Many thanks @w0lfyovi294, very much appreciated. I was a little concerned it might have been too much information, however I wanted to make sure I covered everything off. Notably, having discovered that quite a bit of the information floating about online pertaining to the Kilfitt lenses is inaccurate (or close but not quite right) it's an opportunity to provide an update that hopefully will be useful for those wanting to know more.
@@durlacher3524 I absolutely love the background story and details, especially about the optical engineers making these lenses and the physics around it. You are doing what I dreamt of doing for many years (but I have other priorities and interests now). I started looking for some of these lenses to buy because they are so unique and interesting.
Hi @Snikkelbek, greatly appreciate your comment. A lot of time and research went into this knowing it would be of interest to a rather small yet discerning viewership, The positive feedback is encouragement to continue making more reviews.
Good work! Obviously a ton of research went into this. I noticed an Edixa branded 4cm lens - the only other one I've seen other than my own copy ;-) As you mentioned, they measured focusing distance from the front of the lens rather than to the film plane; not sure if any other manufacturer used those specs or if that's a quirk unique to Kilfitt?
Hi Spectralcav, many thanks for your comment and noted on the Edina branded lens, quite the rarity! With regards to the close focus distance, it seems to be specific to the Kilfitt Makro lenses. The reality being that the 5cm close focus distance quoted for type D lenses ends up being around 20cm from the film or sensor plane when the lens length and flange focal distance is added - still pretty remarkable for 1955!
Thankyou @majorkong7388, appreciate your feedback! More videos to come, hopefully they wont take as long to research and produce (the Kilfitt review was some 6 months in the making).
Absolutely amazing work. One of the most comprehensive reviews I have ever seen.
Many thanks @w0lfyovi294, very much appreciated. I was a little concerned it might have been too much information, however I wanted to make sure I covered everything off. Notably, having discovered that quite a bit of the information floating about online pertaining to the Kilfitt lenses is inaccurate (or close but not quite right) it's an opportunity to provide an update that hopefully will be useful for those wanting to know more.
@@durlacher3524 I absolutely love the background story and details, especially about the optical engineers making these lenses and the physics around it. You are doing what I dreamt of doing for many years (but I have other priorities and interests now). I started looking for some of these lenses to buy because they are so unique and interesting.
interesting, thank you
Many thanks for commenting, very much appreciated.
Great video, thanks!
Hi @Snikkelbek, greatly appreciate your comment. A lot of time and research went into this knowing it would be of interest to a rather small yet discerning viewership, The positive feedback is encouragement to continue making more reviews.
Good work! Obviously a ton of research went into this.
I noticed an Edixa branded 4cm lens - the only other one I've seen other than my own copy ;-)
As you mentioned, they measured focusing distance from the front of the lens rather than to the film plane; not sure if any other manufacturer used those specs or if that's a quirk unique to Kilfitt?
Hi Spectralcav, many thanks for your comment and noted on the Edina branded lens, quite the rarity! With regards to the close focus distance, it seems to be specific to the Kilfitt Makro lenses. The reality being that the 5cm close focus distance quoted for type D lenses ends up being around 20cm from the film or sensor plane when the lens length and flange focal distance is added - still pretty remarkable for 1955!
Outstanding work. I look forward to more videos!
Thankyou @majorkong7388, appreciate your feedback! More videos to come, hopefully they wont take as long to research and produce (the Kilfitt review was some 6 months in the making).