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  • Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)

No crop factor or small crop factor Lens list

D Fuller said:
This discussion continues to prove my point. The strongest advocates for the term exhibit the most confusion about the subject it refers to.
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Agreed, I personally never use the term since it is usually better to use more specific and less loaded descriptions when speaking about imaging format comparisons. It is usually a concept used in consumer or pro-sumer products among a growing group of users that does not have a grasp on its actual meaning or practical use and so it's use becomes less and less practical.
 
Jeff Kilgroe said:
Really? You don't see the inconsistencies? You know how Canon, Nikon and Sony first started making DSLRs with smaller sensors because the technology wasn't good enough to make the full FF35 frame size. This caught on, so they moved to making lenses that were a bit more compact and offered smaller coverage circles in some instances. They market these lenses off and on as "crop lenses". Thankfully it's a term they have now moved away from in the past year or two -- so, inconsistency #1. Next, they still referred to several lens offerings as being "crop lenses" based on which family they were in, regardless of what their actual coverage was. Most all APS-C/DX format lenses at 50mm focal length and longer will cover FF35 just fine. Why call it a "crop lens"?
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It's might be a cheaper version that can't be used on a FF35, but no inconsistency in terms of that the lens is. Whether it's "crop lens" or not, 50mm is 50mm is 50mm. Crop factor is not determined by the lens but the sensor.
 
I interpret Madjid's question to ask "what inexpensive lenses cover 4K with little or no vignetting?' Of course all of the lenses designed for full frame 35mm still cameras will more than fully cover the Red M-X sensor, I think the question was directed toward APS-x or S35 designed lenses. Does anyone know of such a list for Red 5K format??
 
Vance Colvig said:
I interpret Madjid's question to ask "what inexpensive lenses cover 4K with little or no vignetting?' Of course all of the lenses designed for full frame 35mm still cameras will more than fully cover the Red M-X sensor, I think the question was directed toward APS-x or S35 designed lenses. Does anyone know of such a list for Red 5K format??
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Just about every APS-c lens (Nikon DX, Canon EF-S, etc.) will cover 4K with little-to-no vignetting. 5K is a different story, with many wide-angle lenses, or wide ends of zooms having a smaller image circle than 5K requires. By the time you get to 35mm, most all will cover 5K, but I know of no list of still lenses that have been tested for this application.

For Cine lenses, Dino's sticky in the Epic forum tries to cover that information for 5K.
 
What I'm actually most interested in is finding cheap but reasonable lenses for Scarlet's 3K (HDRx) and 2K (slwomo) modes. The Voigtlander 25mm f/0.95, for example, seems like a great fit if you want to maintain shallow DOF while shooting in these cropped/smaller-sensor modes.

But I'm not sure whether there is a way to mount MFT lenses on the Scarlet, or whether the Voigtlander has been confirmed 100% to not vignette at 3K.

Sorry, don't want to derail the conversation but I think it would be nice to have a master list of lenses and whether they have been confirmed to work on 5K, 4K, 3K, 2K, and (what the heck) 1K. I know some folks are curious to try S16 lenses as well etc.

Jonas
 
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