Re: Progress on the incognito case
On the subject of going full engineering nerd, my brain keeps coming back to how to make one of these as a “real product”. I really ought to be wasting my time in a more productive manner. Some of y’all might be amused by the thought experiment. I’ve been doing more tweaking on the design ideas.The Pentax 645 mount has a diameter of about 61mm. That means that you could make plates with p645 mounting flanges, then make Pentax K-mount back caps that have 645 lens side flanges on them that would lock into the plates. You could also make back caps that fit other lens mounts, Nikon etc. that also mounted into the plates. I’m beginning to realize that you would want the mounting plates to be of different sizes and hole spacing depending on the diameter of the lenses and sunshades. Probably half inch increments from 2.5”-4.5”. You might also want some sort of way of elevating the lenses, maybe the equivalent of extension tubes, maybe something that is just a storage area under the squares (store filters?). There would also be a need for spacer plates to make up the difference when having mounting plates of different sizes adjacent to each other. It would ultimately also need ways of holding lenses on their sides, and ideally ways of making them pretty much drop ins for pelican cases. -- Larry Colen l...@red4est.com -- %(real_name)s Pentax-Discuss Mail List To unsubscribe send an email to pdml-le...@pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Progress on the incognito case
Looks like something an engineer would do. BTW - I R 1 -Original Message- From: Pentax-Discuss Mail List Sent: Aug 6, 2021 4:17 AM To: Pentax-Discuss Mail List Subject: Progress on the incognito case Ive made progress on my incognito lens case. Im not completely thrilled with the layout but it seems to be pretty close to workable. Id like to improve the mounting of the tray for the small primes so there is more functional storage underneath it. https://photos.app.goo.gl/4xx9sQvo2FUeL6kNA I should figure out how to make dividers, and maybe put some soft foam on the underside of the lid to help keep things in place. What Id really like to do is 3-d print back caps that had tabs on the outside, and basically make bayonet mounts for them, so that I could latch them into the hard case, but when I wanted to put them in a smaller camera bag, Id take out the lens, back cap and all, and just go with that. -- Larry Colen l...@red4est.com -- %(real_name)s Pentax-Discuss Mail List To unsubscribe send an email to pdml-le...@pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. Ken Waller -- %(real_name)s Pentax-Discuss Mail List To unsubscribe send an email to pdml-le...@pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Progress on the incognito case
The famous, largely unschooled, English Canal Engineer, James Brindley, designed his canal systems mentally while sitting in a darkened room. His famous Bridgewater Canal featured aqueducts over rivers which ultimately ended the monopoly of the river boat transporters in the Birmingham area. Then came the railways which put paid to the narrowboat traders but the canals live on for recreational purposes! Alan C On 06-Aug-21 07:28 PM, Larry Colen wrote: On Aug 6, 2021, at 7:56 AM, Ken Waller wrote: Looks like something an engineer would do. BTW - I R 1 Guilty as charged. My definition of a natural born engineer is someone who will spend three hours figuring out how to do a 30 minute job in 20. -- Larry Colen l...@red4est.com -- %(real_name)s Pentax-Discuss Mail List To unsubscribe send an email to pdml-le...@pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- %(real_name)s Pentax-Discuss Mail List To unsubscribe send an email to pdml-le...@pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Progress on the incognito case
> On Aug 6, 2021, at 7:49 AM, Paul Sorenson wrote: > > How about this...use a bayonet body cap mounted bayonet up in the case and > use a double rear lens cap on the lens. Lens fits into one side of the > double cap and the other side captures the bayonet body cap. Will probably > cost about $20/lens but might be cheaper and certainly more available than > something 3D printed. That’s an idea, though if I were doing that I could glue a body cap to the back side of the back cap, and that way I could latch the lenses in with either the custom cap, or directly without the custom cap. It turns out that 3-d printing isn’t too expensive if you have a friend that can do it for you. -- Larry Colen l...@red4est.com -- %(real_name)s Pentax-Discuss Mail List To unsubscribe send an email to pdml-le...@pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Progress on the incognito case
> On Aug 6, 2021, at 7:56 AM, Ken Waller wrote: > > Looks like something an engineer would do. BTW - I R 1 Guilty as charged. My definition of a natural born engineer is someone who will spend three hours figuring out how to do a 30 minute job in 20. -- Larry Colen l...@red4est.com -- %(real_name)s Pentax-Discuss Mail List To unsubscribe send an email to pdml-le...@pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Progress on the incognito case
How about this...use a bayonet body cap mounted bayonet up in the case and use a double rear lens cap on the lens. Lens fits into one side of the double cap and the other side captures the bayonet body cap. Will probably cost about $20/lens but might be cheaper and certainly more available than something 3D printed. -p On 8/6/2021 3:17 AM, Larry Colen wrote: What I’d really like to do is 3-d print back caps that had tabs on the outside, and basically make bayonet mounts for them, so that I could latch them into the hard case, but when I wanted to put them in a smaller camera bag, I’d take out the lens, back cap and all, and just go with that. -- Larry Colen l...@red4est.com -- %(real_name)s Pentax-Discuss Mail List To unsubscribe send an email to pdml-le...@pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- Paul Sorenson Studio1941 Sooner or later "different" scares people. -- %(real_name)s Pentax-Discuss Mail List To unsubscribe send an email to pdml-le...@pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Re: Pentax-F 50/1.7 on a5100
Collin, I can't follow all your thoughts on gear acquisition. All I can say is that the K-70 with its 24 MB sensor is still a very capable DSLR for its money. I recently purchased one to use it with the 55-300 PLM and I'm very pleased with the results. I have never been a fan to work with adapters. Henk Op 2021-08-05 om 23:14 schreef coll...@brendemuehl.net: Ok, I’m not totally switching. Not even partly. Just wanting to see how well the Pentax-F 50/1.7 works on the a5100. It works pretty well. The only problem is focusing in bright light. What a pain with no viewfinder at all. I think on of those shoe-mount gizmos form the 50s might be in order. Anyway, I shot an image with the K5 & a5100, both with the same lens. Obvious improvements come with both resolution and sensor generational improvements. (Would be fascinating to see that with a current sensor.) I was debating getting a Zeiss for the Sony and maybe a matching one for a K-70. (K-5 is for sale.) Maybe. But I’m wondering about one Zeiss (ZK) and that pricey adapter. Or a 31 & the adapter. Either way all good results. I was also surprised to see how long the K-70 has been on the market. Five years is several lifetimes in the tech world. Amazing. \*\*\* side note. Pentax rear lens caps work for Sony rear lens caps. https://www.flickr.com/photos/101533246@N02/albums/72157719694883175 -- %(real_name)s Pentax-Discuss Mail List To unsubscribe send an email to pdml-le...@pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions. -- %(real_name)s Pentax-Discuss Mail List To unsubscribe send an email to pdml-le...@pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
Progress on the incognito case
I’ve made progress on my incognito lens case. I’m not completely thrilled with the layout but it seems to be pretty close to workable. I’d like to improve the mounting of the tray for the small primes so there is more functional storage underneath it. https://photos.app.goo.gl/4xx9sQvo2FUeL6kNA I should figure out how to make dividers, and maybe put some soft foam on the underside of the lid to help keep things in place. What I’d really like to do is 3-d print back caps that had tabs on the outside, and basically make bayonet mounts for them, so that I could latch them into the hard case, but when I wanted to put them in a smaller camera bag, I’d take out the lens, back cap and all, and just go with that. -- Larry Colen l...@red4est.com -- %(real_name)s Pentax-Discuss Mail List To unsubscribe send an email to pdml-le...@pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
