Reverseing rings (Page 2): Interesting. I don't think I'd remove the lens with camera power on.

Longshadow Loc: Audubon, PA, United States

BebuLamar wrote:

I don't know but this guy said you can set the canon ef lens at any aperture doing this
https://www.dpreview.com/forums/thread/4736709#:~:text=There%20is%20a%20trick%20in,set%20on%20that%20f%2Dsetting.

Interesting.
I don't think I'd remove the lens with camera power on.

JimH123 Loc: Morgan Hill, CA

Bohica wrote:

Years ago (50?) I used to use a ring to reverse my lens on the camera for macro. Going through some boxes in the closet I came across a couple. How different would it be using these rings on a DSLR

What camera are you using? There are adapters that connect to the camera via the lens mount, and have an extended cable that attaches to the lens mount on the lens, allowing the camera to control the aperture when the lens is mounted backwards.

OR

You buy an inexpensive manual lens which gives you manual control of the lens aperture. There are wonderful manual lenses available that work great for mounting backwards.

And then on the camera, use live view for focusing.

JimH123 Loc: Morgan Hill, CA

Longshadow wrote:

Interesting.
I don't think I'd remove the lens with camera power on.

It also does not work for all lens manufacturers.

Longshadow Loc: Audubon, PA, United States

JimH123 wrote:

It also does not work for all lens manufacturers.

I would not be surprised......

User ID

Longshadow wrote:

The reason for you saying that.......

Okaaaaay my friend. It means the chances are excellent that typical Hawgsterisms will shortly ensue and acoarst you must either just ignore them or accept them as entertainment. Period.

Longshadow Loc: Audubon, PA, United States

User ID wrote:

Okaaaaay my friend. It means the chances are excellent that typical Hawgsterisms will shortly ensue and acoarst you must either just ignore them or accept them as entertainment. Period.

That's Entertainment.

(That would make a great TV show....)

I love it when I ask a simple question and the responder goes off to Butte, Montana.

therwol Loc: USA

User ID wrote:

Youre just too fast. Go back and read the finished post. I accidentally sent it before it was complete. Or just take it here and now that you must never reverse any lens that lacks a manual f/stop ring. Period.

Some Hawgsters who cannot understand "Period" will surely have other "advice".
Dont take ANY advice from those parties. Never. Not now, and not ever. Especially ignore their links to products and videos.
PERIOD.

Not advice. Just a real world observation that only applies to what I have in front of me. If you don't have similar Nikon or other lenses, do your own research.

I have two Nikon lenses in front of me. On is a screw drive lens with an aperture ring. The other is an AF-S lens without an aperture ring. I can set any aperture I want on the first lens with the aperture ring. The aperture is closed to the smallest aperture with the AF-S off of the camera. (It opens up all the way when the lens is mounted normally.) So it appears that a Nikon lens with an aperture ring will work fine if it is reversed. You just have to figure out the metering. You could theoretically use an AF-S lens (No aperture ring) reversed if you will settle for taking pictures at the minimum aperture, and you'd also have to figure out the metering.

BebuLamar

therwol wrote:

Not advice. Just a real world observation that on... (show quote)

When you remove the G lens (you called it AF-S but the fact that it doesn't have the aperture ring it's a G lens) you can set the aperture buy moving the aperture level on the back of the lens. The problem is how to keep it there. Perhaps some tape or something.

therwol Loc: USA

BebuLamar wrote:

When you remove the G lens (you called it AF-S but the fact that it doesn't have the aperture ring it's a G lens) you can set the aperture buy moving the aperture level on the back of the lens. The problem is how to keep it there. Perhaps some tape or something.

The lever is calibrated in the camera to move the aperture ring to the desired f/stop, at least for lenses from AIs onward where the aperture lever is also standardized. How would you know what f/stop you're using by moving the lever on the lens? It would be very imprecise. Yes it's a G lens. The AF-S designates what kind of focusing motor is in the lens. There are a few AF-S lenses with an aperture ring. That's not the case with mine, and I have a few.

BebuLamar

therwol wrote:

The lever is calibrated in the camera to move the aperture ring to the desired f/stop, at least for lenses from AIs onward where the aperture lever is also standardized. How would you know what f/stop you're using by moving the lever on the lens? It would be very imprecise. Yes it's a G lens. The AF-S designates what kind of focusing motor is in the lens. There are a few AF-S lenses with an aperture ring. That's not the case with mine, and I have a few.

Well you just estimate and then the camera meter would be pretty accurate otherwise do shoot, chimp and adjust. However, the level on old pre AI and AI lenses are not linear so it's hard to estimate. But from the AI-S onward the level is linear to the amount of movement so it's not too hard to estimate.

Mark Sturtevant Loc: Grand Blanc, MI

A common thing is to just use an old manual lens (any brand) with a reversing ring that adapts to your modern camera body. That way you can just stop down the aperture when ready to shoot. I've used an old but very good manual Pentax lens on my Canon t5i that way.

Bill_de Loc: US

Bohica wrote:

Years ago (50?) I used to use a ring to reverse my lens on the camera for macro. Going through some boxes in the closet I came across a couple. How different would it be using these rings on a DSLR

I've used those rings on DSLR's. There are also adapters that go on the other end [the end that is away from the camera] that let you adjust the aperture.

This place has lens reversing rings and aperture control rings.

https://fotodioxpro.com/search?type=product&q=fotodiox+52mm+Aperture+control
---

dwmoar Loc: Oregon, Willamette Valley

therwol wrote:

You couldn't do it with lenses where the aperture is controlled by electronics only.

You indeed can on a Canon. It is even easier if you use something like this. This setup will set you back about $60.00

You can also set the aperture before reversing the lens by using the DOF button and then removing the lens. The aperture will then remain at what ever size was set when you pressed the DOF button and removed the lens. So yes it can be done with a fully electronic lens. It is just a pain to do it. The setup in the image is much easier to work with and all the EXif data remain intact.

Longshadow Loc: Audubon, PA, United States

dwmoar wrote:

You indeed can on a Canon. It is even easier if y... (show quote)

Cool!

dwmoar Loc: Oregon, Willamette Valley

Longshadow wrote:

What if I wanna ƒ/11?

If you were using a Canon you would set your aperture to f/11 and then press the DOF button, and while holding the DOF button your would remove the lens, and then turn off the camera. The lens now will be set to f11 and can be reversed mounted. If you want a different aperture you would have to go throuh that whole process again while choosing a different aperture size.