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Archive 2019 · Sigma 14-24 For Sony. 77mm filter trick

scalanc2
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p.1 #1 · p.1 #1 · Sigma 14-24 For Sony. 77mm filter trick

This new lens is really beautiful.
The problem of fitting filters has been apparently solved with rear mounted ones.
No one is available, unfortunately.
In the mean time I checked the possibility to fit 77mm front mounted filters like I did with Sony 12-24.
It works, limited to 20 to 24 focal lenght. Not bad!

Sep 19, 2019 at 07:31 AM

saxguy
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p.1 #2 · p.1 #2 · Sigma 14-24 For Sony. 77mm filter trick

Being that you owned both, if only able to keep either the 12-24 or the 14-24, which would you choose?

Sep 19, 2019 at 08:10 AM

scalanc2
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p.1 #3 · p.1 #3 · Sigma 14-24 For Sony. 77mm filter trick

I decided for the Sigma.
Not only for the fastest aperture but mainly for the higher optical quality of this lens.
For quality I mean sharpness (at the borders it is day and night), bokeh, flare resistance and colours.
On the other end Sony is 2mm wider and quite lighter.
I found this Sigma to be an effective substitute of equivalent fixed focal lenses.
For instance I found this lens to be globally better than Batis 18mm.
But this is just me and I’ll be happy to listen to other opinions.

Sep 19, 2019 at 08:28 AM

rvh23
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p.1 #4 · p.1 #4 · Sigma 14-24 For Sony. 77mm filter trick

Agreed. This lens is now my primary landscape lens, replacing the the highest available IQ primes available in its range. I tried doing the same with the Sony zooms in the past (both the GM and the 12-24), and although they were good, ended up going back to the primes. I've shot with the Sigma for about a month now, and have no plans at all to go back to the primes. In the zoom's range, I only plan to carry an additional Loxia 21 for sunstars.

re the 77mm filter, I'm not surprised it only works over a very limited range because the left and right petals on the hood are already contoured to very closely match the lens curvature. Unfortunately I think the only practical way to use filters in the field with this lens is going to be with 150mm systems.

Sep 19, 2019 at 08:15 PM

saxguy
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p.1 #5 · p.1 #5 · Sigma 14-24 For Sony. 77mm filter trick

Thanks for the insights. I just purchased one this afternoon and it should be here tomorrow.

Sep 19, 2019 at 08:19 PM

AGeoJO
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p.1 #6 · p.1 #6 · Sigma 14-24 For Sony. 77mm filter trick

rvh23 wrote:
Agreed. This lens is now my primary landscape lens, replacing the the highest available IQ primes available in its range. I tried doing the same with the Sony zooms in the past (both the GM and the 12-24), and although they were good, ended up going back to the primes. I've shot with the Sigma for about a month now, and have no plans at all to go back to the primes. In the zoom's range, I only plan to carry an additional Loxia 21 for sunstars.

re the 77mm filter, I'm not surprised it only works over a very limited...Show more →

I happened to see that you put that lens up for sale... Or maybe you do have 2 or more copies of the lens, which is possible, of course.

Sep 19, 2019 at 08:25 PM

rvh23
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p.1 #7 · p.1 #7 · Sigma 14-24 For Sony. 77mm filter trick

Yes, I'm trying to find a copy that is perfectly centered over its entire zoom range, which is probably a bit of a fool's errand for a lens as complex as this. I've tried four copies so far, and while none of them were perfectly centered (pixel peeping at 100%, at the long end in particular) they nevertheless produced superb high IQ real world images (both landscape ans astro). I have no reservation at all highly recommending it for landscape and astro work.

Sep 19, 2019 at 08:56 PM

scrappydog
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p.1 #8 · p.1 #8 · Sigma 14-24 For Sony. 77mm filter trick

scalanc2 wrote:
I decided for the Sigma.
Not only for the fastest aperture but mainly for the higher optical quality of this lens.
For quality I mean sharpness (at the borders it is day and night), bokeh, flare resistance and colours.
On the other end Sony is 2mm wider and quite lighter.
I found this Sigma to be an effective substitute of equivalent fixed focal lenses.
For instance I found this lens to be globally better than Batis 18mm.
But this is just me and I’ll be happy to listen to other opinions.

I had the same result with my 14-24 against the Batis 18. The Batis is good, but the Sigma is better.

Sep 19, 2019 at 09:00 PM

Fred Miranda
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p.1 #9 · p.1 #9 · Sigma 14-24 For Sony. 77mm filter trick

I've ordered the Lee 1.2 (4 stops) gel filter to play with the 14-24/2.8. Should have both next week and will let you guys know if it works well.
https://www.adorama.com/le299s.html

I'm worried about induced field curvature with the rear gel though. (especially at the wider range)
The rear filter shape seems to be very weird. Why not just make it square!?

https://www.fredmiranda.com/forum/topic/1609212/12#14980784

Sep 19, 2019 at 09:12 PM

wind30
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p.1 #10 · p.1 #10 · Sigma 14-24 For Sony. 77mm filter trick

rvh23 wrote:
Yes, I'm trying to find a copy that is perfectly centered over its entire zoom range, which is probably a bit of a fool's errand for a lens as complex as this. I've tried four copies so far, and while none of them were perfectly centered (pixel peeping at 100%, at the long end in particular) they nevertheless produced superb high IQ real world images (both landscape ans astro). I have no reservation at all highly recommending it for landscape and astro work.

Mine is weak on the right TOP at 24mm f2.8.

