traveler_101
American abroad
According to what I have read, if you shine a strong light on a lens you can tell if it is coated:
"Bring it under a light (Sunlight is best but a table lamp will typically work also) the coating usually has a different colored reflection then a plain glass lens. You may have to view it from multiple angles to see what I'm taking about."
Well I tried it with my modern Voigtlander lenses and it's pretty darned obvious that they are coated. Also, looking at my 1936 Summar I can tell that it is not coated.
However, I also have a 1946 Elmar which is harder to read. 1946 is around the point they began to coat the lenses. I see some coloured reflection, but it is subtle and I am not sure. I just took this photo which may, or may not, help. Most of what I see is a purple colour, some of which you can see in the photo.
Thanks in advance for any help.
https://www.flickr.com/photos/93975264@N05/15934165808/in/photostream/
"Bring it under a light (Sunlight is best but a table lamp will typically work also) the coating usually has a different colored reflection then a plain glass lens. You may have to view it from multiple angles to see what I'm taking about."
Well I tried it with my modern Voigtlander lenses and it's pretty darned obvious that they are coated. Also, looking at my 1936 Summar I can tell that it is not coated.
However, I also have a 1946 Elmar which is harder to read. 1946 is around the point they began to coat the lenses. I see some coloured reflection, but it is subtle and I am not sure. I just took this photo which may, or may not, help. Most of what I see is a purple colour, some of which you can see in the photo.
Thanks in advance for any help.
https://www.flickr.com/photos/93975264@N05/15934165808/in/photostream/