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  1. Re: Best 75mm / 90mm lens?......totally kidding, but not really...read on pls

    Yes that is what I said Drew. I believe the confusion comes from the fact that most people have experience with 35mm (or 120) SLRs or modern DSLRs and there are not center filters for those lenses...
  2. Re: Best 75mm / 90mm lens?......totally kidding, but not really...read on pls

    No they don't, if we are talking about modern retrofocus designs. Sure, the 21mm Biogon for Contax 35mm rangefinder has the same basic fall-off characteristics of the 75mm Biogon on 4x5, but the...
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    Re: Forum Growth.....or not?

    I definitely get a variety of PM's and direct emails from "lurkers" or very low participation members about different things. I got a ton of emails after I organized a group buy (after closing it)...
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    Re: Has Number LFF Members here dwindled?

    Well, as an interesting data point, the forum says that:

    Most users ever online was 12,386, 19-Oct-2020 at 20:31.

    The most users ever were online just a few months ago, so that's an encouraging...
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    Re: Display Options:

    I have displayed plates mounted directly to wood. Including old barn wood that was most certainly not "archival" ;).

    For protective purposes, I have mounted plexiglass over the plate using bolts...
  6. Re: Best 75mm / 90mm lens?......totally kidding, but not really...read on pls

    1. Retrofocus design (SLR, due to mirror constraint) vs. non-retro ~symmetrical design (RF / LF) PS: they do have fall-off that is corrected by stopping down, due to mechanical vignetting, just like...
  7. Re: Best 75mm / 90mm lens?......totally kidding, but not really...read on pls

    Dan, don't most modern wide-angles use the tilting pupil design? Glancing at a couple of my lenses, they all seem to have it to an extent (compared to my actual 75mm Biogon).
  8. Re: Best 75mm / 90mm lens?......totally kidding, but not really...read on pls

    Of course they exist for a reason. And of course one should use them if they are really, really worried about even illumination.

    Whilst I often shoot at f/22, or beyond, I also don't mind shooting...
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    Re: Too good to be true?

    Caleb, you were asking for part numbers and specifics.

    Anyway, don't need to derail this any further.
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    Re: Backpacks for pano ULF

    LOL

    Well the 12x20 certainly causes a new problem in that regard! Current solution: carrying the camera and one film holder inserted into the back in one hand, tripod in the other, rather small...
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    Re: Too good to be true?

    I'm afraid I'm not as selfless as Linus Torvalds. It does not benefit me to release complete design documentation. I also need to either learn or contract out software development and consider design...
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    Re: Too good to be true?

    It's just a light, you still need a negative or digital carrier system like I've designed. It doesn't display images.

    Edit: I spent some time looking for spectrum information, and other data on...
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    Re: MF (6x4.5,6x6,6x7,6x9,6x12) B&W film images sharing

    Nearby there, I'll message you.
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    Re: Too good to be true?

    There's no need for that. IMO.
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    Re: Too good to be true?

    HMG, my design is using the original heads, so I can do color as well - at least in theory as I still haven't tested the actual workability of this. His solution is just an app for use on any device...
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    Re: Too good to be true?

    Hmm. Wish he lived somewhat close. With my little homebrew digital enlarger, some tweaking to his system, and a full-spectrum LED light I actually could build a complete digital enlarger system that...
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    Re: MF (6x4.5,6x6,6x7,6x9,6x12) B&W film images sharing

    Today I went out to a remote and not very well-known archaeological site, where a Native American settlement from around 1000 A.D. is located. There's a lot of mystery and rumors around this site,...
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    Re: Show Me Your Night Shots!

    I like those.

    Take Two in my backyard, no moon this time, but using the warmer I just got off Amazon. Just Orion rising, and a bit of play with tilt and a wider aperture. And most differently...my...
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    Re: Chamonix vs. Xxxxx?

    Agree with SergeyT.
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    Re: Chamonix vs. Xxxxx?

    It's one slider in Lightroom, if you choose to try it out. Of course as mentioned it also depends on movements applied, but you can also de-center it in Lightroom as well. I would say 20-30 seconds...
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    Re: Show Me Your Night Shots!

