ULTRON 27mm F2 X-mount INSTRUCTION MANUAL he says
"This product is intended to be used with the X-mount camera body.
Please note that using it with teleconverters, mount adapters, macro adapters, and other accessories, may cause problems."
Wich problems?
Can I use MCEX-11without causing damage to the camera or lens?
Thanks
ficifolia wrote:
ULTRON 27mm F2 X-mount INSTRUCTION MANUAL he says
"This product is intended to be used with the X-mount camera body.
Please note that using it with teleconverters, mount adapters, macro adapters, and other accessories, may cause problems."
Wich problems?
Can I use MCEX-11without causing damage to the camera or lens?
Thanks
While I haven't tried the MCEX-11 with it yet, I'm pretty sure it'll function smoothly. The mention from Cosina is probably because they only tested it with the cameras they listed as compatible, without trying other combinations.
I recently bought an XF 27mm f/2.8 R WR lens to compare it with the CV 27/2 Ultron. Today, I did a quick resolution and contrast test, but the lighting conditions were changing rapidly, which affected the consistency across all frames. I plan to redo the test when the weather is more stable and share the results here.
Initially, I found that both lenses performed very similarly from the center to the corners when using comparable apertures.
Infinity performance: Voigtlander 27mm f/2 Ultron vs Fujifilm XF 27mm f/2.8 R WR
I previously compared the Voigtlander 27mm f/2 Ultron to the larger and optically superior Fujifilm 23mm f/2 R WR for resolution and contrast. The Fuji 23/2R WR demonstrated superior resolution and contrast, especially away from the center of the frame. To be fair to Cosina, I am now comparing the CV 27/2 Ultron to another similarly compact "pancake" lens, the XF 27/2 R WR. Both lenses offer a compact 27mm option for the Fujifilm system, with the Voigtlander being one stop faster while the Fuji has autofocus capability. However, it's impressive that Cosina was able to develop a high-performance lens that's slightly smaller than the Fuji lens while offering an additional stop of light-gathering capability, which is significant.
In the resolution and contrast results, both lenses show similar performance across the frame at any aperture. The only notable difference is that at f/2.8, the Fuji lens performs slightly better, displaying less astigmatism in the extreme corners. However, it's important to note that differences in manufacturing tolerances could potentially have a more significant impact than the minor variations observed in this comparison. Overall, both lenses are well-centered and serve as excellent examples of their respective models.
Here is the full image thumbnail showing the area demonstrated at 1:1 magnification.
Distance: Infinity
Camera: FUJIFILM X-PRO3
Focus: Center - Best of three @ 12.4x magnification
WB: Daylight
Lens centered using my decentering test. My Voigtlander Voigtlander 27mm f/2 Ultron copy is perfectly centered.
Software: Lightroom with my default landscape sharpening. All other settings set to default
PS: Vignetting and distortion were NOT corrected. All in-camera corrections turned 'off'.
___________
Center Resolution and Contrast: Voigtlander 27mm f/2 Ultron vs Fuji 27mm f/2.8 R WR
At f/2.8, both lenses exhibit similar performance, which is noteworthy considering this aperture is wide open for the Fuji lens.
In addition to providing autofocus, another benefit of shooting with the Fuji XF 27/2.8 R WR (compared to the Voigtlander) is the ability to utilize Lens Modulation Optimizer (LMO), a feature available for Fujifilm lenses.
LMO appears to only impact raw files (.RAF), but based on my testing, it essentially enhances sharpness across the image field to mitigate diffraction effects. With the XF 27/2.8 lens, there's no difference when shooting wide open or one stop down (at f/2.8 and f/4), but starting at f/5.6, there's a clear improvement in sharpness across the entire field.
It's a great choice for photographers who shoot in JPG or convert RAF files to JPG either in-camera or using Fuji X Studio during post-processing.
Fred Miranda wrote:
@yukosteel@ recently shared a disassembly article about the Voigtlander 27mm f/2 Ultron X-mount.
Having read the 18mm disassembly article about how easily dust can get into that lens and @yukosteel@'s recommendation of a filter, I was wondering how others are approaching this or if they're not too concerned? Obviously some dust is inevitable regardless but I'm guessing that keeping the lens hood on then periodically clearing out any debris should mitigate it a fair bit?
I could see that something subtle like a 1/8 Glimmerglass might work well enough with the Voigtlander character when more or less permanently attached.
Currently waiting on mine to arrive, at which point I guess I'll find out how much I like the manual lens experience on my new (!) X-Pro2! It's a shame the communication doesn't work on that because it feels like it should be a very natural home for these Voigtlanders.
First post here by the way, thanks very much for the incredibly useful reviews of these lenses. It's great to know that the 27mm f2.8 WR doesn't lose out too much since I might end up falling back to that in the end, in fact I'll probably end up grabbing one at some point anyway for a bit more peace of mind in rougher weather.
