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Hoya Enlargers
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PostPosted: Tue Jan 29, 2013 12:50 pm    Post subject: Hoya Enlargers Reply with quote
Any experience with Hoya enlargers?

I see they have a 50mm Super EL F2.8 (6 elements)

Also a 75mm Super EL F4.5 (not sure how many elements)

Is there a large difference between say a 6 element Hoya or Nikkon and a 3 element Industar? Is it mostly CA, or is there a large image quality difference as well?


PostPosted: Tue Jan 29, 2013 2:07 pm    Post subject: Reply with quote
I assume you looking at them for picture taking?

I think the hoya el series lenses are re-branded computars dls. Same as beseler color pros.

The industar should be 4 elements and yes, there should be a noticeable quality difference. Center performance may be close but the industar will falloff towards the edges. That, however, becomes less apparent when stopping down. I don't know about CA. Never used enlarger lenses off of an enlarger...


PostPosted: Wed Jan 30, 2013 12:09 am    Post subject: Reply with quote
Made by Kowa so should be good quality.

If using an enlarger lens 75-80mm or longer, it doesn't really matter whether it is a 4-element Tessar type or a 6-element Planar type as the edges will be outside the part of the image circle used by an APS-C sensor.


PostPosted: Wed Jan 30, 2013 1:11 am    Post subject: Good to know! Reply with quote
iangreenhalgh1 wrote:
Made by Kowa so should be good quality.

If using an enlarger lens 75-80mm or longer, it doesn't really matter whether it is a 4-element Tessar type or a 6-element Planar type as the edges will be outside the part of the image circle used by an APS-C sensor.


Thank you!

so using one of these with my pentax crop sensor camera, will use the "sweet" area of a 75mm or higher, enlarging lens?

I guess the worry comes into play when using with Full Frame or Medium/Large format?


PostPosted: Thu Feb 07, 2013 2:52 pm    Post subject: Hoya Super EL Reply with quote
Hoya Super EL (enlarger) arrived, in better condition than advertised. Not a mark on it, anywhere!!

50mm 2.8 (fairly weighty lens)

Now I just need to wait for my helicoid and I am off to take some pictures. Smile




PostPosted: Thu May 30, 2013 6:42 pm    Post subject: Reply with quote
I'm not sure if anyone cares about this anymore but I have been researching these lenses lately and have my doubts that the Hoya El = Computars = Beseler ColorPro equation is actually true. At the time, I just repeated what I had read elsewhere but there's definitely some inconsistencies.

I believe the Beseler ColorPro and Hoya EL were the same lenses for a time. I have yet to determine the actual manufacturer though. The lenses have a golden single coating and look very similar (not just cosmetically but size of elements, etc). After a point though, the ColorPro name gets put to a different set of lenses, the Computars. I don't think the Computars were ever Hoya ELs, so that means that the ELs were probably not made by Kowa. Computar/Kowa enlarger lenses have a blue/purple coating and the 50mm has a large back element, right to the edges of the 39mm mount.


PostPosted: Thu May 30, 2013 8:06 pm    Post subject: Reply with quote
Computar is a Kowa brand so I think anything with the Computar brand on it is made by Kowa.

How that relates to Hoya ELs I dunno.


PostPosted: Thu May 30, 2013 8:53 pm    Post subject: Reply with quote
Quote:
Computar is a Kowa brand so I think anything with the Computar brand on it is made by Kowa.


From my understanding, that's not true at all. The Computar enlarger lenses were manufactured by Kowa, but the name was not Kowa's. The rights of the Computar name were sold to Chugai International in the late 1970s.


PostPosted: Thu May 30, 2013 10:02 pm    Post subject: Reply with quote
All the large format Computars are Kowa. Have you seen Computar lenses that were not made by Kowa?


PostPosted: Thu May 30, 2013 11:06 pm    Post subject: Reply with quote
That does not mean that it was Kowa's brand, it means that Kowa was their manufacturer. I think a majority of the designs were actually calculated by Burleigh-Brooks in the U.S. for Computar.

Quote:
All the large format Computars are Kowa.


The Computar Symmetrigons were made by Chugai after the trademarked name was sold. Also pretty much all the CCTV lenses of the same name.


PostPosted: Fri May 31, 2013 4:41 pm    Post subject: Reply with quote
I'm sure I recall selling Komura branded enlarging lenses back in the 1970s/80s that looked very much like the one shown in this thread... not sure of that's any relevance, but there you are Very Happy


PostPosted: Fri May 31, 2013 5:01 pm    Post subject: Reply with quote
I have a Komuranon-S 3.5/50mm enlarger lens. It is, without a doubt, an older (not N) EL-Nikkor 2.8/50 with an aperture stop at 3.5 built in. Never seen a 2.8 version.
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