Quick comparison between Lumix 14-28 f4-5.6 and Sigma 16-28 f2.8

[pdk42]

I have checked in Panasonic body S5.
There are only two compensation there for video:
Vignetting Compensation on/off and
Diffraction Compensation on/off.
seems like the body is not able to auto correct the lens distortion. And that's probably the reason why all panasonic lens as a rule has a well corrected distortion in the lens...

Your conclusion is not necessarily correct. It could just as well be that the corrections are always applied and can’t be turned off. That’s absolutely the case for in-camera JPEG stills.

And although it’s the lens that has the auto correct data, it’s the camera that applies the correction (I.e. it does the actual image manipulation).

 

[Babylonia]

I suspect you are talking past each other

On the one hand, @Norman is talking about "RAW Video" (e.g. ProRes RAW).
That is an output method by HDMI to an external recorder.

That is different from the basic video output formats in the camera itself, and can use camera set profiles.
(And JPG is no video at all).

In camera set video options - in camera footage:
-


External recording RAW video + editing options:
-



-

 

[pdk42]

I confess I know almost nothing about video so I could be completely off the mark with respect to how geometric distortion correction is handled.

 

[Norman]

let's narrow the discussion to video MOV output, in-body recording.
All video corrections are VERY different from JPEG.

My guess is that S5 does not do any in-camera distortion correction.
The reason - the distortion correction requires to cut the footage, e.g. - to CROP it.

That's why the camera will only correct the sharpness (diffraction) and the vignetting (the light in the corner) but keep the full footage.

 

[Norman]

BTW, it may be different for other brands like Sony. To perform the in body video distortion correction the CPU should be powerful enough...

 

[CharlesH]

let's narrow the discussion to video MOV output, in-body recording.
All video corrections are VERY different from JPEG.

My guess is that S5 does not do any in-camera distortion correction.
The reason - the distortion correction requires to cut the footage, e.g. - to CROP it.

That's why the camera will only correct the sharpness (diffraction) and the vignetting (the light in the corner) but keep the full footage.

I'm sorry for any confusion. Here is how the camera works. (This is my Panasonic 5SII. The 5S works the same.)

First for photography.
If you take a JPEG picture the camera uses the Lens Profile and applies it to the picture to remove the distortion.
If you take a RAW picture, the camera passes on the Lens Profile with the EXIF data but does not remove the distortion. Instead it is up to the RAW processor you use to do this. (And you can turn this off to see any lens distortion.)

For video:
If you shoot video with one of the camera supplied CODECs the camera uses the lens profile and applies it to the video to remove distortion.
(I already discussed video RAW earlier in this thread.)

To help you visualize this I used my Sigma 14-24mm f/2.8 and took shots of a test chart with JPEG, with RAW, and with video. For video I used open gate so you can see the full camera frame. This lens has barrel distortion. The lens is not perfectly aligned to the test chart, but this is a quick test and shows the distortion and distortion correction Here are the images; JPEG, RAW with no distortion correction, RAW with distortion correction, and a video grab jpeg.

JPEG

RAW with no distortion correction

RAW with distortion correction

Video image grab

Note that the barrel distortion is corrected in the video shot.

 

[Norman]

I'm sorry for any confusion. Here is how the camera works. (This is my Panasonic 5SII. The 5S works the same.)

First for photography.
If you take a JPEG picture the camera uses the Lens Profile and applies it to the picture to remove the distortion.
If you take a RAW picture, the camera passes on the Lens Profile with the EXIF data but does not remove the distortion. Instead it is up to the RAW processor you use to do this. (And you can turn this off to see any lens distortion.)

For video:
If you shoot video with one of the camera supplied CODECs the camera uses the lens profile and applies it to the video to remove distortion.
(I already discussed video RAW earlier in this thread.)

To help you visualize this I used my Sigma 14-24mm f/2.8 and took shots of a test chart with JPEG, with RAW, and with video. For video I used open gate so you can see the full camera frame. This lens has barrel distortion. The lens is not perfectly aligned to the test chart, but this is a quick test and shows the distortion and distortion correction Here are the images; JPEG, RAW with no distortion correction, RAW with distortion correction, and a video grab jpeg.

