Would R mount lens be compatible to M mount with adapter ?
herion
•
Contributing Member
•
Posts: 756
Re: Would R mount lens be compatible to M mount with adapter ?
CQui wrote:
herion wrote:
...
2. Operate on a "speedbooster" principal with some type of lens inside of the adapter. Since we know the adapter has to be thicker than 2mm, the lens within the adapter has to act the same way as eyeglasses do in correcting nearsightedness - the focal point of the R lens needs to be "pulled back" to the sensor of the M by approximately 20mm - (width of adapter) - 2mm
...
Why a speed booster at all ?
The op is about an adapter in the way the EF to M works, nothing about speedbooster.
2mm is not much for an adapter but I don't think it is impossible
Not a "speedbooster" per se, but the construction of having a lens in the middle of the adapter. This wouldn't expand the image as a speedboster would, but simply shift the focus point to the focal plane of the M.
Canon EOS 30D
Canon EOS 40D
Canon EF-S 10-18mm F4.5–5.6 IS STM
Tamron SP 45mm F1.8 Di VC USD
Tamron SP 85mm F1.8 Di VC USD
+2 more
|
Post
(hide subjects)
|
Posted by
|
When
|
|
|
|
|
Sep 11, 2018
|
|
|
|
|
Sep 11, 2018
|
|
|
|
|
Sep 30, 2018
|
|
|
|
|
Sep 30, 2018
|
|
|
|
|
Sep 30, 2018
|
|
|
|
|
Sep 11, 2018
|
|
|
|
|
Sep 30, 2018
|
|
|
|
|
Sep 30, 2018
|
|
|
|
|
Sep 30, 2018
|
|
|
|
|
Sep 30, 2018
|
1 |
|
|
|
Sep 30, 2018
|
|
|
|
|
Sep 30, 2018
|
|
|
|
|
Oct 1, 2018
|
|
Keyboard shortcuts:
FForum
PPrevious
NNext
WNext unread
UUpvote
SSubscribe
RReply
QQuote
BBookmark
MMy threads
Color scheme?
Blue /
Yellow
|
|
|
|
|
Feb 22, 2023
|
Feb 13, 2023
|
Feb 11, 2023
|
Feb 11, 2023
|
Fujifilm's X-H2 is a high-resolution stills and video camera, that sits alongside the high-speed X-H2S at the pinnacle of the company's range of X-mount APS-C mirrorless cameras. We dug into what it does and what it means.
Holy Stone produces dozens of low-cost drone models aimed at consumers. We look at the HS710 and HS175D to see if they stack up to other sub-250g offerings. Are these secretly great or more like toys?
It's small, light, cheap and extremely wide but is it any good?
After weeks with a production Fujifilm X-T5, Chris and Jordan have some final thoughts.
Released only weeks apart, the Sony 50mm F1.4 GM and Sigma F1.4 DG DN Art are clear competitors. Which is the better buy?
Above $2500 cameras tend to become increasingly specialized, making it difficult to select a 'best' option. We case our eye over the options costing more than $2500 but less than $4000, to find the best all-rounder.
There are a lot of photo/video cameras that have found a role as B-cameras on professional film productions or even A-cameras for amateur and independent productions. We've combed through the options and selected our two favorite cameras in this class.
What’s the best camera for around $2000? These capable cameras should be solid and well-built, have both the speed and focus to capture fast action and offer professional-level image quality. In this buying guide we’ve rounded up all the current interchangeable lens cameras costing around $2000 and recommended the best.
Family moments are precious and sometimes you want to capture that time spent with loved ones or friends in better quality than your phone can manage. We've selected a group of cameras that are easy to keep with you, and that can adapt to take photos wherever and whenever something memorable happens.
What's the best camera for shooting sports and action? Fast continuous shooting, reliable autofocus and great battery life are just three of the most important factors. In this buying guide we've rounded-up several great cameras for shooting sports and action, and recommended the best.