I've 3D-printed a glass adapter that fits inside the CV 18 and 27's hood. What I did was remove the glass from a B+W UV filter and place it under this adapter. This allows the glass to fit snugly between the hood and lens without any wiggle. It keeps the lens as compact as possible while accommodating a high-quality filter. I can post the 3D print file if anyone is interested.
Mummdad wrote:
Having read the 18mm disassembly article about how easily dust can get into that lens and @yukosteel@@'s recommendation of a filter, I was wondering how others are approaching this or if they're not too concerned? Obviously some dust is inevitable regardless but I'm guessing that keeping the lens hood on then periodically clearing out any debris should mitigate it a fair bit?
I could see that something subtle like a 1/8 Glimmerglass might work well enough with the Voigtlander character when more or less permanently attached.
Currently waiting on mine to arrive, at which point I guess I'll find out how much I like the manual lens experience on my new (!) X-Pro2! It's a shame the communication doesn't work on that because it feels like it should be a very natural home for these Voigtlanders.
First post here by the way, thanks very much for the incredibly useful reviews of these lenses. It's great to know that the 27mm f2.8 WR doesn't lose out too much since I might end up falling back to that in the end, in fact I'll probably end up grabbing one at some point anyway for a bit more peace of mind in rougher weather....Show more →
Cool ideas, I did think the design might lend itself to DIY solutions. I don't have a 3D printer myself but I could send the file somewhere to be made if you don't mind posting it please?
As it happens, a place in the UK is doing Marumi stuff half price at the moment so I ordered a couple of their Exus Solid protectors which are apparently comparable to B+W, at least as far as the glass and coatings go. Obviously I ordered a couple because the 18mm is looking very likely now, I can already tell I'm going to enjoy going manual.
I think I'm going to need some sort of extra solution because I've found the mini hood cover surprisingly difficult to remove without fumbling it. I did try a film canister top in there as I saw that mentioned as a possibility but it won't quite fit, at least the T-Max 400 one I have to hand. Having a filter in there means the hood can just stay open whilst out with the camera.
Fred Miranda wrote:
I've 3D-printed a glass adapter that fits inside the CV 18 and 27's hood. What I did was remove the glass from a B+W UV filter and place it under this adapter. This allows the glass to fit snugly between the hood and lens without any wiggle. It keeps the lens as compact as possible while accommodating a high-quality filter. I can post the 3D print file if anyone is interested.
---------------------------------------------
rsrsrs wrote:
i did the same with a littl O ring seal which i put between the hood and Filter.
This sounds useful, I took my filters off of the 27 and 18 because I didn't like the extra thickness they added. Got any pics of how it looks and was this glass from a 43mm filter then?
This sounds useful, I took my filters off of the 27 and 18 because I didn't like the extra thickness they added. Got any pics of how it looks and was this glass from a 43mm filter then?
Yes, it's quite amazing. It's like having a high-quality built-in UV filter while using only the supplied hood. I will take some pictures of the setup tomorrow.
Here are some images showing the filter adapter for the Voigtlander 18mm f/2.8 and CV 27mm f/2 Ultron lenses. You can remove the filter from either a B+W UV filter, 39mm or 43mm. Surprisingly, they have the exact same size glass!
Fred Miranda wrote:
Here are some images showing the filter adapter for the Voigtlander 18mm f/2.8 and CV 27mm f/2 Ultron lenses. You can remove the filter from either a B+W UV filter, 39mm or 43mm. Surprisingly, they have the exact same size glass!
That is really cool! I can't tell that its even in there...at least from the angle of that pic. This is the perfect solution to keeping that nice slim profile of these little CV lenses. I don't have a 3D printer but I know plenty of print shops here so thanks for the file, I'm gonna do this.
BTW, so it sits in there snug right...no rattling or anything once its set in there? Also not that it matters much to me honestly but will the lens cap still screw in properly?
Gabe13 wrote:
That is really cool! I can't tell that its even in there...at least from the angle of that pic. This is the perfect solution to keeping that nice slim profile of these little CV lenses. I don't have a 3D printer but I know plenty of print shops here so thanks for the file, I'm gonna do this.
BTW, so it sits in there snug right...no rattling or anything once its set in there? Also not that it matters much to me honestly but will the lens cap still screw in properly?
Yes, once installed and the hood screwed in, nothing moves. The best part is that it stays parallel to the lens elements.
Thanks for sharing, Fred! It's extremely useful discovery that B+W 39mm and 43mm filter have same glass. I have few B+W Nano filters with "Clear" coating, and "UV" coating. Knowing the glass diameter is same, now I can switch it into other diameter frame when needed! : )
Love the minimalistic look with 3D printed adapter, great job done! As Gabe13 mentioned - it's hard to say filter is there.
BTW, I personally don't use screw in cap when lens is on camera (to not loose the moment when unscrewing cap), but for extra protection when lens is in jacket pocket it's a nice option. Is cap still usable when filter is attached into hood?
