Ungeekiness.: Industar-50-2 50mm f/3.5 lens sample photos without pp.

Industar-50-2 50mm f/3.5 lens technical details:

type: Prime lens
mount type: M39, M42
optical design: 4 elements in 3 groups
aperture range: f/3.5~f/16, clickless
aperture blade: 6~8
minimum focus: 65 cm
filter thread size: 33.5mm, 35.5mm (rotating)
weight: 68g, 75g
length: 30mm

The Industar-50-2 50 mm f/ 3.5 (Russian: "Индустар") is a standard lens in Zenit (Зенит) camera.
And there was a version of Zorkiy (Зоркий) rangefinder camera.
FED Industar-10 50mm f/3.5 was copy(design was borrowed) from Leitz(Leica) Elmar lens--same collapsible style.
And Industar-50-2 was copy from(based on?) Tessar 50mm f/3.5's optical scheme.

I don't much care about this technical details of lens. But sometimes it can be useful.
For example, if I already have same uv filter or hood like this lens, I can use with this lens.
And I'm walking long hours when I do photo-walks. So if lens wasn't heavy, it was very suitable for me. That is the reason that I mostly shoot with prime lens.
So I do check those things from the technical details.

You can read more about the lens from here:

Here is photo of Industar-50-2 50mm f/3.5 lens with cameras:

Industar-50-2 50mm f/3.5 lens on Sony A7

Industar-50-2 50mm f/3.5 lens on Sony Nex-5R

Photos of the lens that I used.

Industar-50-2 50mm f3.5 lens

This lens is very small so m42 lens to Nex(E mount) adapter is bigger like this:

Industar-50-2 50mm f/3.5 lens on m42 to nex adapter

Technical notes:

These photos were all taken with handheld and I used M42 lens to Sony E mount or Micro four thirds adapter so I have no idea about aperture number for the photo.

When I am taking photos, I do use Raw file format. So I need to convert raw file to jpg file and during that time, I do some post-processing--this is kind of darkroom process in developing film.
And when I do this, I don't use any default setting from Rawtherapee--open source software because there has some image modification settings like sharpening, micro-contrast and among other things.
I don't use Adobe Photoshop but this also has same kind of default setting with sharpening.
This isn't important for photography. But this is about the lens--what kind of photo I can take with this lens. So sharpening won't help to know about the lens.

So when I do use Rawtherapee, I removed all the default setting.
I will do these adajustments, if necessary:
- click the auto button in exposure tab--automatically calculate the exposure value,
- adjust exposure value, if overall image was still dark or too bright,
- adjust contrast(between 3 and 18) in L*a*b* adjustments tab,
- if there have some areas were too dark or too bright which makes me feel unbalance the overall look, adjust the shadow/highlight value.
- Sometimes, white balance set to auto or slightly reduce the temperature value. Because Sony A7's white balance value was quite terrible when I do use other brand lens--not Sony E mount lens.

Old lens probably need increase contrast value:
This is very old lens--made since 1959. So my copy was very likely 1960's.

When I took the photo with this lens, scene looks quite smog-ish style. But after increased contrast, everything looks good.
This is quite common thing for old lens--I have many old lenses and most of them were like this. And it can easily fix.

Example photo:
ISO 1250 so I did use Imaging Edge software to post process - only increased exposure value to 0.5 ev and then white balance in 'auto'.
As you can see, color wasn't that strong.