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Found 2 results

  1. orobas
    Ok.. so i have a A6400 which has an APS-C sensor.. I use a range of lenses of which include both full frame and crop sensor designed lenses.. I know using a full frame lens i get a crop zoom of 1.5x .. so for example my Sony FE 50mm becomes a 75mm, my Tamron 70-300mm f4.5-6.3 DI III RXD becomes a 105-450mm Now.. if i use a aps-c lens.. i get the exact mm yes ? ie.. if i use the Sigma 56mm f1.4 DC DN .. this IS a 56mm on my A6400 as the DC denotes the lens was made for APS-C sensors and it even has the aps-c cut out on the back of the lens. Do i read this right ? .. or do i still have to put a x1.5 35mm zoom in effect.. so my 56 becomes an 84? This is something that has always confused me... Can someone clarify just what mm i am getting using a dedicated aps-c designed lens on a aps-c sensor please!
  2. DHOC_TAZH_NJ
    Hello, I'm curious to know if these two lenses can be effectively used in FF bodies without invoking crop mode. For instance, in my Pentax APS-C setup, I can use my 35mm and 50mm lenses in compatible FF bodies (film and DSLR). There is very slight vignetting, but I can get a full frame view out of them. Has anyone else tried these two lenses in FF mode?
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