Who makes good loupes that can be focused? Any also have diopters for people like me who also wear glasses?Yes, that is one way of seeing whether you are actually looking at the true focal lane. You can then note the distance of your loupe from the ground-glass. Again Alan, you can do it your way but it is more a "hit or miss" situation whereas with a focusing loupe you are certain that you are at the same reference each time.
Joel
Rodenstock, Schneider, Peak, Wista as well as others.Who makes good loupes that can be focused? Any also have diopters for people like me who also wear glasses?
That's an interesting observation. But what if I'm focusing on the Fresnel rather than the GG? Or is that basically impossible, that the focus as I see it is really the focus of the lens on the GG regardless?Correct me if I am wrong, but having the loupe focused at slightly the wrong plane won't cause you to focus the camera incorrectly, it will just make it slightly more difficult to tell when the camera is properly focused.
When the camera is properly focused, the image through the loupe will be at its "sharpest" - it is just that the image through the loupe (not the image on the film) will never be quite as sharp to you as the viewer as it would be if the loupe was correctly focused.
The challenge arises because it is at least slightly more difficult to tell when the image through the loupe is at its "sharpest".
OK so what I'm using is fine. Maybe not the best, but it does the job. I move the focus in and out to find the best focal point. If the loupe is slightly off, it doesn't matter. I'll still find the focal point. RIght?You can only see an image because of the ground glass.
Right, although "focal point" is probably not exactly the right term. Try "point of accurate focus".I'll still find the focal point. RIght?
Actually, I was thinking about that. It's really no different than when I look through my progressive eyeglasses. I find the focus point even though I may not be looking through the exact part of the lens critical for the distance to the viewfinder. Yet I focus accurately in any case. The loupe would operate similarly. So your original point is correct.Right, although "focal point" is probably not exactly the right term. Try "point of accurate focus".
You may be able to find that point more easily and reliably with an adjustable loupe set to the right distance.
How did get the right prescription? How did you define it to the eyeglass store?After arriving back home and unpacked my camera equipment, I discovered that my rather expensive eye loupe was missing. Drove back and hiked to the spots that I had photographed in hope of finding my eye loupe but no luck. So I bought a couple of replacement "30X21mm" eye loupes off eBay for around $4.00 each. Now if I happen to misplace or lose one of them, I won't be upset. Honestly in the field the $4.00 eye loupes work out just fine.
My favorite"close up loupe" is not a loupe but a pair of prescription close up glasses. They weren't cheap, but they completely correct my astigmatism and their focus is about 8 inches away. Use them sometimes in the field, but their hard case takes up the room of an extra lens in my Chamonix 4x5 kit.
What plastic cover? What's the order?Looks like this thread went a way of its own. I did loosen the screws on the back and it went away, then it came again.
I was told by Hugo that: "
It is Newton rings caused by moisture during shipping.
Very easy to fix: unscrew and take out the plastic cover, the Fresnel lens and lastly the ground glass. Use very diluted soapy water to wash them, then dry them with a hair dryer.
Then put them back in the order your take them out.".
Went to an eye doctor. Eyeglass stores offer great deals on eyeglasses but offer us little on the health of our eyes. For really close-up glasses you have to use a glass with a different refraction index or you will have a pair of very heave and thick lenses. Unfortunately costs a little more initially but money well spent as far as I am concern. Personally have my eyes checked every year, more to check on their health since the prescription changes little if any from one year to the next.How did get the right prescription? How did you define it to the eyeglass store?
Because most of the dudes in LF groups are crusty old timers with terrible eyesight.So why does anyone use a loupe? I'd be better off focusing by eye. No?
Hmmm. I better keep using my loupe.Because most of the dudes in LF groups are crusty old timers with terrible eyesight.
I mean... that’s cool.Hmmm. I better keep using my loupe.
I mean... that’s cool.
I just don’t get all the boomers on forums getting their panties in a bunch when someone asks about a 4x or 8x loop.
it’s like ... I don’t know, I’m 36 and I can see an Owl four miles away.
I guess someday I’ll need a loop and Metamucil
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