rolls left in my camera so it could be scanned worry free. I also kept all the rolls shot or not inside the original paper 5 roll package. Those packages were inside a ziplock bag to easily take out of my carry on while going through security. Half the time theyd swab one of the boxes and that was it. As for paint theres always basic matte black rustoleum which I used for the inside of my 6x12 3d printed camera. If you wanna go fancier you could try that super light absorbing Black 2.0 paint but i doubt its durable.
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Jul 24, 2022 06:51
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Ethics_Gradient posted:Tell me about your 6x12 camera! I am in the process of printing the Berg 6x17 right now; farmed out the bellows to eTone in China to the tune of US$90 because I know mine would turn out horrible and I know they do good work. I spent this afternoon trying to cut the ground glass from a broken 8x10 plate and then wasted a perfectly good one before giving up and calling a framer, for I found an article about a camera design called the Kraken 6x12 and the creator was selling all the files for $30. The design uses a focusing helical you can easily buy on ebay and that alone sold me on it cause every other design I saw was fixed focus or used bellows. It also came with lens cones for focal lengths ranging all the way from 58-180mm.  After printing the camera I found a now seemingly defunct camera company on Ebay called Fotoman that sold this incredible universal viewfinder. It used interchangeable masks that slotted into the viewfinder so it could work with almost every film size and focal length combo. They made some pretty nuts modular film cameras so its sad they shut down. Thinking about it now I bet they were trying to be a more affordable version of Alpa but that niche is so tiny as it is. Check this 4x5 camera out:  Despite being so relatively thin it still had rise and fall movements. I have some light leaks to iron out but its pretty solid and the focus seems consistent enough across the frame for my hobbyist use.  I've got a small vacation next week so I'm hoping I'll be able to shoot a roll or two. Ziggy Smalls fucked around with this message at 10:32 on Aug 6, 2022 |
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Aug 6, 2022 10:26
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my problem is solved. Is something I want to learn though, need to keep an eye out for a stained glass windowmaking workshop or something.
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Ethics_Gradient posted:That is so cool! What lens are you using on it? Bellows definitely add another potential point of failure/jank; I got pretty ordinary results with the 35mm panoramic camera I tried to make out of a Nimslo, macro rail, and 6x9 folder bellows back in uni. I'd like another crack at it using a helicoid and 3D printer to make a lens cone like your camera, but with what Nimslo's cost these days, don't think I can justify butchering another one. I bought a 90mm f6.8 Rodenstock Grandagon-n off of ebay. I wish i had gotten something wider for landscapes though. The viewfinder is great but yeah i imagine it has issues when you get to longer focal lengths. I have the mask for 6x12/90mm and only plan to use it for even wider lenses. The travel mechanism and film plane setup is incredibly simple. Its just a combination of built in tension on the winding knobs and the film being sandwiched between the back cover plus a pair of flat rims at the top/bottom edges. You keep track of your frame count via a small hole on the back cover which lets you see the numbers printed on the 120 roll's paper backing.
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Aug 7, 2022 00:03
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frogbs posted:
I dont 6x4.5 counts though
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Oct 11, 2022 22:51
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| # ¿ Apr 29, 2024 01:12 |
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frogbs posted:Personally anything larger than 35mm = Medium Format. 6x4.5 is much larger than 35, so I think it's worthy of being 'medium'. My first 120 camera was a 645 bronica so I can say that.
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Oct 12, 2022 04:53
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