1930s Meyer Trioplan on a Pentax K1

I recently acquired a Meyer Gorlitz f4.5 105mm Trioplan in a Pronto shutter. Other than being a bit dirty everything works perfectly.
I cleaned the glass and made a new mount for it so that it could be used on M42 extension tubes. Adding a 10mm focusing helicoid
provided a very versatile piece of kit.
It doesn't make Trioplan 'bubbles' like the later 1950s and 60s 100mm versions but I was quite stunned by the image quality in general.
There is very little noise, next to no CA and its resolving capability is phenomenal. The images are from its first use yesterday and I
have attempted to include a variety of situations. The weather was clear and dull. .....

1. 'Close up' (about 6feet away) and wide open



2. Into the shadier part of the tree nursery



3. And up into the light. Unshaded, the image is very hazy. Shade the lens with a table mat (long and flat) then it copes just fine. Note the lack of CA.



4. The full frame, looking at a distant neighbour's first floor flat.



5. 100% crop from it



6. And from the tree to the left of the flat



I'm really impressed with this bit of vintage Hugo Meyer. All with a K1 on a tripod and IR release. ISO 200 and, other than #1, taken
at around f8. Images processed with Faststone Image Viewer. And what did I pay for it? ............. £39.

Nice write-up and test shots. I‘ve seen a few of those advertised here in Germany and wondered what they‘re about. The colours in No. 2 really pop for me.

I‘d be really interested in seeing some pictures of the mount and how you adapted it if you have the time and inclination to share!

Same for me. It seems to be a very interesting piece od glass.

Wow, David - take great care using that lens as you might cut yourself, it's so sharp !
Fantastic shots for dull weather light.

Did I hear someone say you can't use old glass on digital cameras ???

Best regards
Peter

Having spent quite a bit of time looking at these super sharp shots, I have reached a decision, I am placing all my lenses in a box and hiding them away.
I will go back to drawing things instead. And sulk as well. So there.

There's a whole section of Vintage Lens Reviews I have been doing for ePHOTOzine: https://www.ephotozine.com/reviews/vintage-lenses-133 including a few Pentax ones.

If anyone has anything interesting they'd be prepared to loan then I'd be happy to review it. As these are only done as time allows, please PM me first so we can discuss it.