Do you have flare...

Shooter

Shooter

Veteran
Anyone here having flare issues with their AF100 footage?

If so ...when or what kind of situation is it when you notice it?

Has anyone actually tested or observed flare in a high key lighting situation? eg a bright scene - lots of white.

Flare may also be observed as a desaturation or "foggy/milky" look. A lack of contrast. Highlight noise. Abberations.

I will be more forthcoming as soon as I complete a solution test in a couple of days. ( Dont worry ..its not the AF100).

Just curious meantime.
 
Shooter,

I haven't noticed anything out of the ordinary. Primes are less of a problem than zooms,but I can usually correct with an eyebrow and side wings on the matte box, or a well placed flag.
 
Flaring will have very little to do with the camera and almost entirely with the lens. A more proper question could be "How does X lens do with flaring?"
 
andyjar said:
Flaring will have very little to do with the camera and almost entirely with the lens. A more proper question could be "How does X lens do with flaring?"
Click to expand...

Actually...not entirely true.

(There is something kind of unique with the AF100 camera)
 
I dont find it to flare worse than any other camera. I find any flare issues are due to the lens, not the camera sensor.
 
I suspect the internal ND filters might be prone to flaring. I've seen some similar flare artifacts across several different lens (slight pink triangles/parallelograms with a hard edge parallel to the frame edges). But I haven't used my AF100 much and this is just a conjecture.

edit: I like the way it looks though.
 
I've seen many examples (from other people) of image characteristics that would classically be described as "flare" from 4/3 and m4/3 still cameras using adapted lenses. There was a lot of talk for a long time about how m4/3 sensors didn't handle off-axis light the same way film did etc.. It seems to be pretty inconsistant though which leads me (and some other people) to believe there are some lens designs that just don't work very well on digital sensors. I also think I read somewhere that Leica was dealing with this issue in the development of the M8 and M9.

Then there is also the occasional adapter with a reflective interior but I bet you are using really good adapters?

So far I've been really lucky with Leica R series primes and the Canon L series FD primes, only Nikon mount I have is the Tokina.
 
O.K . I was not trying to be mysterious or cryptic but I wanted to hear this...

Then there is also the occasional adapter with a reflective interior but I bet you are using really good adapters?
Click to expand...

Well spotted and exactly what I am dealing with. (I wanted a confirmation from some one else) . Wish I had a prize for you. Phil.

This was an issue seriously puzzling us until we realised that my (3) adapters have "reflective interiors". Two are very high quality ( expensive) and the other a cheaper adapter.

The back end of the "expensive ones" have stainless steel interiors polished like a mirror. The cheaper one has a glossy black interior.

Because the lens over scans the interior...they are all throwing incident light all over the sensor. ie FLARE

Currently I am "treating" all the interiors of the adapters with matte black (anti reflectant) self etching metal paint. Sprayed on by a professional colleague.

This has been a well documented issue in telescopes and lenses for "ever". Google the subject.

Lenses generally have it well under control...but the unique factor of ADAPTERS on AF100s ( and the like) have not dealt with the issue!

Side note: Many old lenses used a flocking to avoid this issue.

Take care folks.
 
i have a canon fd 85mm 1.2 that flares like a sonofabitch.
anybody out there knows the best way to reduce it? any kind of filter that makes it go away or am i stuck with mattebox or clunky lens hood :\
 
Last edited:
I have an Adaptimax adaptor and I often get flares when using my Nikon primes. On my first shoot with the camera I didn't know of the issue and every now and then there is a shot where a purple haze can be seen across the image.

I now know what to look out for and although it is a pain I can usually deal with it using the flags on my matte box or by using some creatively moulded "black-wrap".

I might look into seeing if I can do anything about the inside of the Adaptimax adaptor.
 
Shooter said:
The back end of the "expensive ones" have stainless steel interiors polished like a mirror. The cheaper one has a glossy black interior.
Because the lens over scans the interior...they are all throwing incident light all over the sensor. ie FLARE
Click to expand...

Craig: Really interesting and useful observation, though I must admit, my Voigtlander Nikon/MFT adaptor is flawless - chrome rear exterior fitting but matte black throughout on the interior.

