nutraman

nutraman

Lives in United States United States
Joined on Apr 15, 2011

Comments

Total: 6, showing: 1 – 6
In reply to:

thk0: "There are three factors that affect how much light is available for your sensor to capture: your shutter speed, the size of your aperture (not f-number) and the size of your sensor."

Yes, f-number. If you use the physical aperture size, then the sensor size does not matter (assuming the same sensor coverage of the light circle). The amount of light passing through the lens, and hence "available for your sensor", only depends on the area of the entrance pupil, transmission efficiency and the duration of the exposure. If you use f-number, then the physical aperture scales with the sensor size and sensor size becomes part of the equation.

(edits for typos)

oh yeah, well I shoot without a lens. ;)

Direct link | Posted on Apr 27, 2015 at 18:47 UTC

thank you dxo. I appreciate this information. Not everyone uses MF so a score for autofocus would have also been appreciated as sharpness is useless without fast, accurate AF.

Direct link | Posted on Jul 23, 2013 at 16:03 UTC as 9th comment
On Olympus PEN Lite E-PL5 & PEN Mini E-PM2 preview (152 comments in total)

oh and can you include a shot in the 'JPEG Test' section with the NR OFF and WARM OFF? Thanks!

Direct link | Posted on Dec 13, 2012 at 04:16 UTC as 18th comment
On Olympus PEN Lite E-PL5 & PEN Mini E-PM2 preview (152 comments in total)

Mr Butler and dpreview crew, on the JPG image testing could you add 1 or 2 test shots with "warm color" off? I leave warm color OFF always on my epm1 and I think many people do too or many would be interested to see a test shot with warm off on the epm2 and epl5. Thanks much.

Direct link | Posted on Dec 7, 2012 at 16:19 UTC as 19th comment

dpreview editors - a very minor error on page 28, which states:

"As you can see above, instances of moiré in the D800E are also present - to an admittedly lesser degree - in the D800."

the cameras should be switched:
As you can see above, instances of moiré in the D800 are also present - to an admittedly lesser degree - in the D800E.

Direct link | Posted on Jun 12, 2012 at 14:14 UTC as 19th comment | 2 replies

i'm guessing these lenses could be compatible (and focus quickly) with canon's new PDAF mirrorless system - either directly or through an adapter. they were released beforehand to give the mirrorless system more 'punch' and show canons user base some level and interoperability between systems.

...just a guess.

Direct link | Posted on Jun 8, 2012 at 15:54 UTC as 76th comment
Total: 6, showing: 1 – 6