1 or 2 questions re: Ex-1 and 35mm adapters

andrew00

Well-known member
Hi gents,

So I'm looking at upgrading from my DVX and like the look of the EX-1, esp it's low light performance. A shoot many types of projects, but one is live music in clubs where I often can't control the lighting. I hate interlaced footage, so the combo of HD, 1080P and good low light performance is attractive to me.

That being said, I do have one or two questions, if you would be so kind:

1) I've been looking at the posts here and some have raised issues w/ the EX and panning, I've looked at the odd video and I can see what they mean. Then I looked at Philip Bloom's amazing footage and don't notice such things, I think he even wrote that he only experienced this on, I think it was a high shutter/whip pan combo or something.

Potentially I'll be filming in clubs and on the streets with multiple musicians moving, playing their instruments, be it on stage or having to follow them through the streets, I'm weary about panning issues there.

2) Rolling shutter & flashes - I've seen the odd wedding clip, and although live music often doesn't have flashes in such abundant quantities, they still do exist, and I was wondering if anyone had experience with low light/live music and this issue on the ex-1?

3) Onto 35mm adapters. I must admit, until the last few months, the extra expense of 35mm adapters/lenses was entirely beyond my budget, and as such I never really looked much into them, so I wonder if anyone could clear up the question for me here.

The way I see it is as thus: By getting a 35mm adapter, such as the Letus series that Philip Bloom loves, you are able to attach extra lenses, a feature typically associated with higher end cameras. The advantage of this visually is that you get the great images these lenses produce, and often other benefits like a low fstop. The difference can be large - I know when I stopped using the kit lense on my Pentax K10D DSLR and got a 50mm f1.4 prime lens the quality of image went astronomically higher.

What I don't understand is the following:

- Why 35mm lenses? Is it that many hq film camera lenses are 35mm, and as such with a 35mm adapter you can use these lenses, in essence that the market for lenses is in 35mm lenses, so that's the adapter you need?
- How does photography lenses fit into this? As I said above my DLR is a 50mm lens but that's the focal length thingy (Not technical at this, sorry!) not the type of mount, the mount is just, you know, Pentax!

What I'm getting at here is, if I were to get an EX-1 I'd want to get an adapter like the Letus etc, in which case I'd need lenses and I've been reading you guys talking about the lenses you have and they're often photographic lenses you can buy for your DSLR's. My question is do all photographic lenses fit or is it a certain type or what?

Looking at the UV filter I use for my DSLR I can see that it's for a 52mm lens, i.e. the lenses that natively fit my DSLR must be 52mm dircumference or something, and that the video lenses are naturally bigger.

Therefore is the point of the adapter to let you take these smaller, 52mm lenses, and have them still fit the full frame of your recording and look 'normal' etc? And is the benefit of this to open up to you the full range of high quality lenses you can buy that are typically made for photographers - i.e. all the zooms, primes etc that your heart can love - in essence, high quality glass.

I think I'm struggling to say why would you want 35mm lenses, what is it about them specifically they is 'better' (i.e. produces a really nice filming image).

- With this in mind, can the 35mm adapters take any lenses, or do they need specific mount ones - i.e. any Nikon mount lenses etc? I ask because this lady I'm seeing has a D80, I have a K10D, and how do I know what the camera can and can't take?

- Also, are rails used b/c of the weight of this lens, ensuring it doesn't get top heavy and ruin the shot/snap off from the camera?

- With the announcement of the EX3's removal lens - how does this affect the use of adapters? Do you still need to attach the adapter to the Fujinon lens or does it not 'replace' that lens and connect directly to the camera?

- Lastly, with these 35mm lenses, I'm assuming that none of them are automatic in the same way that the kit lens is - i.e. they're 100% manual, the camera can't focus them or anything.

- Oh and one more thing, how does the Fujinon lens compare with auto-focus to cameras like the DVX100A (my current camera)? I ask b/c part of filming the bands in the way that I do is following them on the streets playing their songs in urban environments. This means it's much easier to have things on auto as much as possible. The DVX in progressive (25P) is ok with auto focus, it can take a while I guess b/c of the fewer frames vs interlaced, decent enough to use certainly - how does the EX compare?

Thanks. I know I've asked a shed load of questions and I fully appreciate I won't necessarily get them all answered, but I thought I would anyway. Thank you in advance for any pearls of wisdom you might offer, I appreciate it!

a x
 
EX3 & B4 adaptor???

EX3 & B4 adaptor???

I'm still investigating a bit of this like yourself, but I'll try to answer some of your questions while adding one or two of my own.

Based upon a demo I saw at the Sony booth at NAB, the rolling shutter should not generally be an issue for you, unless you are often doing snap pans of surfaces that have regular vertical lines (chain link fences, picket fences, etc.)
Even then, you can still do a very nice pan, just a 1-2 second pan instead of a 0.1 second pan.

As for 35mm lenses, as I understand it you can pretty much use any type of fixed focal length lenses that you would use with a 35mm SLR camera. The thing to be aware of however is that some lens manucfacturers require different mounts, so you might end up having to pick a particular brand and stick with it.

My question is more related to the release of the EX3 and how a B4 adaptor might fit into that picture. I found this site which seems to have a 1/2" to B4 adaptor for a few hundred dollars: http://www.mtfservices.com/index.html

If I was to get that adaptor and use it with an EX3 & a prime lens, would there be any reason I would still need to use a Letus Extreme or Ultimate? I understand that the Extreme vibrates some glass & the Ultimate will rotate some glass and those actions help to average visual distortion across the lens, but how noticable is it to not have one of those if you're directly mounting the lens to the camera body?
 
Andrew,
I too am looking at the Letus units. I just got my EX1 this week and I had many of the same questions as you. One thing that I can't confirm (Philip?) is whether, in my case, the Nikon lenses needed are ONLY the full-frame film variety or if you can use any Nikon mount lenses. In the Nikon line, the DX series is optically designed to only generate an image circle big enough to cover a smaller format digital imaging chip and NOT the full-size chips of the Nikon D3 nor any of the film-based Nikons.

I"m primarily a still photographer so I have a lot of Nikon prime lenses as well as a few fast 2.8 zooms that I'd LOVE to use on my new EX1. So, no matter which lenses you use, be sure to find out if they create an image size necessary to fill the Letus (or similar) with enough image area for the EX1 to focus on. I"m hoping somebody here can clear this up for both of us.
 
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