zooming into Letus Ultimate ground glass

Ive been doing this with my SGpro since the day it arrived... I thought all adapters allowed you to do this...
 
Sweeet. Good way to show how one can benefit from zooming in on the ground glass. I remember when I discovered it I was quite pleased and still use it til today. Somethings that I discovered as well:

1. The Focus setting does actually change, at least with an HVX200A. It's only in small increments but for me, on a Carrion 720p monitor and on a 42" 1080p LCD I could see the difference clearly. Those are my eyes, though and I do try to eck out as much sharpness as possible because the HVX already lacks in that area.

On an HVX200A my widest zoom is 25.6mm and the focus number reads 2.89~2.92. At 35mm Equivalent FOV, 31.8mm it's 2.89 on the dot. At 55.0mm it's 2.85 and below. Now how much this really matters is strictly opinion, I do my best to adhere to the focus settings to maximize sharpness. Took me a bit of time to figure out each, but now they're ingrained and useful.

2. Light Loss when dealing with Zoom should be factored/weighed. The question is when zoomed in on the EX-1 how much light does the lens loose or what does it become? I've heard two different stories: none and 2.8. Which one is accurate?

With an HVX200A zooming in all the way seems to negate the idea of using a zoom lens altogether UNLESS the taking lens is a 1.2 to 1.4. You eck out a bit more speed and at the same time you're digging into the center of the image. Generally at wider angles edge performance lacks, flare, etc etc. But, being so centered on the image cast unto the ground glass it's actually not that bad. The good thing with Spinners is that slower Zooms are an option.

I'm still quite amazed at how much light this thing gathers. With the 28-70 3.4~4.5 Zeiss Sonnar zoom on I can still get a useable image (minus Gain on) indoors with just apartment lights. That's pretty crazy altogether.

3. Camera Lens performance at wide and telephoto ranges. How bad does the EX-1 break up at Telephoto ranges and vice versa? How bad is the HVX200A in either situation. I personally can't answer both but it's just to be considered for those using the method on work that's important or could suffer from anomalies that weren't seen before hand.

That said...

For Docs, Music Videos and even Narrative this method can prove to be quite advantageous for tight time budgets. You could literally roll around with a 35/1.4 or 50/1.4 and a Telephoto lens, 85/1.4 or 135/2.8, and never have to worry about switching lenses often.

Thanks for sharing and taking the time to post that up.
 
one thing i've been curious about is how zooming in affects the FOV in comparison with moving to a longer 35mm lens while remaining at the HVX 35mm standard FOV equivalent zoom figure mentioned. so let's say your on an 85mm and push in on the HVX200 lens for example... is there a table or way to identify what equivalent focal length in 35mm you get to and how the FOV is altered?
 
Interesting.
And I can see how this can be useful for a lot of people, but I'm a bokeh-hoe so I'll rather just lift my camera closer :)
 
First, I was afraid of zooming into the ground glass of the LEX, but now I do it all the time since there seems to be no difference in sharpness or light loss.
It's like cheating a little zoom into your prime lenses.
 
I do this all the time with my micro x. It's great when you're on the run and need a tight shot but don't have the time to switch lenses.
 
by cheating some zoom in, what is lost (beyond no change in the depth of field)... FOV equivalents?
does a 135mm prime = an 85mm prime with a corresponding zoom into the ground glass image?
 
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