Attaching Nikon fit macro lens to M4/3?

[snerkler]

If I attached my Sigma 105mm Macro Nikon fit lens to my olly M4/3 would it still have the same working distance (approx 30cm) and therefore act as a 210mm lens and get me closer to the subject (and therefore greater than 1:1 magnification), or would it increase the working distance and maintain a 1:1 magnification?

If I bought a cheap adapter without electronic communication how would I set the aperture of the lens?

Cheers.

 

[G.K.Jnr.]

It'll still give you 1-1 Sir, as for setting the aperture I cannot help you with.

"I'm assuming everything would be similar to me using my 105mm Micro Nikkor (D) lens on my Fuji-X system, in which that still gives me 1-1 but of coarse I can stop the aperture down manually it being a (D) lens"

George.

 

[woof woof]

That's a good question and if it helps at all...

I use an old film era Sigma 50mm f2.8 in Minolta fit and it gives 1:1. I tested this by photographing a ruler at the closest it would focus with it on my MFT Panasonic G1 and it ended up giving me the diameter of the sensor, or there abouts as close as I could see

So, if the lens gives 1:1 I think that's all you get no matter what you fit it too. Unless someone else knows better and can explain why what happened happened with my Sigma and MFT G1.

 

[snerkler]

It'll still give you 1-1 Sir, as for setting the aperture I cannot help you with.

"I'm assuming everything would be similar to me using my 105mm Micro Nikkor (D) lens on my Fuji-X system, in which that still gives me 1-1 but of coarse I can stop the aperture down manually it being a (D) lens"

George.

That's a good question and if it helps at all...

I use an old film era Sigma 50mm f2.8 in Minolta fit and it gives 1:1. I tested this by photographing a ruler at the closest it would focus with it on my MFT Panasonic G1 and it ended up giving me the diameter of the sensor, or there abouts as close as I could see

So, if the lens gives 1:1 I think that's all you get no matter what you fit it too. Unless someone else knows better and can explain why what happened happened with my Sigma and MFT G1.

Thanks guys. That's interesting, I can only assume that the working distance alters then otherwise you'd surely end up with a closer image due to the crop factor, unless there's some other physics at play that I'm not aware of? I guess if that's the case you will get an advantage of a larger DOF.

 

[Eloise]

Thanks guys. That's interesting, I can only assume that the working distance alters then otherwise you'd surely end up with a closer image due to the crop factor, unless there's some other physics at play that I'm not aware of? I guess if that's the case you will get an advantage of a larger DOF.

It's still 1:1 snerlker as in a 1cm diameter object will be 1cm on the sensor. But of course that takes up much more of a m4/3 sensor than it does of a FX sensor. (A m43 sensor is something like 13mm high so a 1cm object at 1:1 will take most of the frame height vs FX being 24mm high so at 1:1 the same object would be around half)

 

[snerkler]

It's still 1:1 snerlker as in a 1cm diameter object will be 1cm on the sensor. But of course that takes up much more of a m4/3 sensor than it does of a FX sensor. (A m43 sensor is something like 13mm high so a 1cm object at 1:1 will take most of the frame height vs FX being 24mm high so at 1:1 the same object would be around half)

Ahh, that makes sense thanks. So it will fill the frame more giving the effect that you're closer

 

[woof woof]

I don't tend to shoot macro as such but rather just close up shots of flowers, leaves and other interesting stuff and therefore the advantage for me is I get 100mm perspective from a 50mm lens. I prefer the longer perspective for that sort of picture. I'd imagine that for bugs and creepy crawlies and stuff like that the greater shooting distance would be the advantage.

 

[HoppyUK]

It's still 1:1 snerlker as in a 1cm diameter object will be 1cm on the sensor. But of course that takes up much more of a m4/3 sensor than it does of a FX sensor. (A m43 sensor is something like 13mm high so a 1cm object at 1:1 will take most of the frame height vs FX being 24mm high so at 1:1 the same object would be around half)

Yes.

Ahh, that makes sense thanks. So it will fill the frame more giving the effect that you're closer

It's just the crop factor at work, same as any other lens. What you would get is an image that's identical to your full-frame Nikon D750, if you cropped that down to 25% of the frame area. Exposure the same, 1:1 distance the same, DoF the same - just less pixels over the subject. Or you could use it as WW has suggested, and get a frame filling image from double the shooting distance.

Adjusting the aperture is difficult, though there are Nikon adapters with a manual aperture control lever.