JPEG
View attachment 3175

RAW with no distortion correction
View attachment 3176

RAW with distortion correction
View attachment 3177

Video image grab
View attachment 3178

Note that the barrel distortion is corrected in the video shot.

thank you very much, interesting!
a question - in S5 II in video menu, do you have a distortion correction?
or just vignetting/diffraction?

 

[CharlesH]

a question - in S5 II in video menu, do you have a distortion correction?
or just vignetting/diffraction?

It is just Vignetting and Diffraction. You can't turn distortion correction on or off.

Another thing, my Sigma 14-24 uses rear mounting filters. I expect the Sigma 16-28 uses the same filters. Way back when I got the 14-24 I had to cut my own filters out of ND film, which was a real pain. Now you can buy glass filters for the lens and these are very handy and work well, and make video more practical.

 

[Babylonia]

let's narrow the discussion to video MOV output, in-body recording.
All video corrections are VERY different from JPEG.

My guess is that S5 does not do any in-camera distortion correction.
The reason - the distortion correction requires to cut the footage, e.g. - to CROP it.

My camera is not an S5 or S5 II -- which have more and better video options than an S1R camera.
Yesterday I tried my S1R in camera video footage. MP4 - AVCHD - MOV (10 bit)
As for profile, I used: "Cinelike Dynamic range".

As for the lens, chosen for my Sigma 50mm F1.4 DG DN | Art
Known for a more high distortion - if not corrected (see lenstip.com ). So it shall be seen very easily.

All in camera corrections set by profile, and e.g. custom set corrections (vignetting - "filter" settings) are used.
But looking to the footage, in my case also lens distortion is corrected.
And yes, by that also the footage is cropped.

Not only cropped, but I don't like the far more about 3:4 image size 5K MOV format = 4992 x 3744 pixels (25p).
(In my case only can choose between 24p - 25p - 30p).

The other formats: MP4 - AVCHD do have a HD landscape size = 1920 x 1080 pixels - but only 8 bit.
And cropped to. These cropping sizes can be related to the high resolution sensor.
Not suited well to reduce for more small video resolution sizes. (Pixel binning or cropping).
But bought my camera for doing "photo" (seldom for video).
-

 

[RBecker]

It is just Vignetting and Diffraction. You can't turn distortion correction on or off.

Another thing, my Sigma 14-24 uses rear mounting filters. I expect the Sigma 16-28 uses the same filters. Way back when I got the 14-24 I had to cut my own filters out of ND film, which was a real pain. Now you can buy glass filters for the lens and these are very handy and work well, and make video more practical.

The Sigma 16-28 uses front filters with 72mm diameter, no option for rear filters

 

[Markuswelder]

let me re-phrase my question.
having Canon 16-35/4L - is it worth to spend $1000 (approx) to buy Sigma 16-28 or Panasonic 14-28?
and can either of them replace Canon in travel?
What do you think?

I personally wouldn't. Unless you're shooting a lot of fast action, which traditionally, is not something one does a lot of with an ultrawide.

 

[Norman]

thanks all for your opinions.

 

[Markuswelder]

Well, I've been ummmmming & aaaaaahhhhhing over picking up a dedicated ultrawide for a while now. Trying to decide whether a faster or smaller prime would suit, or even a small pancake-ish one such as the Siggy 17mm f4. Or just stick with my Lumix 20-60mm. I've been pretty damn happy with the Lumix 20-60mm for my wider requirements, but I've seen the Lumix 14-28mm pop up on my feeds a bit of late. Today it was advertised at $880 Australian, so I bit. Cheaper than the m4/3 7-14mm equivalent, & faster too. In 35mm format terms anyway. Should be here in a few days. Pretty sure I'm going to really enjoy it. It gets pretty good reviews. Not that I take a great deal of notice of reviews anyway. pdk42 on here does some really nice work with his. I think it will pair utterly brilliantly with my Siggy 28-70mm f2.8 as a nice versatile, compact & light travel kit

Panasonic Lumix S 14-28MM F4-5.6 Macro Lens | VIDEOPRO

 

[RBecker]

