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Old 19th July 2017
Harold Gough Harold Gough is offline
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Three Printing-Nikkor 105mm Images

These were lurking deep in my image files. The context was the Printing-Nikkor (minimum aperture f11) on my Olympus EM-1 in 2014. They were shot in aperture priority, 1/60 second at f11, with twin TTL flash.[Edit] There was a x1.5 Kiron TC behind the lens [edit ends]

For reasons I don't recall, these were stored as TIFFs. I have ensured that they are sharp and removed any noise. At this stage anyway, they have not been cropped.

Harold





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Old 19th July 2017
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Beagletorque Beagletorque is offline
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Re: Three Printing-Nikkor 105mm Images

That lens has a sterling reputation, but the Oshiro appears to out perform it for high magnification?
I have a 105 bellows Nikkor, but it's not much good above 1:1 even if the resolving power is excellent.
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Old 19th July 2017
Harold Gough Harold Gough is offline
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Re: Three Printing-Nikkor 105mm Images

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Originally Posted by Beagletorque View Post
That lens has a sterling reputation, but the Oshiro appears to out perform it for high magnification?
I have a 105 bellows Nikkor, but it's not much good above 1:1 even if the resolving power is excellent.
It would be interesting to do comparisons. The Printing Nikkor 105 is not recommended for outside of 2:1 to 1:2 for its best performance. If I wanted the very best I would probably use the 150mm version which has double the range of excellent performance. Here is my first try-out of the 150mm:

http://www.fredmiranda.com/forum/topic/1387559/

We don't know for what magnification the Laowa/Oshiro has been optimised.

The Printing-Nikkors were made half a century ago and new lens materials and computer designs are going to challenge at some time. On the other hand, you get what you pay for. The P-N 150mm cost the modern equivalent of over $110,000.

Harold
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Re: Three Printing-Nikkor 105mm Images

Some of the old industrial Nikon lenses are incredible works of engineering. As they were usually buried inside equipment they have not been touched too often either. They seem to have a god like status especially in Japan, mostly due to the limited numbers that were made. As you said in your post the weight of them is testament to the quality, but makes them hard to hold up!
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Old 19th July 2017
Harold Gough Harold Gough is offline
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Re: Three Printing-Nikkor 105mm Images

I have been puzzling over these images from TIFFs. When I was using Photoshop 7, which did not recognise my Olympus RAW files, I used Olympus viewer to open them and convert them to TIFFS, which are more amenable to processing than JPEGs, and I would then resize and save the processed files as JPEGs.

Having found TIFFS, I assumed that they had been converted from ORFs but had not been processed. For reasons I cannot recall, this seems not to have been the case.

I have traced the original RAW files and processed them by my current methods.

The one thing which I conclude immediately is that the f16 resulting from the lens being set at f11, with a x1.5 TC behind it, still gives insufficient DOF.

Here are the images in pairs, with the version form a TIFF first and the one form a RAW files second. I have cropped the reworked images similarly, to make comparisons easier.

I apologise for the initial error.

The last two images seem to have been opened for different white balances.

Harold











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