[Guest]

[quote name='mst' timestamp='1290154600' post='4260']

Strange. I just did the first vignetting measurements with the D7000, including the 70-300 VC. The lens clearly shifts towards overexposure, especially stopped down at the short end.[/quote]



What´s your take on the D7000? Is it that soft as some say?

[mst]

[quote name='Sammy' timestamp='1290162065' post='4262']

What´s your take on the D7000? Is it that soft as some say?

[/quote]



It's honestly too early to tell. The RAW converters I'm used to don't support the D7000, yet. So while I'm out shooting with it regularly (already collecting sample images) I haven't had the chance, yet, to look at the images in the environment I'm familiar with.



-- Markus

[mannypr]

[quote name='mst' timestamp='1290167393' post='4263']

It's honestly too early to tell. The RAW converters I'm used to don't support the D7000, yet. So while I'm out shooting with it regularly (already collecting sample images) I haven't had the chance, yet, to look at the images in the environment I'm familiar with.



-- Markus

[/quote]

Over at the Dpreview forum there seems to be forming a consensus form those who have both, the d90 and the D7000 and are in the position two compare both that the photos coming from the D90 are superior.I personally have not form any opinion one way or the other. Just waiting for the more critical reviews come out from Imaging Resource , Dpreview and Photozone. On another note , I've seen photos from the D7000 that are very sharp and some not so sharp. Just one question. Does the increase in megapixels make more demands on the optics ? Maybe that is what many are seeing as soft photos . Maybe the increase in megapixels places demands not only on the optics but on the user also to refine their shooting technique.

[mst]

[quote name='manny' timestamp='1290187828' post='4269']

Does the increase in megapixels make more demands on the optics ? Maybe that is what many are seeing as soft photos . Maybe the increase in megapixels places demands not only on the optics but on the user also to refine their shooting technique.

[/quote]



Yes, it does, definitely.



Of course, one should always keep in mind the maximum viewing size ... and if the increased resolution (or lack of sharpness at pixel level) really matters in the end. In some sort, this also places demand on the user <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/wink.gif' class='bbc_emoticon' alt='' />



-- Markus

[grahamnp]

My copy of the 70-300 does not seem to have the seem issues. Exposure is about 0.3 EV brighter than my 18-135 but the variance is consistent and the exposure chosen by the camera is exactly the same as on my AF-S 60. I suspect that it is the 18-135 that is underexposing and not the Tamron or the macro. I tested at 70mm against the 18-135, don't have any other lenses that cover 70mm. I have the F-mount version.



I got it only a few days ago but I suspect that stock would have been old, if that helps. Can't be too sure though.

[lugui]

Hi,



As a newbie, I am taunting between Nikon 70-300 VR and this Tamron 70-300 VC. My question is what particular can Tamron do in order to solve this problem for F Mount ? Should I rather wait or just go for the route of Nikon.



Lugui

[woodsfortysix]

I just purchased the Tamron 70-300 VC yesterday and did some test shots today to compare to my Nikon 70-300 VR. I did both tripod mount and handheld. Aperture mode on a D7000, from f5.6 - f8 at 300mm. Under every condition, the Tamron was visibly sharper. However, it was also underexposed by about one stop compared to the Nikon.



I know this is just the opposite of what others are reporting on this forum. When I originally tried the Tamron vs the Nikon at the camera store on a D7000, I got the same result - the Tamron was underexposed (this was not my D7000, my Nikon 70-300, or the copy of the lens that I purchased).



I then ran a second test in shutter mode. The exposures were very close, but the autoexposure aperture that was selected by the D7000 was one stop different. Tamron reads f8.0, Nikon reads f5.6 The images were both properly exposed.

[woodsfortysix]

I also just ran the same series of tests with my D700 and added the Nikon 28-300 lens. The exposure results for the Tamron were identical with the D700. The 28-300 exposure results were close to the Nikon 70-300VR at 70 and 300.



I know this is not a very scientific test, but it appears that my Tamron is underexposing in aperture mode, but exposes correctly in shutter mode if there is "headroom" to adjust the aperture.



Appears that if I shoot in shutter mode, I will be okay...



Comments / suggestions...



Thanks,

[vincent_photo]

Hey guys, new here :]



I recently bought this lens (today in fact LoL), and mucked around in the Aviary in the Local park. This was my first telephoto zoom and decided on this very lens due to the sharpness owners of the lens have noted.



I honestly dont regret paying 3880 HKD for the lens, IMO its a great lens for its price (mind you my only other lens is a 18-105 and a 18-55[only recently got the 18-105]. The VC is truely a miracle the image just freezes as you half press the shutter release, though sometimes when you're focused on an object the VC causes "Digital-like-movement"/Jerky. One tiny issue, the HSM or USD as they call it tends to be a bit slow (ie. when its on inf. to 1.5m), well slowER then nikons "AF-S"



btw how does one do the ""tests"? :S

[opiecat]

[quote name='woodsfortysix' timestamp='1290904258' post='4505']

I also just ran the same series of tests with my D700 and added the Nikon 28-300 lens. The exposure results for the Tamron were identical with the D700. The 28-300 exposure results were close to the Nikon 70-300VR at 70 and 300.



I know this is not a very scientific test, but it appears that my Tamron is underexposing in aperture mode, but exposes correctly in shutter mode if there is "headroom" to adjust the aperture.



Appears that if I shoot in shutter mode, I will be okay...



Comments / suggestions...



Thanks,

[/quote]



i have the same findings with my tamron 70-300 on my d7000. it seems to underexpose by about .5 to 1EV.

i compared the same scene from the same location using both 16-85 and 70-300 both at the 70mm setting.

the tamron would show a faster shutter speed (Av mode) than the 16-85 and would result in underexposure.



what i also noticed was that the camera's metering seems to be more sensitive to the tamron when pointing the camera to a different area of particular scene.



i'm going to try Tv mode.



has anyone talked to tamron about this yet?