Do u have samples at the Long end for all 4 lens for comparison?

I am thinking if I should try another copy. It is perfect at f5.6... i probably should not as I don’t require corner to corner sharpness at f2.8. Just bugs me that my copy might not be so good.

It’s very good at 14mm. The dencetering shows up at 18mm onwards

Having said that the weak TOP right corner at f2.8 is as sharp as my Sony 12-24mm at f4. Basically the weakest corner of the sigma Beats the Sony hands down at same aperture.

Sep 19, 2019 at 09:32 PM

Fred Miranda
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p.1 #11 · p.1 #11 · Sigma 14-24 For Sony. 77mm filter trick

Sep 19, 2019 at 10:30 PM

Fred Miranda
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p.1 #12 · p.1 #12 · Sigma 14-24 For Sony. 77mm filter trick

scalanc2 wrote:
It works, limited to 20 to 24 focal lenght. Not bad!

Are you joking? That's really bad!

At least with the 12-24/4 G, we had a useful range from 15-24mm.

Sep 19, 2019 at 10:31 PM

rvh23
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p.1 #13 · p.1 #13 · Sigma 14-24 For Sony. 77mm filter trick

wind30 wrote:
Mine is weak on the right TOP at 24mm f2.8.

Do u have samples at the Long end for all 4 lens for comparison?

I am thinking if I should try another copy. It is perfect at f5.6... i probably should not as I don’t require corner to corner sharpness at f2.8. Just bugs me that my copy might not be so good.

It’s very good at 14mm. The dencetering shows up at 18mm onwards

Having said that the weak TOP right corner at f2.8 is as sharp as my Sony 12-24mm at f4. Basically the weakest corner of the sigma Beats the...Show more →

I don't have side by side comparison for all 4 copies, but if you look at the initial copy I reviewed in the "first impressions" thread, you will see that even for the weakest corner at the long end, astro performance was just fine, and that's the main application I want sharp corners for wide open. Maybe test yours for that as well if you shoot astro?

Otherwise, if your copy is good from 5.6 onwards, it sounds fine. Looking for a better centered copy is more theoretical than practical in that case, and might take a lot of copies or good luck.

Below are the four corners of the best copy I've tried, and which I may well end up just keeping. This was focused for best balance across the four corners. I can get better left side performance in particular with this copy, but at the expense of the right side.

First image shows 100% crops from 61MP with minimal default CR sharpening, second one shows the same but resampled to be equivalent to 42MP capture for comparison with previous tests.

61MP

...resampled for 42MP

Edited on Sep 19, 2019 at 10:34 PM · View previous versions

Sep 19, 2019 at 10:31 PM

Fred Miranda
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p.1 #14 · p.1 #14 · Sigma 14-24 For Sony. 77mm filter trick

rvh23 wrote:
I don't have side by side comparison for all 4 copies, but if you look at the initial copy I reviewed in the "first impressions" thread, you will see that even for the weakest corner at the long end, astro performance was just fine, and that's the main application I want sharp corners for wide open. Maybe test yours for that as well if you shoot astro?

Otherwise, if your copy is good form 5.6 onwards, it sounds fine. Looking for a better centered copy is more theoretical than practical in that case, and might take a lot of copies...Show more →

It's not perfect but does not look too bad at all. (for a zoom)

Sep 19, 2019 at 10:34 PM

rvh23
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p.1 #15 · p.1 #15 · Sigma 14-24 For Sony. 77mm filter trick

Fred Miranda wrote:
It's not perfect but does not look too bad at all. (for a zoom)

Agreed, I've certainly seen plenty high end primes that are worse than this. I know I should really stop obsessing and just go and shoot more real world images.

Sep 19, 2019 at 10:45 PM

Jochenb
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p.1 #16 · p.1 #16 · Sigma 14-24 For Sony. 77mm filter trick

That's really not bad at all, especially for a zoom on 61MP. You'll search forever if you want a copy that's perfect at every focal length.

Sep 20, 2019 at 02:25 AM

wind30
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p.1 #17 · p.1 #17 · Sigma 14-24 For Sony. 77mm filter trick

My lens left side is sharper but the right side is way softer. I did not try to refocus to balance all 4 corners. I just focus in the middle at a distance point and the top right side is always much weaker.

Does most of your copies show better left side? Kind of interesting as I wonder if it is intentional by Sigma to emphasize the left.

Sep 20, 2019 at 03:45 PM

rvh23
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p.1 #18 · p.1 #18 · Sigma 14-24 For Sony. 77mm filter trick

Yes as it happens left has been stronger on the ones I've tried too, but that may still be a sample size issue. If it is systematic, I can't imagine it would be intentional. Although it does happen to be the case that for non-astro applications, having your top right corner as the weakest one may be a good thing because it's the corner most likely to include sky.

Sep 20, 2019 at 04:56 PM

wind30
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p.1 #19 · p.1 #19 · Sigma 14-24 For Sony. 77mm filter trick

Most people read from left to right. I tend to place my subject on the TOP left leading to the bottom right.

It seems that the two diagonals are different visually... I much prefer the TOP left to bottom right diagonal.

Sep 20, 2019 at 09:43 PM

spirolino
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p.1 #20 · p.1 #20 · Sigma 14-24 For Sony. 77mm filter trick

https://www.fredmiranda.com/forum/topic/1609212/12#14980784

Good luck! I will stay tuned.

Generally I would prefer something ready made like this...
https://www.fredmiranda.com/forum/topic/1609212/13#14987191

Sep 20, 2019 at 09:44 PM

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