I tried it with a pentax dfa 24-70/2.8 andit works. It is an adapter to use pentax lenses on four thirds.

I know canon has an adapter like that.

I sometimes reverse a 24mm reversed on a 100mm. The these electronic pass trough wil not help.

I just discovered a trick to control the diaframa on a reversed digital lens.

If you use a mount adapter with a lever to control the F-stop you can use this on the bayonet of a reversed lens.


Link for an pentax K example

this Time FF, K1 with F 100/2,8 macro in combination with the Canon 500D closeup lens.

Not exactly studio nor nature. I call it my outdoor studio.
Working in my greenhouse gives fine light (chalk shading)

110 frames. Gx80 + Olympus 60 macro and 26 extension tubes.

The mite was alive, i was lucky it did not move too much.

Guido, thanks for the information about your Pentax pixel-shift speeds. Can I ask what card you are using?

Scandisk ultra SDHC I
80 mb/s

Another thing to watch out is to use both your memory cards together. I slows the processing down.

Does the S1R allows focus bracketing?

Pixel shift is a lot faster on my k1. ONm the Pentax k1 it is about 16-17s though it depends on the card speed. That's 4-image pixel shifting, which does not change the pixel dimensions, though it does eliminate the significant loss of resolution due to the Bayer filters. I just tried it: All toghe...

Pixel shift is a lot faster on my k1.

Have to check that.

Perfect!

The people chasing insects in nature mostly perform not very good with full frame. Mostly resulting in very strong crop's. My forum/web results are better with four thirds then with my FF. The DOF of FF is extreem small. If you do early morning stacks the situation changes. Sure if you work in a tec...

This time with my Pentax K1 and the sigma 180/3,5 macro.

A short DOF thats for sure.

Another sniper rule that wil help is: "squeeze the trigger not pulling/pushing"

In dutch it is called a "blind bee"

Top shots but a tiny bit to much flash light.