DSLR scanning with manual focus lens - what shutter speed?

Just getting to grips with my first conversion - LR is new to me too, so it’s quite a challenge. The biggest headache so far is what shutter speed to choose for the scans. Here’s my set up:

  • Nikon D5600 DSLR
  • Nikon Micro-Nikkor 55mm f/2.8 macro lens (manual focus) - focusing fully zoomed in on the tilting rear screen of the D5600 is great. Aperture is set on the lens, not the camera
  • iPad Pro using SnapBridge to remotely control the scanning (you can’t focus using it, but you can set the shutter speed and a few other things)
  • Valoi Easy35 scanning system
  • LR & NLP on a Mac

The lens is amazing, but as an AI-S manual focus model, it only registers on the camera when you’re in full manual mode. I therefore can’t benefit from aperture priority mode to determine the DSLR’s shutter speed. My issue is therefore what shutter speed to set the DSLR to?

Other info:
I set the ISO to the camera’s native ISO @ 100 (as per Valoi’s instructions).
I dial in +1 over exposure on the camera (as per Valoi’s instructions).
I scanned at both f/8 and f/5.6 (with a f/2.8 lens)

The first test (a strip of 5 negs) I scanned at 1/30, 1/40, 1/50, 1/60, 1/80, 1/100, 1/125 (which is the range Valoi suggested would normally be ok), plus 1/160, 1/200, and 1/250. Yes, I am a glutton for punishment - that’s 20 scans per neg!

The second pass (the whole roll), I ‘restricted’ it to ‘just’ 1/30, 1/50, 1/80 and 1/125 but at both f/8 and f/5.6. So that’s ‘just’ 8 scans per neg, around 270 scans for the whole roll.

I wish I’d read forward about the edge buffer thing, as I spent hours today cropping, but that wouldn’t have helped me with wonky horizons, so I guess it was time well spent …

Here’s the first scan, shot 2 January this year, F2A, Ilford HP5+, reasonably (and rare) bright day. Can’t remember the SLR settings. Scanned at f/8, 1/30.

So, how can I cut this bracketing down further?
Can I standardise on just a single shutter speed and aperture combination?
Will this be valid for all films? All of one type of film stock? All shot with similar lighting conditions? How can I streamline the workflow to make it less painful.

Your suggestions would be very gratefully received.
Thanks,

Andrew
Cornwall, UK
Main format: 35mm
Favourite camera: Nikon F2A
Favourite lens: Zoom-Nikkor 35-70 f/3.5
Next challenge: scanning Minox negs!

Welcome to the forum @BeardyLong

  1. Can I standardise on just a single shutter speed and aperture combination?
  2. Will this be valid for all films? All of one type of film stock?
  3. All shot with similar lighting conditions?

A1: Yes, you can standardise exposure. Capture unexposed film (beginning or end) and expose to the right. Capture all negatives of the film with this setting.
A2: Technically yes, but for optimal results, set exposure as outlined above - per film.
A3: Yes (for the captures on film) and yes (for the captures from film)

If you get into colour negatives, make sure to capture all negatives with the same settings. This is a prerequisite for successful “roll analysis”.

Check out the user guide. You might find some more “hows” and “whys”.