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Re: [OM] Trouble-Bubble adapters

Subject: Re: [OM] Trouble-Bubble adapters
From: om3ti@xxxxxxxx
Date: Mon, 21 Aug 2023 08:44:00 -0700

On 2023-08-21 08:06, om3ti@xxxxxxxx wrote:

On 2023-08-20 13:50, usher99--- wrote:

Little Toil, No Trouble Moose writes:
I would buy the Fotasy Copper from your link. CF of 36 in. on a 100 mm lens is pretty good; then I'd use an achromatic C-U lens for closer. The Oly iS/L Lens A-Macro H.Q. Converter f=40cm would screw right in.

Thanks for commenting. It does have the adjustment screws and the price is right. The issue is the lens itself---"If you need an adapter ring to use this lens, it is recommended to use an adapter with a centerline adjustment function."
100mm f2.8 Bubble Bokeh - TTArtisan

Scroll down a bit.
Good observation on the Oly iS/L converter--not one I have. I have a fair number of achromatic CU diopters but not that one. Your stable is impressive. Your post prompted me to do a quick calculation. With the CF of 0.9m, would have a max mag of about 1:7. 30mm of extension would get quite close to 1:2. My worry with the CU diopter is it might pop the bubbles. My experience has been the CU diopter seems to really smooth out bokeh, at least in general. Fotodiox seems to have a helicoid macro adapter, but it is half the cost of the lens. Also, not sure it is "adjustable", but it does have screws. The lens seems to be out of stock for at least a month. It is pretty soft wide with very "bad" corners open but then that is not the really the point.
Still toiling, Mike

I have the Fotodiox adapter for Sony E and the macro extension is more than most. Probably my most used adapter. The Vello seems almost identical and I often wonder if made by the same factory. I have never had an issue with the scales not being on top.

Pre-order lens now at https://www.bhphotovideo.com/c/product/1780880-REG/7artisans_photoelectric_f10028_b_m42_100mm_f_2_8_lens_for.html

Does not show a lens hood with the lens, 49mm.



htthttps://www.kentfaith.com/sone-nex-e-mount-adapter?filter=175 [1]

These seems to have the adjustment capability. They just don't have a helicoid, which I consider essential. Most of my alt lens photos are not taken at infinity.


[1] https://www.kentfaith.com/KF06.498_high-precision-lens-mount-adapter-for-m42-series-lens-to-sony-e-series-mount-camera-m42-nex-iv-pro
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