Luis Fonseca

Lives in Portugal Lisboa, Portugal
Joined on Dec 11, 2006

Luis Fonseca's recent activity

  • Well, the Canon EF-S lenses are not compatible with EF (like the 5Ds R) cameras so it is natural that when shooting croped images with EF lenses the camera saves the full frame raw as one might ...
  • True, you get smaller files. Nope, a 500mm lens is a 500mm lens. The image projected on the focus points is the same. Nope. You just get a lot of focus points outside the image.
  • It's always better to crop in post. The crop in camera uses the center part. In post you can do exactly that or choose a different crop with a different composition.
  • The frankenstein R200 Can anyone tell me why this would be impossible? I've seen stranger cameras like the Sony a5100. Sony a5100 "Just" put a larger hole in the front and convert the existing M ...
  • I was talking about mount size affecting camera size. It is obvious that a FF lens is (almost always - the Pentax DA 40 XS covers FF) larger than a APS-C lens. If you put a aps-c sensor on a sigma ...
  • We can see that size is not a reason to have a small mount and small sensor. The Sigma fp (full frame) is smaller than Canon EOS M6 Mark II and just 14g heavier. https://camerasize.com/compare/#825,829
  • On page 7 they say "Accommodation of existing (and new) EF lenses — with virtually no performance compromises"

    So if the lens is optimized do EF mount you will get "virtually no performance...

  • Replied in New R6 specs
    Well, 2012 was a long time ago. Although I have a RP I still think that with IBIS, dual card slots, better high ISO, better DR, more native lenses, better battery, faster shutter, faster flash ...
  • Replied in New R6 specs
    True. I bought the RP instead of the A7III because of the RF 24-105 f/4, lower weight and lower price which feets my travel camera needs. But then I already had a Pentax K-1 with an amazing 36 mp ...
  • Replied in New R6 specs
    The difference might be immaterial but for someone starting they have to consider the upcomming Canon R6 against the Sony A7III (with a lot more native lenses and probably the best value for money ...
  • No he can't. At least not with Lensrentals since they don't ship to Europe.
  • I'm a bit late to the game but let me add that a RF 24-70 f/2.8 costs as much as a RF 24-105 f/4 and a Tamron 24-70 f/2.8 G2 together. The Canon might be a little better than the Tamron (that ...
  • 5 stops is using handheld a 200mm lens at 1/8 second. This is what my Pentax K-1 claims. 6 stops is using handhled a 50mm lens at 1 second. This would be amazing. 9 stops is using handheld a 500m ...
  • Wait, wait, wait! Badgers can take photos? Why noone told me this before? :-)
  • The Pentax FA 50 f/1.4 only has f/8, f/16 and f/22 markings.
  • This is the old Pentax value for money myth. No longer truth today. My refurbished K-1 with DFA 28-105 f3.5-5.6 was around 2000 euro. My brand new Canon RP with RF 24-105 f/4 L was around 1650 euro.
  • I must be a night waIker then. The K-1 and K-5 are amazing. The K10D was my first DSLR. But my first SLR was a Minolta (when I knew nothing about photography) and now also have a Sony Nex-3n (so ...
  • I would expect it to be f/2.8 considering it's more or less the same size as the Canon EF 20mm f/2.8 USM. But I'll tell you for sure after I buy one since it just went to top of my to buy list. Reg ...
  • I think it's the other way around. The camera needs an update to know the best adjustments for the "new" lens. I don't think Canon lenses need firmware updates (I might be wrong though). Sigma and ...
  • I doubt that the difference between 240mm and 300mm justifies the extra weight on the bag. Here is a focal lenght simulator: https://imaging.nikon.com/lineup/lens/simulator/ Or this app: https://sn ...
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Last upload Jan 16, 2012