Issue With CV15 and Coded Milich Adapter

[Val B]

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I have hand coded my new CV15 w/Milich adapter as a WATE. With the lens detection set to "On+UV/IR" the camera detects the lens just fine. However, if I set the lens detection to the "On" position, the lens is not detected.

 

Shouldn't the coding be detected with either of these two settings? Am I missing something?

 

Thanks, in advance, for any help with this.

[doubice]

Shouldn't the coding be detected with either of these two settings? Am I missing something?

 

 

Hi Val,

 

All's well..... That is how it is supposed to work. I feel the lens should be "detected" even without the UV/IR setting but,............

 

Jan

[Val B]

Thanks for the response. If the lens is not shown as detected in the "on" setting, does the firmware still make its non-IR, lens-specific adjustments to raw files for vignetting, etc?

 

Also, the menu to select the specific WATE focal length does not appear with the "On" setting. Does a Leica-coded WATE respond in this manner, ie., it shows as detected when "On - IR/UV" (w/subsequent focal length menu) is selected, and does not when "On" is selected?

 

Seems strange.

[jlm]

i have firmware 1.102 and found the following to be the basic mode of operation:

with the WATE and the 15mm, my coded adapter as WATE:

lens detection ON: FL selection menu does not appear, 18mm shows in exif file of the pic

lens detection ON + UV/IR: FL menu drops down, you select FL, and that selection will appear in the exif.

The driving concept is that vignetting correction between 16-21 is the same, however the cyan corner correction is FL dependent.

all that has been posted before.

 

I also found that after a few lens swaps, I could not get the selection to change from ON + UV/IR. everytime i would highlight that menu item, Set, arrow to ON, Set; and immediately get sent back to ON + UV/IR and the FL page. this happened several times with both the WATE and the 15. tried turning off lens detection, turning off camera, snapping a pic, removing and replacing lens, moving around and back in the menu. seemed stuck. after a while, damned if it didn't start working correctly.

 

ymmv

[marknorton]

Thanks for the response. If the lens is not shown as detected in the "on" setting, does the firmware still make its non-IR, lens-specific adjustments to raw files for vignetting, etc?

 

Also, the menu to select the specific WATE focal length does not appear with the "On" setting. Does a Leica-coded WATE respond in this manner, ie., it shows as detected when "On - IR/UV" (w/subsequent focal length menu) is selected, and does not when "On" is selected?

 

Seems strange.

 

Without UV IR selected, the camera does recognise the WATE and makes adjustments which are independent of the selected focal length. This was how they always hoped it would work. Add the IR filter and the adjustments now need to know the selected focal length which is why you see the sub-menu. It only appears when you have UV IR selected.

[Val B]

I appreciate the responses...thanks.

[Joe S]

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I also encountered the temporary inability to change the setting that John noted above. Mine also suddenly worked properly and it has not happened again.

 

My coded 15mm does not indicate focal length in exif data if I just have lens detection on. John indicates that it should indicate 18mm. It works fine if lens detection +UV/IR is selected and the WATE menu allows a lens selection.

[Val B]

My coded 15mm does not indicate focal length in exif data if I just have lens detection on. John indicates that it should indicate 18mm. It works fine if lens detection +UV/IR is selected and the WATE menu allows a lens selection.

 

 

Yes, that's exactly what I am experiencing. Does anyone know why we don't get the 18mm detection in the exif data? It makes me think the self-coding is not being recognized in the "on" setting and that the firmware corrections are not being applied to the raw file.

 

Can anyone shed any light on this?

 

Thanks...Val

[stunsworth]

I'm assuming that Leica have decided that the vignetting correction without a filter is the same for all three focal lengths, so there's no need to ask the user which focal length has been selected. Because the user doesn't input the focal length the camera doesn't know which to write to the Exif, so writes none.

 

With a filter the cyan drift probably changes according to focal length, so the question is still asked and the correct length can be written to the Exif.

[Val B]

Because the user doesn't input the focal length the camera doesn't know which to write to the Exif, so writes none.

 

Steve...John Milich, in one of the posts above, indicates that when the "On" position is selected, his camera writes the 18mm FL in the exif data, which to me indicates the camera has "recognized" the WATE coding. My camera is not doing the same. He also indicates he is using FW 1.102. I am running v. 1.107. Did the new version of the FW change things?

 

To me, the questions remain: Why does my camera recognize the WATE coding with the "On+IR/UV" selection (and write it in the exif data), and does not do the same when when "On" is selected? If it is not documenting it in the exif data, is the coding being detected and are the FW adjustments being applied to the raw files?

 

As an aside, I have only shot about 30 test frames with the cv15, coded Milich adapter and no IR/UV. The images look best when the "On" selection is picked. There has not been any noticeable vignetting or cyan shift (to my naked eye, in prints). So maybe this is all academic. But it would be nice to have the exif data and the confirmation that the coding is being recognized.

 

Thanks...Val

[jlm]

installed the new firmware; now when Lens detection ON is selected, there is no FL showing in the exif file. I'm guessing the vignetting correction is there, but they deleted the FL info in exif.

with UV/IR on, FL does show up.

[Joe S]

Glad to see that my experience is not unusual. Seems as though a correction for the next firmware is in order. What is the best way to communicate this to Leica? Through our "in house" beta testers?

[ho_co]

Joe & Val--

This has been handled several times in the forum. It has nothing to do with the CV15 or with the Milich adapter, but with the firmware's intended handling of the WATE.

 

With firmware 1.107 the EXIF is working as Leica intended with this lens; there is no reason to let them know that. This was one of the changes requested in improving the firmware after version 1.102. If you prefer to see "18mm" in the EXIF data, maybe you should reload 1.102 for the time being. Perhaps now for the next revision the pendulum will swing back to the way the WATE was previously handled.

 

Two posters have pointed out above the reasons for the change, but I'll summarize to the level of my understanding:

 

1) Using WATE with Lens Detection ON: Firmware recognizes lens and corrects for vignetting (same adjustment for all focal lengths). But it would be wrong to report that the lens was set at any particular focal length. Since the WATE can be set at 16mm, 18mm and 21mm, _if_ the firmware were to list any one, then it would be wrong two-thirds of the time.

 

2) Using WATE with Lens Detection ON + UV/IR: As above, firmware applies standard WATE vignetting correction. In addition, since cyan drift will vary according to focal length, firmware requests that you input focal length. Once you have done so, the EXIF data will list that focal length.

 

--HC