DV Info Net - JVC HD 201 and 35mm adaptors

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- - JVC HD 201 and 35mm adaptors (https://www.dvinfo.net/forum/jvc-gy-hd-series-camera-systems/85994-jvc-hd-201-35mm-adaptors.html)

Quote:

Originally Posted by Chad Terpstra (Post 626262)

Definitely the later - suffers under certain circumstances. Like I said that was the worst I've experienced (and on one of my first shoots too). The best thing you can do is calibrate the camera and test test test. I haven't found any noise unacceptable since then. When using the stock lens especially there are boundaries of acceptable sharpness and color qualities (the subtler of which I'm still figuring out). It can be VERY sharp if your lens is finely tuned.

Here are a few good grabs to help encourage you. It's a great camera and I would guess a killer combo with the Mini35!

(BTW, the "HollandHome" grab does exhibit some CA on the glasses and hair. Shouldn't be a problem if you use something other than the stock lens. The average person doesn't notice anyway.)

hi
very great pictures ! is that from a HD200 ?
i don't see any noise at all ! what settings did you used to achieve this ?

i don't really understand why does dark areas produce noise... why don't the camera take it as is that's all ? :D

That was from an HD100 with the PT3 settings using Standard gamma. I don't know why the noise is there sometimes. But I do know that if you expose well (above 50IRE) that you will get cleaner images. But sometimes it has to be dark and I guess that's when you roll the dice. ;-)

This is great info to hear about. So was there a total tally number of F stops of light lost with the adapter and such?

Thanks Chad for the updates!

Tony B.

Roy,
I've rated my HD100 + Brevis + 2.8 lens at 125 ASA.

I include the prime lens in there because I almost always leave it at 2.8 so it's more or less a fixed setting and I adjust the stock lens iris.

I've read that the JVC alone is about 320ASA which would make the adapter + lens a stop and a half slower.

One interesting note is that I have never gained any real amount of light by opening the prime lens up to even a 1.2. In my experience it's the same whether you're at a 1.4 or 2.8 with the Brevis. Curious I know, but I wonder what others have experienced with this or other adapters.

Quote:

Originally Posted by Chad Terpstra (Post 735944)

that's odd Chad. I definately find a difference with that wide range of stops. Also with the cf3 anything over f1.8 and i get that static grain.