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One of the most enduring Internet falsehoods. Not nodal point. Entrance pupil. The entrance pupil is where the diaphragm aperture appears to be (virtual image) when looking into the lens from the outside (B/T shutter setting).
From https://en.wikipedia.org/wiki/Panoramic_photography
Probably the origin of the "nodal point" myth is that, for a panoramic camera with rotating lens (Horizon, Noblex, Widelux), the lens must rotate about its rear nodal point. And the cause of its persistence is the naming of the Nodal Ninja gizmo.
From the same Wikipedia article:
He’s me! It’s a mirror selfie. The camera is a Rolleicord II with a Triotar lens from the late 1940s.
Since you’ve referenced stitching software, it’s worth mentioning that the Rollei panorama head predates computers by decades and does not rely on Photoshop manipulation to achieve its results. In the gravure scan above, I cropped each of the frames slightly to align them with each other. No stitching software was used or required. Here’s a four-panel panorama shot on the head:
One of the most enduring Internet falsehoods. Not nodal point. Entrance pupil. The entrance pupil is where the diaphragm aperture appears to be (virtual image) when looking into the lens from the outside (B/T shutter setting).
From https://en.wikipedia.org/wiki/Panoramic_photography
Very good. Yes, it's the film that has reacted with the backing paper. Could have been caused by humidity and high temperature. At least you could see that the camera works and that the focus is spot on.I don't know where all the artifacts come from, but it might have been from the film. It was a roll of Rollei Retro 400 S that I had bought a few years ago when I got my Holga, and never used, and didn't store properly (room temperature in the south of France can get quite high...). In any case, I know it works. The one that I shot with the "sports finder" worked pretty well too. Now I know what you meant by the "belly button view", @BrianShawI'll be more careful !
I just received the new screen. Gonna try to install it this weekend.
Yes, it's the film that has reacted with the backing paper. Could have been caused by humidity and high temperature. At least you could see that the camera works and that the focus is spot on.
I have never seen, much less held a Rollei TLR. But I just did buy a Rolleicord V which I should have in a few days.There is a right way to hold a Rollei. It wants to rest on the palm of your hand. The weight and form give it inherent stability — let it sit on your palm, and use your index finger of that hand to trip the shutter. Use the other hand to focus and steady the camera. If you can relax and use a gentle touch, you can handhold long exposures fairly easily.
@JPD, I have never seen one of those little spring-loaded cable release button thingies and was not aware they existed.
When I bought my used Rolleicord V it came with that release. Apparently they are quite rare (and originals are now expensive!) as many were undoubtedly lost over the years- it’s nice someone made some new ones, I always use mine.
I have one that came with a now sold Rolleicord III or V, and I'm saving it for a future Rolleicord V/Va/Vb.
It's one of the accessories I like that a Chinese manufacturer started reproducing, and I hope they make more of them. A downside is that they are unmarked, so a seller could easily take $10 more for one without stating that it's a reproduction.
No idea where he gets his from-
Yaeli, If you have installed a thicker screen your focusing will be compromised. Years ago I bought a new screen off eBay for my Rolleicord IV. It was a Mamiya screen and of a different thickness. I loved the brighness of the new screen as you have mentioned. I ended up sending the camera to a repair outlet and had the focusing readjusted. It is my favorite travel camera being medium format, light and compact.
Half a mm (500µm) at f:4 results in a circle of confusion of 125µm. If I remember correctly, the "consensus" value for the tolerable COC in MF is 50µm. That is eaten by (a) the scene depth of field; (b) your own focusing inaccuracy; (c) the camera's adjustment of taking versus focusing lens. Not good to start already outside the error budget.And the difference in thickness is really, really small, like I mentioned : maybe half a millimeter, if that.
Half a mm (500µm) at f:4 results in a circle of confusion of 125µm. If I remember correctly, the "consensus" value for the tolerable COC in MF is 50µm. That is eaten by (a) the scene depth of field; (b) your own focusing inaccuracy; (c) the camera's adjustment of taking versus focusing lens. Not good to start already outside the error budget.
The Oleson screen should have come with some shim material attached to the instruction sheets.
Its thickness is usually very close to the Rollei ground glass. Something tells me that your 'half a millimeter' is not the actual number. I'd expect a variance of maybe 0.15mm maximum.
I would: either set up a ground glass on the film plane and compare to the focus screen. Or shoot a test roll and do one or two slanted wall shots to see if the focus is off. You say that infinity looks good so I bet that you'll have minimal issues. The instructions will give you ideas on how to adjust if needed. If you don't have the info, contact them and they'll help you out.
On the focus aid, that distraction will go away or at least lessen. Just plow through the mental adjustment for now and see what happens. One thing to watch out for is that you will reframe an image in order to put the aid on your main subject. Then move the camera again to for final framing. With a TLR more than most cameras, it isn't hard to end up moving your whole body, swaying the camera, or such. This can lead to focus inaccuracy at close distances. Be aware of this and keep camera movements reduced with close focus.
No need! I understood that you were p*ed off by the perceived situation, and did not, even remotely, take it personally. If only all exchanges on photrio were as civil.I apologize to you all, and specifically to @bernard_L for my previous answer
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