8.29.2022

A few more samples from the Sigma fp before moving on to something else....


All of the color images were done with the Sigma fp and the Panasonic 50mm f1.8 L mount lens.







 

6 comments:

Eric said...

What!! A Jane Fonda head sweatband!!! ..... I gotta sit down

EdPledger said...

Love the FP sensor, esp the rendition of reds, hate the camera body. My quirky camera is the NEX5n, also fitted with gangly focus magnifier because of the absence of an EVF. I don’t see Jane Fonda, but I do see details that are remarkable.

JC said...

One thing that I would like to hear from an expert is a good, sober opinion on the differences between using a B&W camera and converting photos from color. Is there a meaningful difference in the final product that would be readily noticeable by somebody doing a close, but non-expert evaluation of a print?

Eric Rose said...

Ohhhh, I made a booboo! I was looking at the image of Kirk on a cellphone. Now on computer I see no Jane Fonda sweatband. Bad Eric! BAD!!

The files from the FP are just stunning. I might have to talk to my accountant/wife and pitch a convincing business case for getting one. Or I could just buy it and not tell her. But that's not how we operate ;)

Eric

Kirk, Photographer/Writer said...

JC, I'm no expert but here's what I've read when researching the idea of buying a Leica Q2 Monochrom.

Each layer of the color bayer filter over the sensor in a color camera absorbs light. Removing the filter adds back about 2 stops of sensitivity to the sensor compared to the same sensor with filters.

The final color of an image is made from by a process which interpolates and approximates the colors based on software in the camera. It is calculated on the fly and can have many errors but most are not "acutely" visible. The absence of filters on a sensor dodges that issue of incorrect computations of the color interpolation. It would also allow the processor to create files with a more binary and not a more complex, programming discretionary process. Again, more fidelity to the original tonal structure.

Since a Bayer filtered sensor needs to dedicate sensels to specific colors it actually resolves 1/4 the amount of data that the same sensor would resolve if unfiltered so, if the lens is up to the task, the monochrom sensor has the potential of resolving four times the image data. Which would translate into making images that are theoretically 4x accurate.

One can use various color filters (red, green, orange, yellow) to change the panchromatic response of the sensor at the time of exposure as opposed to the process of mixing channels in post.

Having said all of this I think only a dedicated practitioner would be able to see some of the imputed differences in the monochrom images versus a carefully made post processed version from a color camera.

Kirk, Photographer/Writer said...

Here's what the "experts" at DPR have to say about the differences:

https://www.dpreview.com/articles/2062427975/why-leica-s-m10-monochrom-is-more-than-just-a-gimmick

I may be off about the "two stop" difference but .... I may be right....

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