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Voigtlander 75mm f/1.9 Ultron Review

Fred Miranda
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p.5 #1 · p.5 #1 · Voigtlander 75mm f/1.9 Ultron Review

StanOPhoto wrote:
Nice review! What’s your hot take on this 75/1.9 vs CV 75/1.5?

At the moment, I do not have the CV 75/1.5 Nokton to make a direct comparison to the new Ultron. However, I have used the Voigt 75/1.5 Nokton for a couple of years, and in my opinion, they share more similarities than differences. When shooting wide open at f/1.5 and at the same distance, the Nokton produces more blur and has more pronounced spherical aberration, resulting in a lower contrast look. The Nokton does show a significant improvement at f/2, and both lenses perform well when stopped down. Their rendering is also quite similar starting at f/2, although I have a personal preference for the Ultron's draw.

I think that the Voigtlander 75/1.5 Nokton and the new Ultron perform similarly at f/2, but the Nokton is heavier, and some users may not appreciate its haptics. To achieve precise focus with either lens, a highly calibrated lens to rangefinder is essential, and this will have a more significant impact on IQ than the small difference between these two lenses.

Apr 03, 2023 at 03:39 PM

StanOPhoto
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p.5 #2 · p.5 #2 · Voigtlander 75mm f/1.9 Ultron Review

Fred Miranda wrote:
At the moment, I do not have the CV 75/1.5 Nokton to make a direct comparison to the new Ultron. However, I have used the Voigt 75/1.5 Nokton for a couple of years, and in my opinion, they share more similarities than differences. When shooting wide open at f/1.5 and at the same distance, the Nokton produces more blur and has more pronounced spherical aberration, resulting in a lower contrast look. The Nokton does show a significant improvement at f/2, and both lenses perform well when stopped down. Their rendering is also quite similar starting at f/2, although I...Show more →

Great, thanks for the detailed summary! Much appreciated.

Apr 03, 2023 at 06:05 PM

mark1958
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p.5 #3 · p.5 #3 · Voigtlander 75mm f/1.9 Ultron Review

25% in general or just on the 75mm lenses? My 28mm/2 ultron and 50mm/2 I just purchased are well centered.
highdesertmesa wrote:
Hopefully both copies are well-centered and aligned with the rangefinder. I've had about a 25% success rate lately with getting a perfect Voigtlander on the first try.

Apr 03, 2023 at 09:31 PM

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p.5 #4 · p.5 #4 · Voigtlander 75mm f/1.9 Ultron Review

mark1958 wrote:
25% in general or just on the 75mm lenses? My 28mm/2 ultron and 50mm/2 I just purchased are well centered.

In general for the lenses I’ve tried recently. That includes two 28 Ultron II in a row that were correctly focused at infinity at the hard stop but showed they hit infinity before the hard stop with the rangefinder. I just gave up since Popflash didn’t have another copy at the time.

I think I would amend the adage “never sell a Leica lens” to “never sell an M lens that works correctly because you might have trouble getting another good copy”

Apr 04, 2023 at 07:09 AM

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p.5 #5 · p.5 #5 · Voigtlander 75mm f/1.9 Ultron Review

I will check for this because I did my tests a bit before infinity.. Mark

highdesertmesa wrote:
In general for the lenses I’ve tried recently. That includes two 28 Ultron II in a row that were correctly focused at infinity at the hard stop but showed they hit infinity before the hard stop with the rangefinder. I just gave up since Popflash didn’t have another copy at the time.

I think I would amend the adage “never sell a Leica lens” to “never sell an M lens that works correctly because you might have trouble getting another good copy”

Apr 04, 2023 at 01:02 PM

astrobuoy
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p.5 #6 · p.5 #6 · Voigtlander 75mm f/1.9 Ultron Review

Just got my 75mm 1.9 this afternoon. Took some quick and dirty test shots in the apartment and out with the dog to make sure everything was good. My copy is definitely calibrated correctly, and I'm really pleased with the rendering! Excited to see how this looks on film. Going to be selling my 75mm 2.5 at some point for sure.

I took this at f/2 (or whatever the intermediate stop between 1.9 and 2.8 is... f/2.4?) on my M10-R with the 75/2 profile and no editing, just the Adobe Color profile. (Speaking of, what profile are folks using? Would the 75/1.5 lens profile be better suited?)

