p.47 #1 · Sigma 14-24mm f/2.8 DG DN first impressions
On the topic of filters. I’ll be anxious to see where the Aurora rear loaded filters falls this March. I kinda like the idea of a more streamlined filter system. In the meantime I currently have a Haida 150mm kit designed for my 20mm 1.4 Sigma. I’m awaiting my 2nd copy of the Sigma 14-24, so I can’t yet test, but curious if the 20mm rig would work on this lens? Fingers crossed
p.47 #3 · Sigma 14-24mm f/2.8 DG DN first impressions
Hello,
I just bought the Sigma 14-24 a couple of days ago and I made a weird observation in Lightroom regarding the automatic lens correction:
When activating the automatic lens correction for Sigma 14-24 f/2.8 DG DN, on several of my photos with a blue sky a thin white curve appears both in the upper left and upper right corner of the picture in the sky.
Unfortunately this is very annoying because the white curve is quite distracting. When changing from automatic to manual correction, the white curves appear again.
Have you also experienced this in Lightroom when enabling the automatic correction for the Sigma?
Thanks and regards,
Roman
Jan 06, 2020 at 12:55 PM
roman37 Offline • [X]
p.47 #4 · Sigma 14-24mm f/2.8 DG DN first impressions
Attached are the links to 2 example photos with the white lines:
p.47 #8 · Sigma 14-24mm f/2.8 DG DN first impressions
MikeEvangelist wrote:
Mine definitely doesn't do this. Do you happen to have lens correction turned on in camera? That can cause weird interactions with correction applied in post processing.
p.47 #9 · Sigma 14-24mm f/2.8 DG DN first impressions
Fred Miranda wrote:
The main problem that a linear polarizer can cause is cross polarization on other reflective surfaces such the mirror in SLRs. (film or digital)
With mirrorless bodies, it's not an issue at all. Linear or circular polarizers work exactly the same way.
As long as there is no AA filter can not see how a linear pol can be an issue on mirrorless.I can see where it MIGHT be a problem if there is one. AA filters use birefringent material and thus polarize light. The linear pol should cause aliasing issues in one axis. . Would look for moiré in certain orientations. That be said I tried this on my GM-5 which has an AA filter and could not easily spot any significant deleterious effects. I may not be as astute a tester and pixel peeper as many here though. I hope to improve.
Jan 06, 2020 at 06:55 PM
roman37 Offline • [X]
p.47 #10 · Sigma 14-24mm f/2.8 DG DN first impressions
Thank you for your quick replies.
I made a typo above.. I wanted to say above, that if I change the correction from automatic to manual, the white curve does NOT appear any longer.. when brighting the image, I do not see the white line.
I also think it could be overcorrection. I will check the settings of my Sony A7r iii.
p.47 #11 · Sigma 14-24mm f/2.8 DG DN first impressions
docsmiles17 wrote:
Received filter today
I got mine to fit, but took some time to figure out the proper angle. Initially I was trying the 45 degree angle per instructions with fingers and it wouldn't go in and thought there was no way this filter would fit the lens as it feels like your pushing something against a cement wall. 45 degree is the wrong angle. It requires a much smaller angle than that to insert properly.
I aligned the filter horizontal to the slot and used the rubber end of mechanical pencil to "hold" the filter and find the right angle. This angle is when the nose is resting against the slot and other end (Kase filter info on) is just above the silver mounting ring (roughly ½ of the 45 as instructed). It doesnt really take any force or effort at all to slide in. Its all about the angle and not trying to muscle it in. Be patient and work the angle versus using more force. I can not hold the filter with my fingers to get the right angle as that angle is so close to mount ring (concerns me with actual field use).
It doesnt feel like it will go in and then, bam, it will slide right in quite easily but only once you have the right angle. I have been successful with each re-insertion (3X before writing this) and each time it becomes easier to find the right angle. I took some pics with filter fully in slot so you can see the insertion angle from different perspectives.
I can not stress enough how important the angle is versus the instinct to "muscle it in". You can not force this filter in. Not only will you fail at inserting it, you will risk breaking it. Once you have the right angle, it requires very little pressure for the filter to slide in.
I will field test it asap and report back....Show more →
I can't get the Kase rear filter to fit into my lens' rear slot. No matter the angle. Very bad design!
p.47 #12 · Sigma 14-24mm f/2.8 DG DN first impressions
Fred Miranda wrote:
I can't get the Kase rear filter to fit into my lens' rear slot. No matter the angle. Very bad design!
I'm in contact with the CEO of Kase Germany. He is currently discussing the topic with the Headquarter in China.
