Stevejack Posted January 9 Share #1 Posted January 9 (edited) Advertisement (gone after registration) The specs of the Visoflex 2 state that it gives 100% frame coverage, but I was out this morning with a 28mm Elmarit and I framed up a shot to exclude some branches right at the edge of frame. In the viewfinder, the frame was clean - but in playback the branches were showing on the edge of the frame. It's funny because I haven't used the M11 with a tripod before and there are times where I swear I had it exactly right in the viewfinder but the final frame was unclean on the edges... I thought it was just me twitching as I hit the shutter but now I know. So I thought.. ok the M11 must be applying lens correction to the embedded jpg preview in the raw file, but when I imported the DNG into Lightroom and disabled profile corrections, it made adjustments but didn't go back to the image I had originally framed. I remember reading something I while back about corrections being imbedded into the DNG and being unable to disable them... is this what's happening? Or is the Visoflex really not showing 100% of the frame? Edited January 9 by Stevejack Link to post Share on other sites More sharing options...
Advertisement Posted January 9 Posted January 9 Hi Stevejack, Take a look here Visoflex 2 not showing 100% frame coverage in viewfinder. I'm sure you'll find what you were looking for!
jaapv Posted January 9 Share #2 Posted January 9 If the lens is corrected digitally like many lenses, especially wideangles, are from all brands it is quite normal for an uncorrected image to have some pixels to play with at the edges for distortion correction and quite logical for the EVF to show the framing of the corrected image. The cameras of the Q series are a pronounced example; the EVF and corrected output have an AOV of a 28 mm lens but the sensor captures pixels for a 26 mm one. Link to post Share on other sites More sharing options...
Stevejack Posted January 9 Author Share #3 Posted January 9 15 minutes ago, jaapv said: If the lens is corrected digitally like many lenses, especially wideangles, are from all brands it is quite normal for an uncorrected image to have some pixels to play with at the edges for distortion correction and quite logical for the EVF to show the framing of the corrected image. The cameras of the Q series are a pronounced example; the EVF and corrected output have an AOV of a 28 mm lens but the sensor captures pixels for a 26 mm one. Hmm. I didn't think the M did anything if lens detection was turned off. Seems a bit strange, it's either reading the code on the lens and still applying some form of correction for wide angle ...or the visoflex isn't showing me the full image. Link to post Share on other sites More sharing options...
jaapv Posted January 9 Share #4 Posted January 9 If lens detection is turned off in the camera it should not correct, However if you turn off the profile in LR and the camera lens detection not, the camera will still embed the corrections in the DNG and apply them in the camera software. Link to post Share on other sites More sharing options...
Stevejack Posted January 9 Author Share #5 Posted January 9 (edited) That was my assumption too, so I just ran some tests. When lens detection is on in camera: There is a difference between visoflex and playback framing (the visoflex is a cropped view of the final recorded image). In lightroom, checking the profile corrections tickbox does make adjustments to the image but does not affect framing in the same way (i.e. the image isn't cropped in all around the edges). When lens detection is off in camera: There is still a difference between visoflex and playback framing, with the visoflex being a cropped view of the recorded image). In lightroom, checking the profile corrections tickbox does nothing.. but the recorded image is still the wider view which wasn't visible in the visoflex when the capture was made. In both cases, the visoflex displays only a cropped live-view version of the actual recorded image. And just now testing things, looking on the back of the camera.... the live view is cropped too. It's not a visoflex issue but a live view issue. **edit: on closer examination the two sides of the frame are what's being cropped, not the top and bottom of the frame **edit: tested with a voigtlander 35mm lens, same deal: the edges are cropped off in live-view in the same way. Edited January 9 by Stevejack Link to post Share on other sites More sharing options...
lct Posted January 9 Share #6 Posted January 9 I have no experience with LR but i would check that perspective control is off. Link to post Share on other sites More sharing options...
