11-29-2018 02:14 PM
I currently using a t2i Canon 18 mp crop sensor camera, According to Canon, when EF-S lenses are used on the EOS R camera the camera "will automatically produce cropped 11.6-megapixel images that match the smaller image circle of EF-S optics." So a 30mp camera effectively is now 11.6mp, much less than what I have with my current set up. I am looking to move to full frame so the EOS R seemed to be the way to go until I hit this stumbling block. I can't afford to buy both the camera and new lenses at the same time but plan to upgrade lenses slowly as budget permits. Is this something I should be concerned about or will having a better sensor and newer technologies make up for the loss in megapixels?
04-21-2020 05:52 AM - edited 04-21-2020 05:57 AM
I know that aperture values have nothing to do with the type of lens mount 😂
I was referring to the fact that the circuits of teleconverters (or speedboosters) act like a middle man, so the camera couldn't identify whether the lens attached is an ef lens or ef-s lens.
There is no middle man in an extension tube or in a reverse mount adapters, hence the camera will identify whether the lens attached is an ef lens or ef-s lens. 😉
i'm afraid a lens like 50mm won't be as good as a wider lens like 18mm in lens reverse situation.
I'll show you some results.
this is the maximum magnification of a canon 100mm macro lens (Not Reversed 1:1 magnification)
this is 50mm f/1.8 Full frame lens reversed ( wich was your sujestion)
this is 18-55mm EF-S lens reversed @18mm
so, imagine the result of 10-18mm EF-S lens reversed @ 10mm
04-20-2020 10:47 AM
05/31/2023: New firmware updates are available.
EOS R6 Mark II - Version 1.1.2
05/18/2023: New firmware updates are available.
EOS Rebel T100 - Version 1.1.0
EOS 5D Mark IV - Version 1.4.0
EOS 6D Mark II - Version 1.2.0
PowerShot Elph 360HS - Version 22.214.171.124
PowerShot SX420 IS - Version 126.96.36.199
PowerShot 620 HS - Version 188.8.131.52
PowerShot SX720 HS - Version 184.108.40.206
PowerShot G1X Mark III - Version 220.127.116.11
PowerShot G7X Mark II - Version 18.104.22.168
PowerShot G9X Mark II - Version 22.214.171.124
04/20/2023: New firmware version 1.4.1 is available for EOS R3
03/30/2023: New firmware updates are available.
EOS 1DX Mark III- Version 1.7.1
Speedlite EL-1 - Version 1.0.2
03/30/2023: Product Advisory for EF50 F1.2 L USM
03/30/2023: Product Advisory for EOS R10
2/07/2023: New product announcements!EOS R8 EOS R50RF-S55-210mm F5-7.1 IS STMRF24-50mm F4.5-6.3 IS STMRF15-30mm F4.5-6.3 IS STM
Canon U.S.A Inc. All Rights Reserved. Reproduction in whole or part without permission is prohibited.