    I'm well aware of the phenomenon, but for a long time I lived in south GA where it almost never got that cold to begin with. And it doesn't up here everyday either. Anyway, a heater thingy from...
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    Re: Prototype RF-coupled 4x5 camera

    Thanks for the info Kumar. I was referencing B&H's current listed price...interesting you could get one for 60% less.
  23. Re: Nikkor-T 360mm / 500mm / 720m: 500mm at full aperture with 4x5 film, how good?

    I would consider a typical 240mm or 300mm f/5.6 and take another step forward. Maybe a Tele-Arton 270mm f/5.5 - I had one and it was really good wide-open - and you won't have the bellows extension...
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    Re: Prototype RF-coupled 4x5 camera

    Okay, good to know about the Wista lobes, my bad. I disagree about the rest of your points. Just look around here - many talk about how there's no perfect camera and therefore multiple cameras is the...
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    Re: Prototype RF-coupled 4x5 camera

    Please let me know how many folks are using movements or trying to shoot macro with handheld 4x5. Interchangeable magazine is a debatable point but plenty of folks are using standard film holders...
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    Re: Prototype RF-coupled 4x5 camera

    Some perspective: the two RF-coupled 4x5 cameras available right now cost about $9.900 (Wista RF) to $13,000 (Linhof Master Technika Classic). This is just the camera, no cams (or viewfinder on the...
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    Re: Prototype RF-coupled 4x5 camera

    Hear hear, Oren!

    Let it go Bob!
  28. Thread: Secure selling?

    by Corran
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    Re: Secure selling?

    There is nothing to modify with your account. If you can send money, you can receive money. Well, you'll have to attach a bank account, which I suppose you might not have yet if you've only been...
  29. Re: Nikkor-T 360mm / 500mm / 720m: 500mm at full aperture with 4x5 film, how good?

    I always shoot these at f/22, in whatever configuration. And generally at infinity and without significant out of focus areas. I think the general consensus is that's the sweet-spot, which is only...
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    Re: Chamonix vs. Xxxxx?

    More CF confusion? Well you've already sprung for the big 82mm filter fast 90mm so 77mm filters won't work anyway. If you wanted to keep to 77mm an f/8 lens and less worrying about a small amount of...
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    Re: Fitting Graphic-Kowa 210mm F9 in Copal 1

    Some Copal shutters have aperture scales that can be removed and replaced. Find one for a 210mm lens and you'll be "close enough" for most things. If you need extreme precision get one made or buy a...
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    Re: Kodak industrial x-ray film

    4 1/2" x 17" is certainly an interesting size. Almost 1:4 ratio, 440mm IC needed. Oh and a camera/holder ;).
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    Re: Intrepid 4x5 as a permanent enlarger?

    Your profile doesn't include a location. I suggest you add it - someone might contact you from here. *edit: just saw the above. Make them an offer?

    I bought my first enlarger from a somewhat local...
  34. Thread: Secure selling?

    by Corran
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    Re: Secure selling?

    Good luck getting most folks to send you checks / MO. Especially as a new member with no record or personal history on the site.

    Get a PayPal account.
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    Re: Does anyone use GND filters on B&W film?

    Yes. I also use the darkslide on occasion as a "GND" - if the exposure for the foreground is 2 seconds, I put the DS in front of half the lens for one second to get a 1-stop reduction in exposure in...
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    Re: Show Me Your Night Shots!

    It's growing on me. Will have to look harder at the lens heater things they sell. Never needed one, before.
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    Re: Prototype RF-coupled 4x5 camera

    All of which are designs 50 years old, if not much more. But of course we have the usual bashing of products you'll never use or even see. Let's see what they come up with using modern manufacturing...
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    Re: Show Me Your Night Shots!

    Wanted to try this. Setup a composition in my backyard and shot this over the course of 6 hours. When I went out to close the shutter though the temps had dropped much lower than expected and my lens...
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    Re: Old Cars, Trucks and Motorcycles

    30x40 inches? Always fun seeing such large prints. I like the play between car and house.
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    Re: Which are the fancy lenses??

    You can see my recent post in the Old Cars thread for a "cult" lens with extreme "out of focus" areas (f/2.5, plus tilts for less DOF). Like it or hate it, it exists, and one can choose to use these...
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