Tonki-M Posted December 17, 2013 Share #1  Posted December 17, 2013 Advertisement (gone after registration) i've recently acquired b+w big stopper E46 to be used with my E46 lenses, and just yesterday, i actually had the chance to use it. What happened is there's a strong flare type (white vignette) at the bottom of every images when i use the big stopper on my 21 Super-Elmar. At first, i thought it was flare from a bright sunlight hitting at just the right angle, so i went on ahead and did a wall test in a closed room and sure enough the same flare vignette thing is still present. i've never encountered this type of vignette, so i thought it was a faulty filter, but just by turning it i came to realize that it is not the case. Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members!  a little later still in a closed room, i put this big stopper on my 50lux Asph to see if it will exhibit the same effect. no such effect is present when used with the 50lux.   Anyone with experience with the big stopper and wide angle lens?..especially this combo. Thank You in advance. Link to post Share on other sites Simply register for free here – We are always happy to welcome new members!  a little later still in a closed room, i put this big stopper on my 50lux Asph to see if it will exhibit the same effect. no such effect is present when used with the 50lux.   Anyone with experience with the big stopper and wide angle lens?..especially this combo. Thank You in advance. ' data-webShareUrl='https://www.l-camera-forum.com/topic/218578-concerning-big-stopper-and-21-super-elmar/?do=findComment&comment=2489204'>More sharing options...
Advertisement Posted December 17, 2013 Posted December 17, 2013 Hi Tonki-M, Take a look here Concerning Big Stopper and 21 Super-Elmar. I'm sure you'll find what you were looking for!
rirakuma Posted December 17, 2013 Share #2 Â Posted December 17, 2013 Interesting, I just got myself a 21 sem and I hope it won't have this problem. I'll post some results in a few days. Link to post Share on other sites More sharing options...
Tonki-M Posted December 17, 2013 Author Share #3 Â Posted December 17, 2013 Interesting, I just got myself a 21 sem and I hope it won't have this problem. I'll post some results in a few days. Â the lens is in perfect order and is a wonderful lens. My preferred travel companion. The issue only comes up when i put on the E46 Big Stopper. Even when i put on the 3 stop B+W E46 filter, everything is great. I'm just rather stump why this (whatever this is) happens and if so why only on one of the corners Link to post Share on other sites More sharing options...
rirakuma Posted December 17, 2013 Share #4 Â Posted December 17, 2013 Well I don't really know what the cause is and I'm not even sure if its light leak, they usually give off a purple cast. If the filter works fine on your other lenses then it must be something to do with the 21sem. Link to post Share on other sites More sharing options...
Bill W Posted December 17, 2013 Share #5 Â Posted December 17, 2013 It has to be light reflected off the front element and hitting the edge of the filter rim inside. I am sure that when you screw the filter on it tightens to the same place. Of course I may not have a clue what I am talking about. Link to post Share on other sites More sharing options...
250swb Posted December 18, 2013 Share #6 Â Posted December 18, 2013 It's a light leak that also shows up in pictures made with the M9 or MM. It has been covered in discussions on the M9 forum. It isn't lens specific. Â Only long exposures show it up and it comes from the top of the lens mount near to where the focus cam cutout is on the lens. It can be avoided by wrapping a baffle around the lens ( some people use a hair scrunchy) or even just shading it with your hand. Â Steve Link to post Share on other sites More sharing options...
250swb Posted December 18, 2013 Share #7  Posted December 18, 2013 Advertisement (gone after registration) I found the thread about the light leak problem  http://www.l-camera-forum.com/leica-forum/leica-m9-forum/300680-monochrom-long-exposure-issue.html  probably something unnoticed until 'Big Stoppers' started to be used more widely.   Steve Link to post Share on other sites More sharing options...
Bill W Posted December 18, 2013 Share #8 Â Posted December 18, 2013 I remember that thread now. Link to post Share on other sites More sharing options...
Tonki-M Posted December 18, 2013 Author Share #9  Posted December 18, 2013 I found the thread about the light leak problem http://www.l-camera-forum.com/leica-forum/leica-m9-forum/300680-monochrom-long-exposure-issue.html  probably something unnoticed until 'Big Stoppers' started to be used more widely.   Steve  Steve, many thanks for referring me to that thread. I had no knowledge of it. After reading it, i've been enlightened. As for my case, it is indeed a light leak! The leak actually came from the mount lock in my case. At the button you press to mount and unmount, if you inspect closely, there is a gap there. After many tests of torching that hole, so far only my 21 SEM has this problem!...interesting indeed. My 50 lux and my 35 lux fle is safe. A normal phenomenon on the 21 SEM...? or is it random? Link to post Share on other sites More sharing options...
algrove Posted December 19, 2013 Share #10 Â Posted December 19, 2013 I remember it occurring on the Noctilux also. Link to post Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.