Wide Angle Conversion from 1/2" to 1/2" adaptor?

H

High1ander

Well-known member
I will be shooting a project in a forest, which means that sometimes maybe a tree will be in the way for a good composition and it is nice to be closer to the subject but still get lots in the frame, i.e using wide angle.

So the weapon of choice (only option) for camera is a F350, with a 1/2" sensor, and a lens that goes down to 5.5mm. I will do some tests tomorrow on a 4.4mm lens, but it is SD lens, and might not be good with resolution and sensitivity (haven't gotten any info on the F-stop).

I was wondering though how to calculate if I decide to use a 2/3" adapter and use another lens that is 4.5mm. Is it straight forward like "regular difference" between 1/2" and 2/3" or is there something else to take into account?


How much light does a lens adapter take? I know it is a matter of degree between brands on other cameras, but the rental company I am using doesn't say in its brochure what brand they are using (are there different brands for 1/2" to 2/3" for Sony's?) It seems like it just might be a step up ring or something like that since the price is only about 30$ and regular adapters are about 150-200 a day.
 
There is no light loss and there would be a magnification factor of 1.34mm. So your 4.5 mm would now be a 6.03mm lens. As for the SD, lens if it is a newer SD lens I would not worry, you could not tell difference, unless you tore apart image with editing software. So your basically back to your same 1/2 lens of 5.5mm, nothing gained...(if you already have a 5.5 1/2 lens)

For a EX-3 to 2/3 adapter with power (1900.00 item) rents here for 75 bucks. 150 to 200! That's a lot for a freaking adapter
 
Last edited:
Ok, good to hear.

The thing is that I don't get model numbers and stuff from the brochure, but I think it just isn't worth 150$ on a budget of about 1000$ to get a lens that isn't the same brand and quality as the one that will be used for 95% of the shots...

However, I thought that going from 1/2" to 2/3" with and adapter and then using a 2/3" lens at 4.5mm would give a lower value measured to 1/2", like 3.7mm something? Or am I missing something?
 
Your going to a larger format lens so the area of the image is larger than what you currently have.

Say you have a 4 x 6 photograph of a landscape (that's your 1/3 sensor). Now go print that picture on your printer. Now you have a copy of the same picture, but on 8 x 10 typing paper. ( that's your 2/3 lens) Now lay the picture in the center of the typing paper copy. Cut the typing paper copy around the photograph in the center. Remove what you cut. Now look at paper copy, that is what is happening, it looks like you zoomed into the image. Because that 2/3 lens is projecting for a lager image.
 
You must log in or register to reply here.
Back
Top