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agrumpyoldsod
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Re: Hasselblad XCD 28P lens


More Hasselblad XCD 4,0/28P test shots taken on an X2D

A "fuller set" of test shots of a test target 520mm / ~20" from the sensor with the XCD 4/28P from at various apertures f/4 to f/32 both "from camera" (the 3FR was simply taken into LRC tweaked see below and exported) and also with two other processing treatments.

https://flic.kr/s/aHBqjAVQMo

Note - JPG & RAW are effectively from camera and then 2 processed versions: one fully processed in LRC (with HC 4/28 lens corrections) with RAW conversion using DxO PureRaw 3; AND also JPG from Phocus with same WB adjustment and tiny keystone correction (see notes below).

All have tiny white balance and exposure correction to land the 20% gray patch to be ~R 80:G 80:B 80 (give or take) and tiny auto transform/keystone corrections applied to address tiny miss alignment by me.

In the fully processed version - since neither DxO Pure Raw 3 nor Adobe CR/LCR have lens correction data for this lens yet I utilised the profile for the HC 4,0/28mm and then played with vignetting settings to match brightness

Phocus 3.7.5 for mac - does not support the XCD 4/28P (does not have a profile for the XCD 4/28P) yet but I chose to let Phocus apply adaptive lens corrections, which did address minor barrel distortion then after WB/Exposure/keystone tweaks simply exported medium JPG.

The in-camera JPG shot at f/4, which shows colour/brightness values of R 68.4, G 68.1, B 71.3 near the bottom right corner - whereas as noted the 20% gray tab is almost 80 RGB across the board. This indicates a wee bit of a blue shift towards the corners in the vignetting, which as can be seen is fairly easily fixed. No obvious magenta - where the R values would also vary.

I like other hope that lens profiles are added for this lens to Phocus, ACR/LCR and most importantly for me DxO Pure Raw 3.



Sep 24, 2023 at 03:31 PM





  Previous versions of agrumpyoldsod's message #16350191 « Hasselblad XCD 28P lens »