I've also contacted Sigma Germany. This is their answer: "Informationen bezüglich der Kompatibilität dieser Filter liegen uns keine vor. Objektivseitig wüssten wir keine Möglichkeit, servicetechnisch etwas an der Halterung zu verändern." They see no possiblity to modify the lens slot in service for a better fit of the filter.
p.47 #13 · Sigma 14-24mm f/2.8 DG DN first impressions
Bobu wrote:
I'm in contact with the CEO of Kase Germany. He is currently discussing the topic with the Headquarter in China.
I've also contacted Sigma Germany. This is their answer: "Informationen bezüglich der Kompatibilität dieser Filter liegen uns keine vor. Objektivseitig wüssten wir keine Möglichkeit, servicetechnisch etwas an der Halterung zu verändern." They see no possiblity to modify the lens slot in service for a better fit of the filter.
It looks like Kase rushed this filter to market.
The Sigma's rear slot thickness is ~0.3mm which is the same thickness of the Kase glass (Measured 0.3mm with a micrometer). However, there must be different tolerance from different batch of the Sigma lens. It does not fit my lens (US model) after trying to insert it at all possible angles.
Even if it fits in some lenses from different batches, it would be very inconvenient to mount and unmount it. I would not want to bring it to the field when shooting in adverse conditions and therefore I do not recommend it.
The Haida glass is even thicker at 0.5mm which influences field curvature in a very negative way. On top of that, it does not fit 100% parallel into the slot since there is no lower tip to lock it down. (It could tilt when carrying the lens)
I am waiting for the Aurora magnetic version and I hope it works without any degradation of IQ (higher vignetting from the new magnetic frame for example)
We already know their glass is ~0.3mm so field curvature interference should be minimal.
p.47 #14 · Sigma 14-24mm f/2.8 DG DN first impressions
Fred Miranda wrote:
It looks like Kase rushed this filter to market.
The Sigma's rear slot thickness is ~0.3mm which is the same thickness of the Kase glass (Measured 0.3mm with a micrometer). However, there must be different tolerance from different batch of the Sigma lens. It does not fit my lens (US model) after trying to insert it at all possible angles.
Even if it fits in some lenses from different batches, it would be very inconvenient to mount and unmount it. I would not want to bring it to the field when shooting in adverse conditions and therefore I not recommend it.
The Haida glass is even thicker at 0.5mm which influences field curvature in a very negative way. On top of that, it does not fit 100% parallel into the slot since there is no lower tip to lock it down. (It could tilt when carrying the lens)
I am waiting for the Aurora magnetic version and I hope it works without any degradation of IQ (high vignetting for example)
We already know their glass is ~0.3mm....Show more →
Same experience and currently same recommendation.
p.47 #15 · Sigma 14-24mm f/2.8 DG DN first impressions
Fred Miranda wrote:
It looks like Kase rushed this filter to market.
The Sigma's rear slot thickness is ~0.3mm which is the same thickness of the Kase glass (Measured 0.3mm with a micrometer). However, there must be different tolerance from different batch of the Sigma lens. It does not fit my lens (US model) after trying to insert it at all possible angles.
Even if it fits in some lenses from different batches, it would be very inconvenient to mount and unmount it. I would not want to bring it to the field when shooting in adverse conditions and therefore I do not recommend it.
The Haida glass is even thicker at 0.5mm which influences field curvature in a very negative way. On top of that, it does not fit 100% parallel into the slot since there is no lower tip to lock it down. (It could tilt when carrying the lens)
I am waiting for the Aurora magnetic version and I hope it works without any degradation of IQ (higher vignetting from the new magnetic frame for example)
We already know their glass is ~0.3mm so field curvature interference should be minimal....Show more →
I wonder if the aurora magnetic version will attract more dust to the sensor.
So far we are 1 for 3 with fitting the Kase filter of those who have posted. Thats not good. I am getting very quick (couple secs) to insert each time now and can use my fingers to do so. I presume its about the same amount of time to install a front filter system, likely faster. I started a short video and will post asap on installing the Kase filter as I initially thought the filter would not fit my lens and was ready to give up but then it slipped into place. Lucky me?!1? My hope is that it will help others who (like me) were frustrated upon initial insertion and get it to fit.
Any rear filter system where the lens needs to be removed and thus exposing the sensor (no matter how short) would cause hesitation to be used in adverse conditions. This is a legitimate concern as I dont like even changing lenses in adverse conditions. The other option is to have rather large 150mm front filters that typically require a bigger bag to carry and any vignetting that likely will result. I guess it comes down to personal preference at this point until a more promising solution emerges.
p.47 #16 · Sigma 14-24mm f/2.8 DG DN first impressions
docsmiles17 wrote:
I wonder if the aurora magnetic version will attract more dust to the sensor.