Stevejack Posted January 9 Author Share #7 Posted January 9 (edited) Advertisement (gone after registration) 17 minutes ago, lct said: I have no experience with LR but i would check that perspective control is off. Yes perspective control is off. I generally have most of those things disabled and I've been looking to see if maybe something similar is switched on by mistake. It's definitely a live-view issue not a visoflex issue, and seems to be apparent on different lenses (though I can't test the rest until tonight). I'm also just in the process of updating from 2.1.X to 2.2.0 so we'll see if that makes a difference. **Edit: no difference on latest firmware Edited January 9 by Stevejack Link to post Share on other sites More sharing options...
Smogg Posted January 9 Share #8 Posted January 9 Visoflex stabilizes the image using digital correction, so the frame edges may be slightly inaccurate. 1 Link to post Share on other sites More sharing options...
Stevejack Posted January 9 Author Share #9 Posted January 9 Just now, Smogg said: Visoflex stabilizes the image using digital correction, so the frame edges may be slightly inaccurate. Ahh interesting. I'm not sure this is the case here though as it's only the sides being cut off, not the vertical. In any case is there a way to turn this live-view stabilization off? Especially for tripod work? Link to post Share on other sites More sharing options...
Smogg Posted January 9 Share #10 Posted January 9 1 minute ago, Stevejack said: Ahh interesting. I'm not sure this is the case here though as it's only the sides being cut off, not the vertical. In any case is there a way to turn this live-view stabilization off? Especially for tripod work? I don't think this feature can be turned off. 1 Link to post Share on other sites More sharing options...
lct Posted January 9 Share #11 Posted January 9 Never happened to me but i would do a factory reset and see what happens. Link to post Share on other sites More sharing options...
Sandokan Posted January 9 Share #12 Posted January 9 3 hours ago, Smogg said: Visoflex stabilizes the image using digital correction, so the frame edges may be slightly inaccurate. Can you point me to the literature that says that? The M11 does not have stabilization and it is quite a complicated feature that would be hard to fit in an eyepiece. Not impossible I guess. When attaching a 600mm lens to the SL3, you can see the effect of turning stabilization on and off, but on the M11-P with Visoflex, there is nothing stable about the image - at least on my system. Link to post Share on other sites More sharing options...
Smogg Posted January 9 Share #13 Posted January 9 (edited) 42 minutes ago, Sandokan said: Can you point me to the literature that says that? The M11 does not have stabilization and it is quite a complicated feature that would be hard to fit in an eyepiece. Not impossible I guess. When attaching a 600mm lens to the SL3, you can see the effect of turning stabilization on and off, but on the M11-P with Visoflex, there is nothing stable about the image - at least on my system. Key Specifications of M11 60MP BSI CMOS sensor with dual gain design Multi-field (matrix) light metering ISO 64 - 50,000 Three Raw resolution options (60MP, 36MP, 18MP) SD card accessible from battery compartment (no removable base plate) 64Gb of internal memory Exposures up to 1 hour, e-shutter down to 1/16,000 sec Live view stabilization (digital shake correction of preview image) Compatible with Visoflex II 3.68M-dot tilting accessory EVF Image stabilization occurs not only in the EVF, but also on the external screen. Edited January 9 by Smogg 1 Link to post Share on other sites More sharing options...
Stevejack Posted January 9 Author Share #14 Posted January 9 (edited) ** sorry double post Edited January 9 by Stevejack Link to post Share on other sites More sharing options...
Stevejack Posted January 9 Author Share #15 Posted January 9 10 minutes ago, Smogg said: Live view stabilization (digital shake correction of preview image) It might just be a stabilized view when magnified? Link to post Share on other sites More sharing options...
Smogg Posted January 9 Share #16 Posted January 9 3 minutes ago, Stevejack said: It might just be a stabilized view when magnified? I haven't looked into the nuances of when stabilization is enabled. But if there is digital stabilization, the image boundaries will inevitably narrow a little. After you mentioned it, I assumed that stabilization is the reason for this. 1 Link to post Share on other sites More sharing options...
Sandokan Posted January 9 Share #17 Posted January 9 15 hours ago, Smogg said: Key Specifications of M11 ... Live view stabilization (digital shake correction of preview image) Compatible with Visoflex II 3.68M-dot tilting accessory EVF Image stabilization occurs not only in the EVF, but also on the external screen. Thank you, I did not know that. 1 Link to post Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now