Brian

Spring 2024 by fiftyonepointsix, on Flickr

1936 Carl Zeiss Jena 5cm F1.5, wide-open, Orange filter on the M Monochrom.

This is with my Nikon Z5 and 1960s Canon 50mm F0.95 wide-open, ISO 6400. This is not even the latest FX Technology sensor.

Skating Rink by fiftyonepointsix, on Flickr

$1000 for the camera, the lens now sells for double that. 

Big pixels can gather more light, and a huge gain has come from defeating noise in the camera. 

Fastest film I ever shot was ISO 1600.

This is Pushed High Speed Ektachrome, digitized with an Olympus u43 camera.

Elvis, 1976 Capital Center by fiftyonepointsix, on Flickr

Wish I had my Nikon Df or Z5 back in those days. Elvis would have looked better.

Fine use for an unusual, special purpose lens. 

You know you are a Nikon-a-holic when you buy special purpose lenses and use them for regular photography.

I need to find the Bellows for the 105/4 short mount Nikkor...

Lupe,

That lens is on good hands.

 

 

I used this amazing bizarre macro PC .. Lens that I bought before and received 25th March.

Nikon 85 mm f/2.8 PC Micro-Nikkor
http://www.naturfoto...5ts_review.html

 

Note: All shots I use monochrome B&W Nikon D5 config, customized by myself.

I use always a 85A Amber filter 77mm from Hoya

 

I can focus the 7Artisans 75/1.25 without problem, but it is also a limit for me. I think the 85/1.2 used wide open would be too difficult for me to manually focus on a moving subject. I had a Canon 85/1.5 Leica mount lens, could focus it. But sold it for 7x what I paid for it... SO- at $400, the 90/1.5 was the logical choice.

https://www.bhphotov...f_1_5_lens.html

It is in Z-Mount. Mine is RF coupled, and I have managed to use it on the RF as well.

Nikon Z5 with the 90mm F1.5 Mitakon, wide-open using an M-Mount to Z-Mount adapter.

This camera is amazing. Focus peaking used, no time for magnified view. Latency is low- got my Daughter with all wheels off the ground.

This lens is my Limit for manual focusing moving subjects. Very little DOF used wide-open.

A quick Ebay scan shows low-shutter count D5 bodies at under $2K, and low-shutter count D4 at about $1K. 

How much do you want to spend?

The D4 is going for less than the Df. I bought the Df first day it was available in camera shops.

As Lupe point out, you must select the lens and then press "DONE" for the setting to take effect. This last step is easy to forget, I did and the 55/1.2 was showing up at "F4.5". I had scrolled through the choices, got to the 55/1.2- but forgot to hit "Done". Then remembered that last step.

Crop factor has nothing to do with indicated F-Stop.

I just put the 55/1.2 Ai on my Nikon Df, used the non-CPU lens selection and set to 55mm F1.2. The Electronic Aperture readout follows the aperture ring all the way from F1.2 through F16, the entire range.

Manual Focus Ai series lens on my Nikon Df- works just as described, as it should. 

Make sure you are using the non-CPU lens in the Menu setup, and set to the correct Maximum F-Stop. If you are still not getting agreement, then the Ai notch is off.

LaBikina is correct, F-Stop does not change based on sensor size.

I do have one Nikon DSLR, the Nikon E3 from 1997. That camera uses reduction optics built into the camera body, and the F-Stop is affected. The same is true of my Nikon Speed-Magny Back for the Nikon F, uses Polaroid peel-apart film. The back has a relay lens in it, and aperture is affected. It takes the 35mm image and spreads it out to the Polaroid 3"x4" format. Same effect as using a Tele-Converter.

https://imgbb.com/

I use imgbb for image hosting, generates the BB code that is used here.

This is for "Full Image Linked", gives a smaller image with a link back to full-size. My Factory Ai'd Nikkor-SC 50mm F1.4, on the F3AF body and HP finder. I have the DX-1, do not use it. Forty years old.

Free.

Exposure should be Okay- even if the F-stop is coming up incorrectly. The Auto-Index function is "relative" for the meter operating at maximum aperture. The camera measures light coming in, then the Ai ring is used to indicate how many stops down from Maximum Aperture the lens is set. With the FM, actual F-Stop is indicated using the prism and read off the secondary scale.

The crop factor on the sensor should make no difference on the F-Stop, assuming no vignetting. A change in F-Stop occurs if you use an optical 1.4x Teleconverter on the lens, such as the TC-14. The latter- the teleconverter essentially spreads the light from the central portion of the image formed by the lens to a larger area on the film or sensor.

The F-Stop should be the same for a full-frame camera as it is on the DX format camera. Something else is going on. There may be some error in the AI index that you made, caught by the D7100. The last DX format Nikon I bought was the D1x, and have the D1. These give the same F-Stop used with my Ai lenses as my Full-Frame Df.

To add: with the DX sensor, you will get less light drop-off at the corners due to vignetting of the lens. The overall brightness of the frame with the lens used at widest aperture is greater on the DX frame as compared with a full-frame FX camera. Most lenses have a 1-stop to 2-stop falloff at the extreme edges.

Measurement of vignetting of a 50mm f1.1 Nokton on a Leica, showing light fall-off as you step away from the center of the sensor.

The Asymmetric line at F4 is due to the actual shape of the aperture.

Spring has Sprung in Virginia, and it's warm enough to take the M Monochrom for a walk.

A 1934 Carl Zeiss Jena 5cm F1.5 Sonnar, converted to Leica mount. Wide-open, Yellow filter.

My own processing to add a Gamma curve, convert to 16-bit pixels from 14-bit, and output a new DNG file.

I think of it like a Fortran program that does Polycontrast RC paper.

Obviously a great lens that is also a treasured find for a collector.

"Freak Junk for Collectors" that sequence of words should never be uttered! Your whole collection may disappear. It's known to be an evil spell. All your treasures go to the person that posts just after you type it.

And Boom.

Cambridge Camera was so bad that Pop Photo dropped them.

Nikkor35F25_2 by fiftyonepointsix, on Flickr

I use filters on my Nikkor -and other- lenses.