80-200 d100 combo sharpness concern...
I posted this under lens and thought maybe it could be a camera concern, doubt it though....
Hi,I am using a d100 digital and have been using a 28-70 2.8 and getting very sharp pics, Now I picked up an 80-200 2.8 and have some concerns about focus and sharpness? It seems to lack the detail that the smaller lens does. I returned it to the dealer and swapped it for an I dentical which so far looks to be the same quality. I don't know if it is Focus or what? I will do some more testing (shooting) this weekend, Question is: Should this larger lens be as sharp as a smaller lens of same quality? Thanks all in advance for the help. Harry
#1. "RE: 80-200 d100 combo sharpness concern..." | In response to Reply # 0vfnewman Basic MemberFri 23-Aug-02 10:55 AM
First of all, what settings are you using for file type and sharpening? e.g. jpg, tiff, raw, and is the sharpening low, auto, etc?
I have an AF-S 80-200 that I use on my D1 and D100 (as well as plenty of film shots on my F5). I'm very happy with the sharpness.
I'm sure there's a good answer.
#2. "RE: 80-200 d100 combo sharpness concern..." | In response to Reply # 1glasseye Registered since 12th Jul 2002Fri 23-Aug-02 12:19 PM
Thanks Victor, Im using the normal settings on camera,shooting jpeg large,normal sharp, being careful to keep all settings consistent.Ex. I will shoot two identical pics on "A" setting same aperature, then load them in PS and enlarge to actual pixels..The 28-70 is focused exactly where it should,The 80-200 is not really focused on the subject? It is really not focused on anything, nothing is as sharp as the smaller lens in the point area.But when I set it up inside with a tripod and used flash and it looked very sharp and focused on a small item (microphone at 15ft/200mm) But outside it tends to look unfocused.Plenty of light available, I'll post some pics this weekend, it's hard to explain. Harry
#3. "RE: 80-200 d100 combo sharpness concern..." | In response to Reply # 2jrp Charter MemberFri 23-Aug-02 02:10 PM
The D100 has been reported as rendering the best images under NEF.
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#4. "RE: 80-200 d100 combo sharpness concern..." | In response to Reply # 2herbet Basic MemberFri 23-Aug-02 04:17 PM
The 80-200 is one sharp beast and works geat with the D100.
The blurrines could be camera shake. you need to consider the 1.5 multiplier of the D100 when selecting your shutter speeds. The shorter end of the zoom at 80mm will be equivalent to 120mm so you need to boost up the shutter speed to at least 1/125s. You can also try with a tripod. This lens is quite heavy and it's hard to keep it still and that shows much more on a telephoto zoom than with the 28-70.
Let us know how it goes.
#5. "RE: 80-200 d100 combo sharpness concern..." | In response to Reply # 4BJNicholls Charter MemberFri 23-Aug-02 06:40 PM
Actually, the multiplier doesn't require any faster shutter speed than the same focal length lens on a film body. The amount of image movement with handheld shaking is the same on the CCD as it is on film. The image area the lens normally covers is cropped, not magnified. The rule-of-thumb minimum reciprocal of 1/80 for 80mm should work just as well (or poorly) on film and digital.
That said, a fast enough shutter speed or tripod support would be one thing to do. The other is to realize the relatively shallow depth of field if the shooting is done at wider apertures. Try a few tripod supported shots at f/8 or so and see if the sharpness is still a problem. The 28-70 will be more forgiving of both shutter speed and depth of field. This isn't a digital vs. film body issue.
I thought about this longer I take back what I wrote above about the magnification factor. The image movement on the CCD is identical to the movement on film, but to make a print of a given size the smaller CCD image will have to be enlarged more. Therefore blurring due to lens movement will be enlarged at the back end of the process. So yes, a cropping DSLR would require a faster minimum shutter speed. This stuff gives me a headache sometimes.