28-70mm F2.8L Disappointment

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Archive 2009 · 28-70mm F2.8L Disappointment

Krosavcheg
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p.2 #1 · 28-70mm F2.8L Disappointment

I noticed before, however today it really got to me (slow, eh?) that my AF seems to be a little out of order. Using 50mm f1.4 I tried to focus on a line and several times focus reajusted after confirmation. I am not 100% sure, but I believe I seen this on my 350D also.
This surely could have affected the test. Going to the shop today to do another test.

Jun 29, 2009 at 01:23 AM

chuborama
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p.2 #2 · 28-70mm F2.8L Disappointment

My 28-70 backfocuses about 0.5 cm (~1/4 inch) consistantly at close to the minimum focusing distance and 70mm. You might try to see if this is the problem you were encountering. Even at 5.6, if the lens backfocused, there are times when it wouldn't be quite enough DOF to maintain clear sharpness throughout.

My copy is really sharp otherwise. I've cranked out winner after winner with the damn bugger, at a more than fair price (US 650). I am far too lazy and cheap to send it in for calibration, but I suppose I aught to one of these days. When I get my 5D II...Right now on my 30D the focal length leaves me consistantly reaching for my 20-35L instead.

Jun 29, 2009 at 02:06 AM

WmPat
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p.2 #3 · 28-70mm F2.8L Disappointment

PetKal wrote:
My 28-70L is a good lens.
My 24-70L is a better lens.......a bit sharper for one.

One really has to shoot those two lenses side-to-side in order to be able to compare more reliably.

Obviously, I can not say how representative my 28-70L is of the whole population of that model. All I can say is that I bought the lens in a true LN condition and the focus calibration is right on the money.

+1

Jun 29, 2009 at 03:37 AM

PetKal
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p.2 #4 · 28-70mm F2.8L Disappointment

Here are three examples of things I shoot with the 28-70L. All around a dependable nice walk around lens. Obviously, 24mm is more useful than 28mm...........I miss those 4mm when I am using the lens.

Edited on Nov 16, 2009 at 09:20 PM · View previous versions

Jun 30, 2009 at 02:46 PM

PetKal
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p.2 #5 · 28-70mm F2.8L Disappointment

Overall IQ and colours very good. Bokeh good, but not quite on the 24-70L level.
Three more samples.

Edited on Nov 16, 2009 at 09:20 PM · View previous versions

Jun 30, 2009 at 03:09 PM

Krosavcheg
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p.2 #6 · 28-70mm F2.8L Disappointment

PetKal: The shots look great. As opposed to you, I find myself needing extra focal length when shooting 16-35mm...

I suppose one is never content with what one has got..hehe

I seriously need to stop reading reviews here. 28-70mm seems to be most popular lense.
The-digital-picture seem to agree on the 24-70 and 28-70 comparison.

Jul 06, 2009 at 01:15 AM

PetKal
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p.2 #7 · 28-70mm F2.8L Disappointment

Krosavcheg, photography forum folks often tend to over-compartmentalize the application of diverse gear types and models. As one does increasing amount of practical photography with various gear types, one learns that different equipment models are often of marginal impact on results. Yes, theoretically, the 24-70L might be a bit better all around lens than the 28-70L, yet in practice those differences are negligible when compared to our own shot visualizing and execution skill.
Furthermore, if all I have on me is 16-35L, I will apply myself to work best within the limitations and strengths of that particular lens.
Here is one more 28-70L shot which I like.

Edited on Nov 17, 2009 at 02:03 AM · View previous versions

Jul 06, 2009 at 03:28 AM

Glen_C
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p.2 #8 · 28-70mm F2.8L Disappointment

fwiw the PQ like PetKal is posting (even pixel peeping larger images) is what i expect & see with the 28-70L. if $$$ was no object i would upgrade to the 24-70L to get the extra 4mm on the wide end.

Jul 06, 2009 at 03:38 AM


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