Apr 04, 2023 at 03:37 PM

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p.5 #7 · p.5 #7 · Voigtlander 75mm f/1.9 Ultron Review

astrobuoy wrote:
Just got my 75mm 1.9 this afternoon. Took some quick and dirty test shots in the apartment and out with the dog to make sure everything was good. My copy is definitely calibrated correctly, and I'm really pleased with the rendering! Excited to see how this looks on film. Going to be selling my 75mm 2.5 at some point for sure.

I took this at f/2 (or whatever the intermediate stop between 1.9 and 2.8 is... f/2.4?) on my M10-R with the 75/2 profile and no editing, just the Adobe Color profile. (Speaking of, what profile are folks using? Would...Show more →

I'm happy to hear that you received a well-calibrated copy! Please share some film shots taken with it when you have the chance.

The difference between f/1.9 and f/2.8 is more than a stop, precisely 1.32 stops. Therefore, the aperture value between f/1.9 and f/2.8 is approximately f/2.282 without rounding. This value is very close to f/2.4.

Apr 04, 2023 at 08:11 PM

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p.5 #8 · p.5 #8 · Voigtlander 75mm f/1.9 Ultron Review

Few images using the Fuji X-Pro3 + Voigtlander 75mm f/1.9 Ultron. (equiv. 112mm)

X-Pro3 75.0 mm lens 75mm f/1.0 1/1000s 320 ISO 0.0 EV

X-Pro3 75.0 mm lens 75mm f/1.0 1/90s 320 ISO -1.0 EV

X-Pro3 75.0 mm lens 75mm f/1.0 1/300s 320 ISO -1.0 EV

X-Pro3 75.0 mm lens 75mm f/1.0 1/280s 320 ISO -1.0 EV

Apr 05, 2023 at 08:53 PM

Fred Miranda
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p.5 #9 · p.5 #9 · Voigtlander 75mm f/1.9 Ultron Review

X-Pro3 (112mm equiv.)
All wide open.

X-Pro3 75.0 mm lens 75mm f/1.0 1/60s 1000 ISO 0.0 EV

X-Pro3 75.0 mm lens 75mm f/1.0 1/60s 3200 ISO 0.0 EV

X-Pro3 75.0 mm lens 75mm f/1.0 1/35s 6400 ISO -3.0 EV

Apr 07, 2023 at 12:12 PM

stockshas
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p.5 #10 · p.5 #10 · Voigtlander 75mm f/1.9 Ultron Review

Just received my lens and first impressions are mixed. I love how it renders but feel wide open it’s kinda soft. Will post some samples with better lighting conditions tomorrow to rule out bad lighting and/or user error. Really hope it’s just that as I don’t like trying multiple copies to get the perfect lens. The form factor and handling is really nice. First non Leica lens since the 28 CV before I gave it up - should have held on as it was a perfect copy.

Apr 07, 2023 at 05:42 PM

highdesertmesa
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p.5 #11 · p.5 #11 · Voigtlander 75mm f/1.9 Ultron Review

stockshas wrote:
Just received my lens and first impressions are mixed. I love how it renders but feel wide open it’s kinda soft. Will post some samples with better lighting conditions tomorrow to rule out bad lighting and/or user error. Really hope it’s just that as I don’t like trying multiple copies to get the perfect lens. The form factor and handling is really nice. First non Leica lens since the 28 CV before I gave it up - should have held on as it was a perfect copy.

What camera are you shooting it on? My copy was front focusing with the M11 rangefinder – It was impossible to get sharp results with it wide open using the rangefinder.

Apr 07, 2023 at 08:56 PM

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p.5 #12 · p.5 #12 · Voigtlander 75mm f/1.9 Ultron Review

M10P and SL2-S. Similar results on both. But I’ll know better shooting outside tomorrow.

Apr 07, 2023 at 09:01 PM

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p.5 #13 · p.5 #13 · Voigtlander 75mm f/1.9 Ultron Review

I did some quick comparisons with the 75mm/1.5 and 75mm/1.9 on an M11. At f2.0 and 1.9, respectively- the 75mm 1.5 is much sharper and more contrast. By f2.8 they are similar in sharpness but the former lens a bit more contrast. Did not have a chance to shoot in harsh light as it was overcast here today. The bokeh was slightly different and personally cannot say one was more pleasing than the other..

Apr 08, 2023 at 01:18 AM

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p.5 #14 · p.5 #14 · Voigtlander 75mm f/1.9 Ultron Review

if the lens is front focusing using prism (meant to say using the RF mirror) focus-- wouldn't all your lenses front focus? Do you see a difference using EVF focusing ?

highdesertmesa wrote:
What camera are you shooting it on? My copy was front focusing with the M11 rangefinder – It was impossible to get sharp results with it wide open using the rangefinder.