Surprised and pleased to see my inexpensive Fotodiox Contax CY/MFT adaptor fits tight with matte black finish throughout the interior with a milled black rear fitting.

I'd be interested in a Novoflex report from any user.

Regards,
Scott
 
Very good point about adapters. I use full frame Zeiss ZF.2's - much bigger image circle than M4/3 requires. I use a Metabones adapter for them and I 'flocked' the interior as soon as I got it. I have a couple of other (unfrocked) Nikon-M4/3 adapters - next shoot I'll do some comparisons between them and see if there are any visual differences.
 
dcloud said:
i have a canon fd 85mm 1.2 that flares like a sonofabitch.
anybody out there knows the best way to reduce it? any kind of filter that makes it go away or am i stuck with mattebox or clunky lens hood :\
Click to expand...

If you have the same issue that I have with the adapter...you will find it is almost impossible to fix with flags and mattes.
We did extensive matting and masking tests on numerous lenses and there was always a degree of flare left
That is how we discovered the issue.

There is no filter that will do it either.

You should be shooting without light on your front element whatever.

I have an Adaptimax adaptor and I often get flares when using my Nikon primes.
Click to expand...

You should consider fixing the interior then.

Mine come back today and will be re tested immediately and well before a shoot next week.
The shoot is high key and I will not undertake it with this kit unless I have resolved the issue. ( Which I fully expect to have done from my prior test - temporary blacking interior with matte tape).
 
Intresting. I havent experienced any flares with the Novoflex on Nikon mount lenses ever. I don't have it with me so I cant say if its matte or polished.
 
Here is what we find.

We can shoot a lot of footage and never see it. Then when we shoot a high key scene such as on a white BG ( white table top surface) the issue rears its ugly head.
Keep in mind this is soft light and not a kick from anything.

Our contention is that all that "white" light travelling thru the lens then thru the adapter is getting bounced by the highly reflective surfaces onto the sensor. The soft light become spectral once it strikes the curved collar in the rear interior of the adapter.

We were even able to animate the flare by rotating a slit sized matte in front of the lens. We were also able to observe it strongy in a half black / half white scene.
 
You said it was something unique to the AF100 though -- why? Any stills lens used on any S35/35mm-sized sensor will be prone to the same issue, so any user of the F3, FS100, C300, etc should all face the same problem; on all of them the lens will be projecting an image much bigger than the sensor...
 
Shooter, thank you. When I had my AF100, I had observed this when there was a lot of light in front of the camera. I had used the same lens on my 7D and never had the problem, and for a long time wondered what it could be.

I've also noticed the problem on my FS100 in the same scenarios. Both adapters have shiny internals. This makes a lot of sense. I look forward to seeing how the AF100 performs with your newly coated adapters, and hopefully, solves the mystery I had as well.

As you observe, I didn't see it all the time, but when I did, for me anyways, it really washed out the image and I couldn't get rid of it either with any flags.

Such a simple solution as well.
 
Erik Naso said:
Intresting. I havent experienced any flares with the Novoflex on Nikon mount lenses ever. I don't have it with me so I cant say if its matte or polished.
Click to expand...

I just looked at my Novoflex. It's flat black and finely "ribbed" in the interior. I wonder if they considered this in their design. I too have not noticed any unexpected flaring with my Nikon lenses. Nice catch, Shooter.
 
Barry_Green said:
You said it was something unique to the AF100 though -- why? Any stills lens used on any S35/35mm-sized sensor will be prone to the same issue, so any user of the F3, FS100, C300, etc should all face the same problem; on all of them the lens will be projecting an image much bigger than the sensor...
Click to expand...

Thats correct Barry ...but I was responding to a post that said it can only be the lens and I was giving a hint to him that maybe something else could be the cause.

I also did say...

Lenses generally have it well under control...but the unique factor of ADAPTERS on AF100s ( and the like) have not dealt with the issue!
Click to expand...

Subsequently appears that some adapter manufacturers have considered the potential of the issue eg Novoflex.

BTW: Have you ever noticed any flare issue Barry.
 
You must log in or register to reply here.
Back
Top