p.39 #1 · Sigma 14-24mm f/2.8 DG DN first impressions
I've tested multiple copies of the CV15 and Laowa 15/F2 in the last year and a half, and none were anywhere near as sharp in the corners (and had much worse CA) compared to the four Sigma 14-24 DG DN zooms I've tried. If your priority is across-the-frame sharpness in an ultrawide, the Sigma is unrivalled. And you get superb performance all the way out to 24mm thrown in for free.
p.39 #2 · Sigma 14-24mm f/2.8 DG DN first impressions
I tested against my Distagon 15/2.8 ZE, and was shocked that the Sigma meets/beats it at all apertures, everywhere across the frame. Never thought that would happen with a zoom. Agreed that it's much superior to the CV15 that I used to have, and it was a very good copy.
p.39 #3 · Sigma 14-24mm f/2.8 DG DN first impressions
Sounds like 14-24 sigma and sony 35.18 will be good for UWA and WA options to complement my 135mm 1.8gm, perhaps a 55 or 85 1.8 too.
Still worried about the filters, a good filter system for sigma will cost half the price of the lens (£500). With an ultra wide angle lens ideally you are realling looking at 6-10 stops of ND for long exposure landscapes. The 2-4 stops are not sufficient imo, I will use that sort of range for getting my flash synch speeds to synch up when shooting wide open in mid day sun. For that I will probably grab this https://www.bristolcameras.co.uk/p-stc-clip-filter-ir-cut-nd16-for-sony-full-frame-cameras.htm
Can use it on the 35/55/85/135 without any issues and also have the lens hood on too.
p.39 #4 · Sigma 14-24mm f/2.8 DG DN first impressions
In Australia at least, a Nisi S5 adapter for the sigma DG DN zoom along with an S5 CPL+ND64 (6 stop) filter sets you back about 300 UK pounds (a little over AU $600). You can get them for less on ebay sometimes.
By adding front and rear caps (front cap is now available from Nisi), and premounting the filter in the adapter, I have a quality filter set-up that takes up not too much space in my pack for a 150mm system, and can be mounted or dismounted on the lens in about 10 seconds. Works really well for me.
p.39 #5 · Sigma 14-24mm f/2.8 DG DN first impressions
Volkan wrote:
Sounds like 14-24 sigma and sony 35.18 will be good for UWA and WA options to complement my 135mm 1.8gm, perhaps a 55 or 85 1.8 too.
Still worried about the filters, a good filter system for sigma will cost half the price of the lens (£500). With an ultra wide angle lens ideally you are realling looking at 6-10 stops of ND for long exposure landscapes. The 2-4 stops are not sufficient imo, I will use that sort of range for getting my flash synch speeds to synch up when shooting wide open in mid day sun. For that I will probably grab this https://www.bristolcameras.co.uk/p-stc-clip-filter-ir-cut-nd16-for-sony-full-frame-cameras.htm
Can use it on the 35/55/85/135 without any issues and also have the lens hood on too....Show more →
I tried a clip night pollution filter on my 14-24 and it induced field curvature (the Optolong L-Pro). If you get the filter you linked, you may want to test it thoroughly.
p.39 #6 · Sigma 14-24mm f/2.8 DG DN first impressions
scrappydog wrote:
I tried a clip night pollution filter on my 14-24 and it induced field curvature (the Optolong L-Pro). If you get the filter you linked, you may want to test it thoroughly.
I have read about the field curvature problem earlier on in the thread regarding the STC optics filter, I have no intention to use it on the 14-24. It will be used for wide open portraits during mid day on 35/55/85/135 focal lengths.
p.39 #7 · Sigma 14-24mm f/2.8 DG DN first impressions
rvh23 wrote:
In Australia at least, a Nisi S5 adapter for the sigma DG DN zoom along with an S5 CPL+ND64 (6 stop) filter sets you back about 300 UK pounds (a little over AU $600). You can get them for less on ebay sometimes.
By adding front and rear caps (front cap is now available from Nisi), and premounting the filter in the adapter, I have a quality filter set-up that takes up not too much space in my pack for a 150mm system, and can be mounted or dismounted on the lens in about 10 seconds. Works really well for me.
p.39 #8 · Sigma 14-24mm f/2.8 DG DN first impressions
scrappydog wrote:
I tried a clip night pollution filter on my 14-24 and it induced field curvature (the Optolong L-Pro). If you get the filter you linked, you may want to test it thoroughly.
Aurora will also offer a Light pollution reduction rear filter. However the owner just told me that it will be a little thicker (0.33mm) than their ND set (0.2mm). They could not make the light pollution one thinner than that. Still about 3 times thinner than the clip-on versions that attach to the camera mount.
p.39 #9 · Sigma 14-24mm f/2.8 DG DN first impressions
Fred Miranda wrote:
Aurora will also offer a Light pollution reduction rear filter. However the owner just told me that it will be a little thicker (0.33mm) than their ND set (0.2mm). They could not make the light pollution one thinner than that. Still about 3 times thinner than the clip-on versions that attach to the camera mount.