Edited on Apr 09, 2023 at 12:06 AM · View previous versions

Apr 08, 2023 at 07:36 PM

highdesertmesa
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p.5 #15 · p.5 #15 · Voigtlander 75mm f/1.9 Ultron Review

mark1958 wrote:
if the lens is front focusing using prism focus-- wouldn't all your lenses front focus? Do you see a difference using EVF focusing ?

Prism? The rangefinder on my M11 is correct wide open with multiple other M lenses. My first copy of the 75 1.9 focused perfectly with the rangefinder wide open, even after it rolled off a table and onto a tile floor. Sold that one as-is to another forum member. My second copy of the 75 1.9 lens was not correctly adjusted to focus at f/1.9 with the rangefinder – and yes, switching to live view would allow me to adjust focus so it was sharp.

The rangefinder mechanism and the lens itself can be adjusted independently. Both need to be set to correct specs for focus to be achieved wide open.

Apr 08, 2023 at 08:59 PM

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p.5 #16 · p.5 #16 · Voigtlander 75mm f/1.9 Ultron Review

I am sorry Prism was the wrong word. What I mean-- the light coming into the rangefinder focus mirror mechanism is separate from the sensor. So if the light from the lens comes through the viewfinder --how would only a single lens mis-focus? I would think if one lens mis-focuses, the others would as well. I am just asking because i really do not know.

Apr 08, 2023 at 09:25 PM

freaklikeme
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p.5 #17 · p.5 #17 · Voigtlander 75mm f/1.9 Ultron Review

mark1958 wrote:
I am sorry Prism was the wrong word. What I mean-- the light coming into the rangefinder focus mirror mechanism is separate from the sensor. So if the light from the lens comes through the viewfinder --how would only a single lens mis-focus? I would think if one lens mis-focuses, the others would as well. I am just asking because i really do not know.

Here's a short video explaining how an RF mechanism works.

How one lens can misfocus while others work will depend on different factors. If the mechanical linkage on the lens isn't well-calibrated to the camera, the RF patch in the viewfinder will show you it is focused correctly while the light projected on the image capture plane is out of focus. Alternately (or additionally) the camera's linkage might be out of calibration so slightly that it doesn't impact lenses with shorter focal lengths and/or slower possible shooting apertures, where the greater depth of focus of the mounted lens means you won't necessarily see a precise focusing error in the results. And then there's a question of lens design and focus shift when stopping down the aperture. You could actually have two copies of the same lens, the ZM Sonnar 50/1.5, for example, that are calibrated for precise distance based focus at two different aperture settings, one wide open and the other at f/2.8, so you have to learn to compensate your focus for the desired aperture setting depending on that calibration.

I hope that helps.

Apr 08, 2023 at 11:53 PM

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p.5 #18 · p.5 #18 · Voigtlander 75mm f/1.9 Ultron Review

HI Yes this was a nice video and explains the RF mechanism.. Thanks for posting it. But it still does not explain how you have two copies of the same lens and at the same aperture one is properly focusing and the other is not. If one lens was ever so slightly mis aligned-- seems like it would still be compensated for by small adjustments to the focusing ring -- which would be slightly different from lens 1 and 2?

freaklikeme wrote:
Here's a short video explaining how an RF mechanism works.

Apr 09, 2023 at 12:04 AM

freaklikeme
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p.5 #19 · p.5 #19 · Voigtlander 75mm f/1.9 Ultron Review

mark1958 wrote:
HI Yes this was a nice video and explains the RF mechanism.. Thanks for posting it. But it still does not explain how you have two copies of the same lens and at the same aperture one is properly focusing and the other is not. If one lens was ever so slightly mis aligned-- seems like it would still be compensated for by small adjustments to the focusing ring -- which would be slightly different from lens 1 and 2?

You can compensate for the variation if you know it's there, but how would you if you're depending on what you're seeing from the RF patch in the viewfinder? Since it works based entirely on distance, if the lens isn't calibrated to move the RF mechanism to the correct distance, it won't properly reflect when the light projected on the image plane has the desired focus.

Apr 09, 2023 at 12:27 AM

ReleaseDrive
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p.5 #20 · p.5 #20 · Voigtlander 75mm f/1.9 Ultron Review

Odd B&H doesn't have this lens listed. Was going to trade in some stuff for one, so I'm hoping it's temporary.

Apr 10, 2023 at 08:50 PM

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