Crop Factor, Low Light and Aperture with m4/3 lenses? Part 2

Started 5 months ago | Discussions thread
Sergey_Green
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In reply to Anders W, 5 months ago

Anders W wrote:

They were essentially the same res so that differences in this regard wouldn't complicate things. The poll was about signal-noise performance in the highlights and midtones (SNR 18%) versus signal-noise performance in the darker tones (DR). The latter was perceived as the more important factor by the large majority. Here's the poll report:

http://www.dpreview.com/forums/post/53675940

Just last week there was a thread about ND Grads vs Bracketing where most responder consistently (and persistantly) agreed they would not use filters for landscapes, but would prefer bracketing instead. Yet noone could post images (on that very same thread) as nearly as good as the poster who prefers to use filters almost exclusively,

http://www.dpreview.com/forums/post/53827411

Most on this forum will insist they will stop the lens down to infinity when photographing macro (because it is an inherent advantage of the cropped formats), even the closeup and macro "specialist" himself once almost "taught" this,

http://www.dpreview.com/forums/post/52920712

Yet it is rather common not to stop the lens down past f/11 (f/5.6 on mFT) for most pleasing closeups compositions, and this has been demonstrated enough times on the forum as well.

The efficiency of the sensor is claimed to be present across the entire range

http://www.dpreview.com/forums/post/53862930

Yet we know at the most common level of (the perceived by us) light it is usually not there (SNR18%). Several people observed and pointed to it on the poll thread as well. Here was my post,

http://www.dpreview.com/forums/post/53659634

A shows to be less noisy in the dark areas, whereas B pulls slightly ahead in the mid-tones. At the computer display size image B looks more present to me (just by clicking back and forward), whereas A looks partially washed, and partially darker. Could be just a time of a day that made slight difference, I would not tell.

In essence it made no difference for any practical purposes whatsoever, yet someone who can not hold his camera straight knows all about it and how it's all supposed to mean something at the end. I mean, asking for dillydally entertainment, what other joys (other than going out and enjoying the day) would someone with the camera have. (Think twice before you think you know the answer).

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- sergey

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