wow...Letus Extreme and EX1 *FIXED* Sharp as a tac....

Kholi said:
Dude. Hien is the creator of the Extreme and letus Flip.

I mean, it's one thing when I tell you all this same information and you REFUSE TO LISTEN, it's another when you question the creator.

Give it a rest. It won't work. Wait for Wayne to make one.
Click to expand...
He said it wouldn't work with the SGPRO because you can't screw it in (which makes me think if you find a way to screw it, it would work) but he said nothing about it not working if you have the letus flip on the SGPRO,( which would give the SGPRO the same back end as the Extreme making the achromat fit.) So I just asked.
 
Last edited by a moderator:
Mediacre said:
DUDE, he said it wouldn't work with the SGPRO because you can't screw it in (which makes me think if you find a way to screw it, it would work) but he said nothing about it not working if you have the letus flip on the SGPRO,( which would give the SGPRO the same back end as the Extreme making the achromat fit.) So I just asked. Chill!
Click to expand...
Extreme doesn't use the Letus Flip. Extreme has it's own, integrated flip. Though the flip portion are identical optically, they are different mechanically. The thread for the achromat holder are different, that's why I said it would not screw in.
 
Kholi said:
Give it a rest. It won't work. Wait for Wayne to make one.
Click to expand...

The problem you have is the flip is made for Wayne by Letus, so any fix for it would really need to come from Letus. That would require Wayne to commission the Le Brothers to do it. So I doubt it will come anytime soon!
 
Hien

Slightly off topic but since we're here anyway, is it possible (or advisable) to grind out a little of the achromat holder ring where it fits the Extreme, to allow the EX1 to center the LEx GG image properly?
(i.e. increase the clearance slightly on one side by grinding a larger curve into the mounting ring with a Dremel or similar, to allow for a more eccentric mounting of the ring?)

I'd think it would only be a matter of a millimeter or two more off-center than it can be at the moment, which is around half a millimeter.
Then the set screws would still be able to tighten it and one could then (finally) center the camcorder close to the optical center of the LEx. and therefore use more of the GG image.

What say you?
 
I have found that I am not aligned properly onto the GG with my EX1. Side to side I am OK, but when zooming in the center of the EX1 lens is between a half and two thirds up the GG on the Letus EX.

Thoughts to solve it?
 
Yeah, Steve, that's the problem I was writing about.
I've posted about this before, mainly on the Letus forums, and I'm waiting to see what works will do before I try alternatives.
The problem with the EX1 and a few other cameras is that their imagers aren't set dead center relative to the axis of their lenses. It isn't mentioned much but it's there.
Letus forum and others have said that it isn't the Letus that has the problem, it's perfectly centered within itself - however, the issue seems to be not whose problem it is or where the blame lies, but how to solve it.
Tell you one thing, though -- it isn't going to go away all by itself.
 
Steve C
Yes, I've seen your site. If the discrepancy were that small I'd not be mentioning it at all. On the FX7 it's way, way off, more like 20-25% vertical frame cropping than the approx 5-8% we're seeing in your lineup.
 
The mankers of the adapters do not and can not test all the camera combinations. So the end users, must get the right combo, set-up to get the proper results. We are the beta testers to define the correct cameras, for use with these adapters.
 
After seeing The Assassination of Jesse James, Philip Bloom and Stevec's lens baby work, I am defiantly in the market for one.

The LEX fix looks impeccable.
 
Yeah, the bleeding edge of technology, I know. And I do love the images too, don't get me wrong!
See you on the silver screen!
 
philip bloom said:
Saying you then have a spinner Letus just because you have a letus flip is silly! it's still an Sgpro for all the plusses and minuses that brings!
Click to expand...

No idea what minuses you are talking about. Not sure with the EX1 as I don't have one. But the Sgpro has no real minuses with most cameras I have used it with. Apart from the Letus Extreme, which I don't know, the Sgpro is the sharpest and brightest adapter I have ever used. Also as it is a spinner, I can stop my lens down or use higher shooting speeds which vibrating adapters like the Letus and Brevis normally don't allow.

hienle said:
Extreme doesn't use the Letus Flip. Extreme has it's own, integrated flip. Though the flip portion are identical optically, they are different mechanically. The thread for the achromat holder are different, that's why I said it would not screw in.
Click to expand...
So if the problem is only mechanical, it should be easy to solve with a good custom machine job. I hear you Hien. You don't want to say your fix will work with the competition too. It's understandable.
 
hi

just got my ex1 kit. im trying to screw in the achromat but where the old achromat screwed in all the way I cant get the ex1 acrhromat to screw in more than a few rounds. It leaves a 3-4mm gap between the letus and the new achromat ring. Is it supposed to be this way? Ive really tried hard and Im afraid to use any tools to turn it further.

Sami
 
Im afraid to put in on the EX1 cause it looks like the achromat glass could touch the EX1 lens surface. And if I screw it on like this it could very well break something. Ill attach two pictures here. If you can compare it to your own EX1 kit achromat Id really appreaciate.

I just cant screw it any further no matter how hard I try. It only seems to turn 2 rounds and then it gets stuck. The previous achromat screws in all the way.
 

Attachments

  • DSC02618.JPG
    DSC02618.JPG
    136.3 KB · Views: 0
  • DSC02619.JPG
    DSC02619.JPG
    179.9 KB · Views: 0
You mean the LEX achromat cover that screws to the ex1-kit-77mm-thread? It wont go on it because the achromat is on the way. Hmmm... I really cant get my head around if Im doing something wrong but it should be really simple. And I have no problems with the old achromat.
 
Oh man! I got some rubber gloves and got it screwed in with real brute force. That is never gonna come off its soooo tight.

thanks for your help!

Sami
 
It took me a few tries to get it to seat, (screw all the way in).

DO this. Screw it in until it stops, then unscrew a bit, then screw in again a bit more. keep working it this way until it makes it way all the way in. You will be working the threads and getting it to wear in. You will NOT be able to do it all in one go. If you have ever tapped a screw hole you have to go in a bit than back out a bit, go in a bit back out a bit.

Make sure that when performing this you remove it completly and air blow on the threads to clear any debris that may be getting into the threads as you work it in.

Regards
Steve
BLOG: For the Letus EX http://web.mac.com/stevecahill/Steve_Cahills_Blog/Blog/Blog.html
 
Wow, you really can see the sharpness increase A LOT with the ex1 kit! The peaking just fills the whole frame and I cant see anything else but blue, gotta turn that down a bit :)

How much do people usually zoom in with the ex1 kit achromat?

Phil: You mentioned that the focus position is at the edge of the EX1 so it kinda locks in? Did I misunderstand or what did you mean by this? My focus point is a couple of millimeters from the lock focus.

Sami
 
You must log in or register to reply here.
Back
Top