Hi
>>http://home.people.net.au/~cjeastwd/lensTesting/ >> >>which did bother me > >OK, now I downloaded your pictures and had a look at them. Turns out >the exposures aren't actually different, but the colour balance is. >If you check equivalent spots on the two pictures, you'll find that >the values are almost identical. interesting, I had initially been using the EOS viewer, but after you mentioned it, I picked a white section under a window visible in both images (on the bototm floor of the building), opened in photo shop, zoomed to 100%, selected the areas, set histogram to All Channels View and sure enough clicking between the two images I see the relative position of red and blue shift (green remains same location) intersting catch for the young player there! Even though I had set f11 1/200th in manual mode for both shots, I forgot to change the white balance from Auto ... thankyou for spotting that! its so nice that someone out there can take the time to help!! >You'll be able to check this out more accurately if you lock down the >colour balance. no longer, as I've sold the 20D, the TS-E 24 and the TS-E 90. This prompted the sale, but by no means was the main reason. I have been using 4x5 sheet film with a 90mm for a few years now, and had been hanging onto the TS-E lenses in the hope that full frame would become a justifiable expence for me. maybe in the future I'll consider getting them again. >For your other tests you should also manually set a WB, otherwise >exposure differences easily get masked by varying perceptual >differences based on colour preferences. > As I recall the preset WB setting in the 20D was wretchedly difficult compared to my Nikons. Normally I use RAW, and set the same temp in conversion, or in JPG use some predefined WB, but this time I had been slopy. It occurs to me that I should review my other lens testing results. thanks again for pointing this out to me as the colour balance was so close as to not trigger my noticing of it! * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
