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Opinion of D FA 28-105 v D FA 24-70

RobL
Posted 04/11/2022 - 11:09 Link
Faced with a similar dilemma of weight versus quality I bought an M4/3 body and a couple of lenses in sales, for a truly lightweight walkabout solution. This leaves me with the K1 plus the f2.8 zoom series, the 150-450 and a couple of others for when I need higher resolution or to be more creative and when the weight isn't an issue.
Flan
Posted 04/11/2022 - 19:33 Link
My limited experience of the Pentax DFA 28mm to 105mm
An excellent lens but it does require good lighting conditions to show it at its best and it is excellent for that purpose, or else a tripod is needed, yes you can bump up iso on the K1ii pretty significantly but it won't render as nice on the K1ii as some other lenses with similar high iso (probably user error on my behalf) .
I would consider it an excellent daytime lens in bright conditions and it is a match for all and betters most in that category
A great travel companion because of the lightness and range but difficult in low light conditions as in the heavy overcast northern hemisphere, wet, damp, drizzle, lowlight winters.
A summer lens is where it shines unless you bring a tripod.
Loads will disagree my thoughts but
Pwynnej
Posted 04/11/2022 - 21:51 Link
Pwynnej wrote:
If the 28-105 was an F4 lens then I would've been tempted - I have the Nikkor 24-120/4 and 24-70/2.8 (non-VR) but there is less of a size diffference between them and find myself using the 24-70 more. I waited for the f4 24-120 because of the faster aperture and that the older 3.5-5.6 was regarded as being a very poor lens.

Having got the D850 and spent approx £100 on Reikan focal discovered the better all-round lens is the 24-120. Strangely the 24-70 suits D810 but not D850 and the other thing is that some lenses need considerable adjustment and others are spot-on. Not such doubts about my D-FA/D-FA* on the K-1......the 82mm filter thread has caused some extra expense though...
Z-1p, K-1, P50
F50 1.7. SMC-FAs 24, 35, 50 1.4, 85, 135. HD-FA15-30, DFA24-70, D-FA*70-200. The SMC-FA Limited Trinity.
Metz 45 CL-4, AF500FTZ. AF540FGZ.
Some Mamiya and some Nikon, and a Canon T70.
PeterKR
Posted 05/11/2022 - 22:09 Link
Daronl wrote:
LennyBloke wrote:
I'm interested to know the opinions of those of you who have owned both these lenses, particularly from the point of view of using as a "walkaround" or general use lens with a K1. Do you fell that the 24-70 is significantly better optically? How does the 28-105 perform wide open? Any other aspects that make one or the other a much better choice?

Thanks in advance

Daronl wrote:
Quote:
I'm interested to know the opinions of those of you who have owned both these lenses, particularly from the point of view of using as a "walkaround" or general use lens with a K1. Do you fell that the 24-70 is significantly better optically? How does the 28-105 perform wide open? Any other aspects that make one or the other a much better choice?

Thanks in advance


The 28-105 is a nice lens and in the optimum aperture range stands up against the 24-70 but the 24-70 is optically superb through the aperture range, Wide open it is superb and with a F2.8 is bright and clean.

In low light particularly indoors the 28-105 can be challenged optically and to use; I did a large event shoot over two days and found the 24-70 to be easy bright and pretty faultless.

But the difference in price doesn’t indicate a similar difference in IQ.

Without being unnecessarily pretentious;
In a nutshell the 28-105 is a very good lens but the 24-70 is a very good pro-lens that never seems to struggle and a joy to use

I'll second all that.
Last year I bought the 28-105 to go with my K1ii and took it on holiday.
I was so disappointed with the results that I thought there was something wrong with the camera and took it back to SRS. They sent it for a check up and it was given a clean bill of health so my problems must have been due to 1) my bad settings or 2) the lens.
Some of the shots were fine but it struggled in poor light and in close focus situations.
Earlier this year I got the 24-70 in the SRS Spring sale and took it on holiday this year.
The results from THIS lens were amazing and a quantum leap above those from the 28-105.
Against that it's a heavy beast so I find that for 'carry around I stick with my K70 + DA18-135 !

Hope this helps ?
Peter
Pwynnej
Posted 16/11/2022 - 16:39 Link
I used my D-FA f2.8 trinity in Venice last week, I used the 24-70 msotly but the 15-30 and 70-200 got plenty of use as well.

The 24-70 really outperforms the Nikon (non-VR) equivalent and given what I said about the 24-120 v 24-70 the D-FA 28-105 has to be very good if it is to displace my f2.8 lens...

(oh and I took 2 limiteds with me )
Z-1p, K-1, P50
F50 1.7. SMC-FAs 24, 35, 50 1.4, 85, 135. HD-FA15-30, DFA24-70, D-FA*70-200. The SMC-FA Limited Trinity.
Metz 45 CL-4, AF500FTZ. AF540FGZ.
Some Mamiya and some Nikon, and a Canon T70.

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