So far we are 1 for 3 with fitting the Kase filter of those who have posted. Thats not good. I am getting very quick (couple secs) to insert each time now and can use my fingers to do so. I presume its about the same amount of time to install a front filter system, likely faster. I started a short video and will post asap on installing the Kase filter as I initially thought the filter would not fit my lens and was ready to give up but then it slipped into place. Lucky me?!1? My hope is that it will help others who (like me) were frustrated upon initial insertion and get it to fit.
Any rear filter system where the lens needs to be removed and thus exposing the sensor (no matter how short) would cause hesitation to be used in adverse conditions. This is a legitimate concern as I dont like even changing lenses in adverse conditions. The other option is to have rather large 150mm front filters that typically require a bigger bag to carry and any vignetting that likely will result. I guess it comes down to personal preference at this point until a more promising solution emerges. ...Show more →
Yes, consider yourself lucky. I have alerted Kase about it.
p.47 #17 · Sigma 14-24mm f/2.8 DG DN first impressions
docsmiles17 wrote:
I wonder if the aurora magnetic version will attract more dust to the sensor.
So far we are 1 for 3 with fitting the Kase filter of those who have posted. Thats not good. I am getting very quick (couple secs) to insert each time now and can use my fingers to do so. I presume its about the same amount of time to install a front filter system, likely faster. I started a short video and will post asap on installing the Kase filter as I initially thought the filter would not fit my lens and was ready to give up but then it slipped into place. Lucky me?!1? My hope is that it will help others who (like me) were frustrated upon initial insertion and get it to fit.
Any rear filter system where the lens needs to be removed and thus exposing the sensor (no matter how short) would cause hesitation to be used in adverse conditions. This is a legitimate concern as I dont like even changing lenses in adverse conditions. The other option is to have rather large 150mm front filters that typically require a bigger bag to carry and any vignetting that likely will result. I guess it comes down to personal preference at this point until a more promising solution emerges.
...Show more →
I’ve been following along reading this thread with interest as an early pre-order Sigma 14-24 owner. I purchased the 150mm NiSi front filter system for this lens as soon as it was out and use it with a 3-stop ND, 10-stop ND, CPL, and combo CPL + 6-stop ND filters. I tried using the Lee gel filters on the rear lens holder but decided it was not for me.
I get the complaint that using the 150mm filter system requires a larger bag, it is heavier than the rear filters and takes up more room in the bag. But to be honest I just don’t understand the reluctance to use the front filters given the need to remove the lens from the camera allowing more dust and worse onto the camera’s sensor. And there is the real limiting factor of not being able to dial-in just the right amount of polarization effect like you can with the 150mm front filters. To me, anyone really looking to get the optimal results of filtering this outstanding lens is short changing the results by not using a higher quality 150mm front filter system. Just my 2 cents😁
p.47 #18 · Sigma 14-24mm f/2.8 DG DN first impressions
Fred Miranda wrote:
The Haida glass is even thicker at 0.5mm which influences field curvature in a very negative way. On top of that, it does not fit 100% parallel into the slot since there is no lower tip to lock it down. (It could tilt when carrying the lens)
Fred, is this your personal experience? My Haida sits always 100% parallel and doesn't move at all when carrying the lens. I just wish that the Haida would be 0.3mm instead. Since neither Haida nor Kase will probably change their design soon I will also wait for the Aurora.
p.47 #19 · Sigma 14-24mm f/2.8 DG DN first impressions
Bobu wrote:
Fred, is this your personal experience? My Haida sits always 100% parallel and doesn't move at all when carrying the lens. I just wish that the Haida would be 0.3mm instead. Since neither Haida nor Kase will probably change their design soon I will also wait for the Aurora.
I have not tried the Haida but did try an early Aurora version that was 0.5mm and field curvature was imo unacceptable at the wider FLs.
What I meant about the parallelism is that the Haida filter only locks at the top (with the slider) but not at the bottom since it does not have the locking tip.
Fred
p.47 #20 · Sigma 14-24mm f/2.8 DG DN first impressions
Fred Miranda wrote:
I have not tried the Haida but did try an early Aurora version that was 0.5mm and field curvature was imo unacceptable at the wider FLs.
What I meant about the parallelism is that the Haida filter only locks at the top (with the slider) but not at the bottom since it does not have the locking tip.
Fred
That was my fear at first too. But despite not having the lower nose it perfectly locks in place and always in the same position (and stays there). The disadvantage of 0.5mm is very clear as my detailled corner sharpness and FC tests have shown.