Good to know. Are you going to test the Aurora filter? If it works well, I will get one for sure.
p.39 #10 · Sigma 14-24mm f/2.8 DG DN first impressions
Fred Miranda wrote:
Aurora will also offer a Light pollution reduction rear filter. However the owner just told me that it will be a little thicker (0.33mm) than their ND set (0.2mm). They could not make the light pollution one thinner than that. Still about 3 times thinner than the clip-on versions that attach to the camera mount.
Fred, any idea when the Aurora kit will be released?
p.39 #11 · Sigma 14-24mm f/2.8 DG DN first impressions
smhoer wrote:
Fred, any idea when the Aurora kit will be released?
They are shooting for January release and availability. This week I should get the light pollution rear filter prototype for the S14-24/2.8.
I've learned today from Haida that their rear filters will have 0.5mm thickness....
Initially, Aurora was going with the same 0.5mm thickness but after I showed them how this thickness would influence field curvature in a negative way, they went back to the drawing board and tested with thinner glass. The latest prototype was thin enough to avoid any noticeable change in field curvature.
Another differential for Aurora's thinner glass is the aluminum framing around it which should protect the glass from shattering when mounting/unmounting in the field.
There is also the choice of using Lee's ND film sheet cut to the shape of the rear filter slot but that's made of plastic and not glass...so I would avoid shooting it against the light. I've learned from my tests that when using plastic or gel filters, the higher the ND strength, the more severe the loss of contrast and resolution, which is not the case with Scott multicoated glass.
p.39 #13 · Sigma 14-24mm f/2.8 DG DN first impressions
Will these rear filters also have rear polarising filters too? If yes how would you adjust the filter as this larticular fikter needs to be turned around to control its intensity. This will make or break the deal for me. Forking out on external system just for polarising filter is inefficient.
p.39 #15 · Sigma 14-24mm f/2.8 DG DN first impressions
kefirm wrote:
Hard to imagine how CPL would work as rear filter. For now I am also waiting for some proper rear ND.
I have a Lee Filters Polarizing Gel 19" x 12" (MFR PART #: R293F) that I cut to fit the rear slot. One can rotate the entire camera to get the desired polarizer effect and then crop the scene later. It's obviously not ideal but it works.
p.39 #16 · Sigma 14-24mm f/2.8 DG DN first impressions
Fred Miranda wrote:
I have a Lee Filters Polarizing Gel 19" x 12" (MFR PART #: R293F) that I cut to fit the rear slot. One can rotate the entire camera to get the desired polarizer effect and then crop the scene later. It's obviously not ideal but it works.
If that works couldn't you cut out several templates at different angles? I know that sounds like a clunky solution but for a landscape photographer that has lots of time to compose that may be a workable solution.
p.39 #17 · Sigma 14-24mm f/2.8 DG DN first impressions
It works nicely on an A7R IV, since a vertical crop of a horizontal image yields a 26MP image or thereabouts. On an A7 III, not so much.
Fred Miranda wrote:
I have a Lee Filters Polarizing Gel 19" x 12" (MFR PART #: R293F) that I cut to fit the rear slot. One can rotate the entire camera to get the desired polarizer effect and then crop the scene later. It's obviously not ideal but it works.
p.39 #18 · Sigma 14-24mm f/2.8 DG DN first impressions
dbehrens wrote:
If that works couldn't you cut out several templates at different angles? I know that sounds like a clunky solution but for a landscape photographer that has lots of time to compose that may be a workable solution.
I tried that approach as well but the polarizing strength is dictated by the position of the sun. One could cary a few pre-cut angles that fit into rear slot and check which one would work better for the scene. This is what I have right now for this lens but find myself grabbing my Lox 21 or Lox 35 for my polarizing needs.
p.39 #19 · Sigma 14-24mm f/2.8 DG DN first impressions
rvh23 wrote:
In Australia at least, a Nisi S5 adapter for the sigma DG DN zoom along with an S5 CPL+ND64 (6 stop) filter sets you back about 300 UK pounds (a little over AU $600). You can get them for less on ebay sometimes.
By adding front and rear caps (front cap is now available from Nisi), and premounting the filter in the adapter, I have a quality filter set-up that takes up not too much space in my pack for a 150mm system, and can be mounted or dismounted on the lens in about 10 seconds. Works really well for me.
p.39 #20 · Sigma 14-24mm f/2.8 DG DN first impressions
jeetsukumaran wrote:
This:
?t=7
Indicates that the lens vignettes with the filter, at least at the wider settings.
Is this true?
That link is for the old Sigma DSLR zoom (for canon and nikon) and filter system, not the new DG DN lens.
I haven't needed to add the rectangular filter attachments, but certainly using the DG DN adapter with the round CPL+ND64 filter there is absolutely no vignetting over the whole zoom range.