Well, I've been ummmmming & aaaaaahhhhhing over picking up a dedicated ultrawide for a while now. Trying to decide whether a faster or smaller prime would suit, or even a small pancake-ish one such as the Siggy 17mm f4. Or just stick with my Lumix 20-60mm. I've been pretty damn happy with the Lumix 20-60mm for my wider requirements, but I've seen the Lumix 14-28mm pop up on my feeds a bit of late. Today it was advertised at $880 Australian, so I bit. Cheaper than the m4/3 7-14mm equivalent, & faster too. In 35mm format terms anyway. Should be here in a few days. Pretty sure I'm going to really enjoy it. It gets pretty good reviews. Not that I take a great deal of notice of reviews anyway. pdk42 on here does some really nice work with his. I think it will pair utterly brilliantly with my Siggy 28-70mm f2.8 as a nice versatile, compact & light travel kit

Panasonic Lumix S 14-28MM F4-5.6 Macro Lens | VIDEOPRO

That price is really great. One question (because Europe is far from Australia): is this your final price (including taxes like in Germany) or is tax an addon to this price like in the USA?
Is there any hint where this rebate is coming from? Special offer from the dealer or something from Panasonic?

 

[Markuswelder]

That price is really great. One question (because Europe is far from Australia): is this your final price (including taxes like in Germany) or is tax an addon to this price like in the USA?
Is there any hint where this rebate is coming from? Special offer from the dealer or something from Panasonic?

That's the final price. With our 10% GST included. If you ordered it from OS, that 10% should be deducted. I've done exactly that when travelling OS, claimed the tax back on what's called the Tourist Refund Scheme on leaving the country, and tossed the box or packed it in my suitcase on return, and just shut up about it. Never been questioned yet. Not the first clue as to where the discount is coming from, it's genuine Australian stock, not a Grey import. If I had to make a wild guess, I'd guess at it perhaps being from a split up kit when they were offering the 14-28 as a bonus lens with some of the Black Friday deals a while back. Only guessing though. I'm not complaining, or going to go digging on the matter either

 

[Pete_W]

Well, I've been ummmmming & aaaaaahhhhhing over picking up a dedicated ultrawide for a while now. Trying to decide whether a faster or smaller prime would suit, or even a small pancake-ish one such as the Siggy 17mm f4. Or just stick with my Lumix 20-60mm. I've been pretty damn happy with the Lumix 20-60mm for my wider requirements, but I've seen the Lumix 14-28mm pop up on my feeds a bit of late. Today it was advertised at $880 Australian, so I bit. Cheaper than the m4/3 7-14mm equivalent, & faster too. In 35mm format terms anyway. Should be here in a few days. Pretty sure I'm going to really enjoy it. It gets pretty good reviews. Not that I take a great deal of notice of reviews anyway. pdk42 on here does some really nice work with his. I think it will pair utterly brilliantly with my Siggy 28-70mm f2.8 as a nice versatile, compact & light travel kit

Panasonic Lumix S 14-28MM F4-5.6 Macro Lens | VIDEOPRO

That is a freaking awesome price! What a great deal!!

I bought mine in March last year for AUD $1,385 from Camera Warehouse in Sydney. I think that was maybe $100 less than list price at the time, but it was not long after the lens was released so it was the best I could find. I had to wait a few months before DxO PhotoLab added lens support for it.

Anyway, it's a great lens, compact, light weight, zooms internally and it's sharp.

 

[Markuswelder]

That is a freaking awesome price! What a great deal!!

Yeah, I couldn't really resist it at that price. Way cheaper than what people are asking for second hand ones. Almost feel guilty buying it It will combine so well with a couple of lenses I already have. Such as a second walkaround lens with just the Siggy 28-70mm f2.8. Or even just the 14-28mm plus Lumix 50mm f1.8. And as you wrote, it's small, light and great IQ. If it's anything like my 20-60mm, I'll love it for sure, as ironically, the 20-60mm is a lens that makes it so difficult for me to acquire something else

 

[Markuswelder]

If I had to make a wild guess, I'd guess at it perhaps being from a split up kit when they were offering the 14-28 as a bonus lens with some of the Black Friday deals a while back.

Well, it appears my guess was 100% accurate. Not complaining one little bit

He he he. 14mm is wiiiiiiiide I'm going to enjoy this. Looks pretty sharp right to the edges to me. Wide open @14mm

 

[Pete_W]

Well, it appears my guess was 100% accurate. Not complaining one little bit

He he he. 14mm is wiiiiiiiide I'm going to enjoy this. Looks pretty sharp right to the edges to me. Wide open @14mm

Deal of the century! It's a great lens.

 

[Norman]

bought 14-28