What happen if my lens are not coded?

[taboyip]

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All my lens are not yet coded as it take over a month to get them back. But it is necessary to have them coded? In what part it will not function correctly?

[bradreiman]

you need coding with filters if your lens is less than 35mm FOV. the coding assists in applying correction to the cyan corners produced by ir filters on wide lenses...b

[35mmSummicron]

the 6bit coding alone corrects for vignetting due to the lenses being so close to the sensor.

 

i have noticed a difference with even a 50mm focal length.

 

 

the UV/IR filters require correction from and including 35mm and wider, as they cast cyan corners. however in order to correct for them in-camera, you need firmware 1.102 and coded lenses, as the camera will automatically figure out how much correction needs to be done with your mounted lens.

 

hope this helps.

 

/a

[lars_bergquist]

With 1.102 and the coding recognition set to 'on with filter', what happens if I mount a) an uncoded lens with filter, and an uncoded lens without a filter?

 

In other words, do we need to change the setting whenever we change to an uncoded lens?

 

The old man from the Age of the Yellow Filter

[roccoriley]

you need coding with filters if your lens is less than 35mm FOV. the coding assists in applying correction to the cyan corners produced by ir filters on wide lenses...b

 

So then; do I not need to have my 75mm f2 lens coded?

[jaapv]

Only if you want to see the focal length displayed in Exif.

[gman]

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I really like having the focal length displayed in the EXIF file. I'm finding it very useful for comparing lenses and trying to determine if I'm having back-focus issues with particular lenses and/or just having aging eye syndrome.

 

 

jeff

[doug_m]

What do other forum members think about the need to have a 50 f1.4 ASPH lens coded?

I don't care about the EXIF data- all I care about is photo quality.

 

Thanks.

[sean_reid]

you need coding with filters if your lens is less than 35mm FOV. the coding assists in applying correction to the cyan corners produced by ir filters on wide lenses...b

 

Hi Brad,

 

Actually, 35 mm or less (inclusive). I've tested to confirm.

 

Cheers,

 

Sean

[sean_reid]

So then; do I not need to have my 75mm f2 lens coded?

 

It's nice to have 50 mm, and longer, lenses coded but it isn't functionally necessary for color work with the filters. There is some cyan drift with 50 mm lenses (when using an IR cut filter) but its very mild.

 

Cheers,

 

Sean