"lense striped flare"-ish issue

[Hahn]

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Hi, I got M-A in Aug 2020 and really enjoying shooting film. 

 

The thing is I found really interesting symptom with my 50mm cron v5 that with the strong lights (e.g. strong LED or reflected sunlight), negative gets "horizontal striped flare". 

I was wondering it was from the lense but it seems like it's shutter related. Is this well-known issue with film camera with shutter that moves horizontally or is this something else? 🤔

Obviously with normal light condition, I do not get this problem with my M-A, this striped light only comes with very strong light. 

 

Please let me know if you have similar experience! 

Cheers, 

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Edited March 4, 2021 by Hahn

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[frame-it]

and does this flaring show up with other lenses in strong bright light ?

[Hahn]

thanks actually that's a good question,  as it's what I am trying now... I recently tried different lenses (35 and 21 skopar) and I got the same problem with 21 skopar (only 1 shoot) 

Edited March 4, 2021 by Hahn

[Hahn]

this is a shot with my 21 skopar for your information! thanks

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[wizard]

This effect is based on the optical formula of any given lens. Some show this effect, others do not. And some people like the effect, others do not. 

Andy

[a.noctilux]

Those examples may be sunstars (a bit odd with this long branch though).

If I can I don't use any filter which tend to give some odd refections on light spots.

a short description of sunstars

or

Ph. Reeve for ...

 

if it's filter effect (if you use one)

and reflections on filter following

here

 

[250swb]

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I would ask does the flare happen if you hold the camera still? The first image in particular is largely affected by using a slow shutter speed and waving the camera around. Some of the other flare looks kind of normal for shooting into the light.

Edited March 4, 2021 by 250swb

[tgray]

Do you use filters on your lenses?  And if so, are they dirty?

[Hahn]

thanks for the comments!

- i saw some cinema lenses for film have these effects, wonder this is also common for 50 Cron as I have never seen this kind of examples.

- i guess it's probably not aperture related sunstars as some of them are taken with wide open. 

- for still shot i have never tried so i cannot answer. 

- this happens with both fast and slow shutter speeds (1/15-1000)

- my filter is best condition, used leica filter with super clean condition 

 

I guess strong lights with the horizontally moving shutter curtains make these things, but no clue.

 

[jankap]

During testing this I would take the filter off. It is of no use now.  It could be, that the edge of a shutter curtain is shining. The tree in the third picture also shows flare. And please do not crop test pictures.

Edited March 10, 2021 by jankap

[a.noctilux]

Hahn,

I'm not sure, but I would try without any filter.

As side note, as I said before, filter (the best, most expensive/multi-coated, cleanest) can behave strangely in my long film/digital use.

Even without filter, some lenses (with no filter) can behave strangely with light spots.

Edited March 10, 2021 by a.noctilux