Colors from Sigma Foveon (SD14 n SD Quattro) and Fujifilm X-Trans sensors
本帖最後由 wk7leung 於 2017-4-7 00:55 編輯The cameras used are Sigma SD14 and Fujifilm X-E1. The lens is an f2.8 manual 85mm Rollei except for 2a as specified. The artificial light is from Godox V850.
Personally, in favor of the colors from the Foveon sensor.
1 Fujifilm X-E1
1a.
https://c1.staticflickr.com/4/3673/33711433526_8091bb9271_b.jpgDSCF9111-1ZSPMax+31032017 by wksevenleung, on Flickr
1b
https://c1.staticflickr.com/3/2824/32940794843_7f55951628_b.jpgDSCF9177-2ZS PMax_31032017 by wksevenleung, on Flickr
2 Sigma SD14
2aCoupled with an f2.8 AFD105mm Micro Nikkor
https://c1.staticflickr.com/3/2861/32927959943_dbfb3dca3f_b.jpgSDIM3656-0ZS PMax_30032017 by wksevenleung, on Flickr
2b
https://c1.staticflickr.com/3/2905/33370730250_25836aae01_b.jpgSDIM3678-3ZS PMax_31032017 by wksevenleung, on Flickr
i also like the color of foveon better. Are they out of the box jpegs? Jason 發表於 2017-3-31 22:09
i also like the color of foveon better. Are they out of the box jpegs?
No, they weren't.
I think, for XTran, Jpeg is still OK. For Foveon, RAW files are safer for finer contrast n exposure adjustment n color renditioning. Foveon is a good match with Zeiss glass. Forgive me for saying this, but don't you think these macros look unusually flat? Seems Foveon is better from the images above.
Are the light direct straight to the front of the flowers? 本帖最後由 wk7leung 於 2017-4-1 10:08 編輯
vincecharus 發表於 2017-3-31 23:58
Forgive me for saying this, but don't you think these macros look unusually flat?
In my understanding, being flat refers to two things:
1. an even or a levelled smooth surface; and
2. shallow depth among the objects in a plane.
In those senses, the perspective in the shots is the case and is the result of:
1. positioning the plane of the camera to being perpendicular to the plane of the petals;
2. retaining, as far as possible, the sharpness of the petals through stacking a series of focused petal shots by using a software called Xerene Stacker, thus reducing the elevation among the petals.
3. The 85mm lens becoming a 135mm as a result of the cropping factor, the perspective so obtained becoming flat naturally provided that the camera is positioned suitably.
The aperture is around f2.8 to 4. The depth of field is pretty shallow. Bokeh is thus ensured.
The purpose of stacking is to ensure that the sharpness of a relatively large area of the flower is retained and yet a shallow bokeh can be achieved.
Light is artificial, applied laterally and from behind.
A shot of a peel-off orchid.
Taken with Sigma SD14 and f2.8 AFD105mm Micro Nikkor.
3
https://c1.staticflickr.com/3/2932/33701815922_500d9c035d_b.jpgSDIM3751-5_ZS PMax_05042017 by wksevenleung, on Flickr 本帖最後由 wk7leung 於 2017-4-7 08:09 編輯
The shots in #4 below were taken with Sigma's SD Quattro and Nikon's f2.8 AFD Micro 105mm.
#4a This was converted from RAW to doubly-sized Tiff for stacking before converting to a Jpeg file
https://c1.staticflickr.com/3/2861/33835898366_13f5d6613b_b.jpgSDIM0029-4_Double-sized_ZS PMax_06042017 by wksevenleung, on Flickr
#4bThis was converted from RAW to Tiff of the original file size before converting to a Jpeg file
https://c1.staticflickr.com/3/2948/33877567115_0496d05e95_b.jpgSDIM0029_4_Full-sized_ZS PMax_06042017 by wksevenleung, on Flickr Shots taken with SD Quattro and f4 200mm Rollei
5
https://c1.staticflickr.com/3/2928/33505715950_7ecd0e5121_b.jpgSDQ_0116a_07042017 by wksevenleung, on Flickr
6
https://c1.staticflickr.com/3/2896/33890544595_746ae5d6de_b.jpgSDQ_0095a_07042017 by wksevenleung, on Flickr
7
https://c1.staticflickr.com/4/3684/33505720000_5e6275a7e4_b.jpgSDQ_0072a_07042017 by wksevenleung, on Flickr
8
https://c1.staticflickr.com/4/3684/33733990142_a9eb2da161_b.jpgSDQ_0053a_07042017 by wksevenleung, on Flickr SD Q plus f4 200mm Rollei
9
https://c1.staticflickr.com/3/2922/33115623093_41a37808a3_b.jpgSDQ_0175a_09042017 by wksevenleung, on Flickr
10
https://c1.staticflickr.com/3/2889/33115625223_2b42b901ed_b.jpgSDQ_0124a_08042017 by wksevenleung, on Flickr
11
https://c1.staticflickr.com/3/2950/33115624333_a6a2ede034_b.jpgSDQ_0134a_09042017 by wksevenleung, on Flickr
12
https://c1.staticflickr.com/4/3940/33543465460_69f7dcd346_b.jpgSDQ_0182a_09042017 by wksevenleung, on Flickr
本帖最後由 wk7leung 於 2017-4-10 22:43 編輯
From SD Q ... with RAW files converted to Tiff using Sigma's software and retouched with PhotoShop subsequently. wk7leung 發表於 2017-4-10 22:42
From SD Q ... with RAW files converted to Tiff using Sigma's software and retouched with PhotoShop s ...
Thought you could shoot DNG ... check this link
https://www.dpreview.com/opinion/9977248883/sigma-shoots-dng-raw WK 師兄,
你的 Nikon, Rollei 鏡是如何接到 Sigma 機身的呢, 要拆機嗎?
以前睇過D介紹 (你寫的?), 是拆去SIGMA mount 才能改裝新 mount, 而且只有 M42 及Canon 鏡的.是嗎?請指教!! 本帖最後由 wk7leung 於 2017-4-15 21:38 編輯
wolfmkc 發表於 2017-4-13 20:46
WK 師兄,
你的 Nikon, Rollei 鏡是如何接到 Sigma 機身的呢, 要拆機嗎?
I am using a Nikon-to-SA mount and an M42-to-SA mount for mounting my non-Sigma lenses to the SA bodies.
Some people convert the Sigma SA mount to the Canon one to revitalize their Canon-mount lenses. I have no Canon-mount lenses with me. I have no comments but if I did have, I would not do that because all the SA mount functionalities will be lost.
As a matter of fact, Sigma lenses are pretty good lenses as well. Using them, you can obtain images that are sparkling in ensemble as the algorithm in the Sigma bodies are meticulously tailored for the SA lenses.
You can mount, for example, Rollei, C/Y, Nikon, Leica and M42 lenses on Sigma bodies but the thing is at present, only the M42 adapters are available; you can get the M42 mount from forum members in DCfever.
In the past, there were a Japanese and a British, who made SA-compatibile adapters for the Nikon and M42 lenses. They are no longing providing such a service. A pity. Anyway, if SD Q and HQ can sell well, maybe they will take the oppotunoty to earn some easy and fast money.
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