vieri Offline Upload & Sell: Off
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JimFox wrote:
Hi Vieri,
It looks like you put a lot of time and effort in to writing up this comparison. Overall it's a nice write up. Two thoughts.
1st, to Ben's point, when you are doing the side by side comparisons, the exposures should stay the same between each shot. Vary the aperture for the test, but the shutter speed should change so that all of the shots look the same exposure wise.
Then 2nd, since the point of this seems to be so a person could decide to choose between the two lenses, when you are doing the side by side comparison shots, it's always most helpful to me when the reviewer posts the images from each test piece next to each other. For example, I see where you posted 4 shots at various fstops from the f4 lens, and then below it the 5 shots from the f2.8 lens. As a reader, the shots are too far apart for me to say that f4 on the f4 lens is not as sharp as the f4 on the f2.8 lens because they are not right next to each other. All I can do is compare the one lens to itself... I hope that makes sense.
I guess I have a 3rd suggestion. In some of the comparison shots, the shots for the f4 lens are large, but then for the f2.8 lens, the shots are small... consistency between comparison shots in terms of size would be a nice touch too.
I am not meaning to be too picky, you obviously spent a lot of time with the review, and that's appreciated. I am just adding a few thoughts to take the reviews presentation to the next level.
Jim...Show more →
Hi Jim,
thank you very much for your detailed reply, I appreciate your time and help. Let me answer:
1. The exposure is actually the same between shots; if you look at the center samples, they are exactly the same. In the vignetting test, they don't look the same due to vignetting, and if you look at the corner samples they don't look the same for the same reason - vignetting. I think I didn't explain myself very well in my answer to Ben
2. Point well taken. Will see to it and add a side-by-side comparison.
3. Actually, the comparison images are exactly the same size on my computer; I just checked, and it seems that blogger - even if you click on them to expand - doesn't resize them to their full size. I know this isn't very practical, but you can right-click on them and download them to see them at full size. I added a link to download them in a zip for convenience.
The link is: http://www.madshutter.com/photos_zip/70_200_test_images.zip
Again, thank you very much for your help, I really appreciate it. All the best,
Vieri
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