7artisans 25mm f1.8 manual lens for E-Mount

About Lens

7artisans is an unaccustomed brand name among the lens makers of the world. I bought it about 55 USD in Aliexpress. Most of price tagged as about 55 to 80 USD to each different sellers, but actual real supply price known as under 50 USD from unofficial reliable source.

This lens is made for short flange back models – a.k.a mirrorless, and my choice was E-Mount. Whole material seems to made with Aluminium, focus and aperture ring rotates in very smooth, specially aperture ring not stepped as like formal lens.

Lens looks well matched with my NEX-5N black – I love so much, cold and hard feeling on my fingers, really smoothly rotating each control rings, what an excellent experience to me falling in memory of the past.

Depth of focus at F1.8 makes many blurred effect, and it occurs more when object closer than far. Lens minimal length of focus starts from 18cm from sensor, so most of shot should easier in door with 25mm wide degree.

Quality is much nice than I expected, specially each end side of lens, Little berrel distortion, little spatial distortion. This lens may really be a favor item when take shoots in Caf’e

Samples

         

Opinion

This lens gave me some fun to taking pictures today. Each time I need adjusting focus ring to object. Higher than average quality of result may gives many fun for amarture photographer. And recommend to using my MIOHDR app to better result.

Make your picture to bright ! MIOH(DR)

It was finally released beta build for Mac OS X (Tested with El Capitan and High Sierra) 64bit native application to my open source repository. You can download it here in totally free !

About MIOH

This program is an open source project as GPLv3. Everybody can use my prebuilt binary in totally free, but source code may open to use in commercial. Or make your own new program with my source codes, it should be avoid license, maybe 🙂

Make Image O’ HDR is based on 3 different algorithms to boost your image to has high dynamic range as we seeing everything on our eyes.

How to use ?

Here explains how could it be able enhancing my picture for better than before, as like Pro !

First at all, you may download latest version of application for your OS in here. MIOH now supporting two different OS, Windows 64 and Mac OS X 64. Specially Windows 64 binaries contained normal (SSE3 SIMD + OpenMP) and avx (AVX SIMD + OpenMP). Mac OS X not supporting OpenMP now because built in LLVM-GCC not able to use OpenMP.

When you had ran this application ( Mac OS X users may need open in CMD+click, or right mouse click with selecting Open in popup memu, then agree to open ), you can see just like this.

Don’t be worry, just drag your picture file to application or Open a file with icon that contins “+” as you can see. It may not hurts you !

 

MIOH supporting JPEG, PNG and windows-BMP formatted image now, Most of your picture may loaded to this application, and it will appeared what contains in file.

You can rotate your picture in each CW 90 or CCW 90 degrees by pressing Command(or Control) and left or right arrow key, or select rotating icon on toolbar. MIOH not automatically rotates your picture by reading EXiF meta information.

You can change each different filters ( Log mapping, Reinhard and eCLAHE ) with different parameters with get hint when your mouse pointer stay on each parameter input, and just click to a Check button to apply changes from your previous picture. It is easy way to get new picture with few clicks.

Okay, now you can save new picture with PNG formatted file, or copy to clipboard with Command(or Control) C. MIOH will copy processed picture to your clipboard to maximum long width or height of 2048px resized.

You can paste clipboard image to your own graphic editor, or any application.

Just download it and uses for your better picture! Make your picture to HDR now, it’s free.

 

References

MIOH(MIOHDR) used my open source libraries.